Mason-Lite 84 Linear Gas Fireplace - 12 B-Vent

Best B-Vent Gas Fireplaces of 2025

What if you could cozy up to a roaring fire without the hassle of chopping wood or sweeping ash?

Enter the world of B-vent gas fireplaces — a modern twist on timeless warmth that’s as effortless as it is enchanting. Unlike traditional wood-burning hearths or high-maintenance vent-free models, B-vent fireplaces use a unique double-wall venting system to whisk away exhaust while pulling in fresh air, delivering reliable heat and a flickering glow with the flip of a switch.

What makes them stand out?

They strike the perfect balance between efficiency, safety, and that classic fireplace charm— no chimney sweep required.

In this guide, we’ll explore the best B-vent gas fireplaces on the market, breaking down their features, benefits, and why they might just be the glowing centerpiece your home deserves.

Our Criteria

  • Design: This evaluates the overall design, materials, finishes, and flame realism, as well as customization options like decorative elements.

  • Heating Performance: This assesses BTU output for effective heating, adjustable heat settings, and energy efficiency ratings.

  • Ease of Use and Installation: This considers the ease of control mechanisms, reliability of the ignition system, and flexibility in installation options.

  • Safety Features: This looks for safety certifications, built-in safety mechanisms like automatic shut-off, and design features for child and pet safety.

  • Cost and Efficiency: This analyzes initial purchase, installation, and operational costs, as well as fuel efficiency and overall value.

  • Warranty: This reviews the length and comprehensiveness of warranty coverage, quality of customer service, and availability of repair services.

#1 Malm Zircon

Malm Zircon 34" Matte Black Freestanding B-Vent Gas Fireplace

Pictured: Malm Zircon 34" Matte Black Freestanding B-Vent Gas Fireplace

The Malm Zircon Series combines modern aesthetics with high functionality, offering a stunning panoramic view of the flames while delivering reliable heating performance. Designed to operate without electricity, this fireplace ensures that your home stays warm even during power outages.

Constructed from durable 14- and 18-gauge steel, the Zircon features a sleek conical shape that enhances any contemporary or retro-styled space. It is available in multiple Malm colors, allowing homeowners to customize their décor while adding atmosphere, color, and beauty to any room. Additionally, this fireplace generates 45,000 to 49,000 BTUs of heat, perfect for rooms of all sizes.

This unit is compatible with B-vent systems and requires an 8" Gas "B"-Vent for proper operation. The millivolt pilot system ensures easy ignition with a Piezo igniter while the automatic thermal damper optimizes venting efficiency. The included ceramic fiber logs and glowing embers provide a realistic fire experience, while the lift-off screen allows for added safety and control.

The Malm Zircon is available in a 34" size and offers both natural gas and propane options. It also features a sleek powder-coated matte black finish on the top and base, with additional color finishes available for a customized look. Lastly, this unit is backed by a five-year limited warranty.

Sizes: 34" | Heat Output: 45,000 - 49,000 BTU | Fuel Type: Natural Gas or Propane | Venting Type: B-Vent | Warranty: 5 years

What We Like

Some Considerations

Check Icon Striking Modern Design: The sleek conical shape and panoramic flame view make the Malm Zircon a stylish centerpiece for contemporary and retro-styled spaces.

Check Icon High Heat Output: This fireplace provides between 45,000 and 49,000 BTUs of heat, making it an excellent choice for warming large rooms.

Check Icon Durable Construction: The unit is made from 14- and 18-gauge steel, which ensures long-lasting durability and resistance to wear.

Check Icon Reliable Operation: The Malm Zircon operates without electricity, so it continues to provide heat even during power outages.

Check Icon Customizable Finish Options: This fireplace is available in multiple Malm colors, allowing homeowners to match their décor and personal style.

Check Icon Efficient Venting System: The automatic thermal damper enhances venting efficiency by optimizing heat retention and minimizing heat loss.

Check Icon User-Friendly Ignition: The millivolt pilot system with a Piezo igniter ensures easy and quick startup.

Check Icon Realistic Fire Experience: The included ceramic fiber logs and glowing embers create the ambiance of a real wood fire.

Check Icon Safety Features: The lift-off screen provides added protection and control while allowing for an open-fire aesthetic when desired.

Check Icon Solid Warranty Coverage: The Malm Zircon is backed by a five-year limited warranty, offering peace of mind and long-term reliability.

Cross Icon Limited Sizing Options: The Malm Zircon is only available in a 34" model, which may not be suitable for smaller or uniquely shaped spaces.

Cross Icon B-Vent Requirement: This unit requires an 8" Gas "B"-Vent, which may add to installation complexity and cost compared to vent-free alternatives.

Cross Icon No Built-In Blower: Unlike some gas fireplaces, this unit does not include a blower for enhanced heat distribution.

Cross Icon Fixed Contemporary Look: While stylish, the bold conical design may not suit traditional or rustic home aesthetics.

Cross Icon Additional Costs for Custom Colors: Custom color options may come at an extra cost, increasing the overall price of the unit.

Cross Icon Propane Conversion Considerations: While compatible with both natural gas and propane, a conversion kit may be required, adding to installation expenses.

Performance

A+ Design: The Malm Zircon features a striking conical shape, offering a panoramic view of the flames and making it an eye-catching centerpiece for contemporary and retro-inspired spaces. Its powder-coated matte black finish on the top and base provides a sleek, modern aesthetic, while the option to customize in various Malm colors allows homeowners to match their décor. However, its bold, fixed design may not suit traditional or rustic home styles.

A+ Heating Performance: With 45,000 to 49,000 BTUs of heat output, the Zircon provides ample warmth for large rooms. The ceramic fiber logs and glowing embers enhance realism, creating a wood-burning fire ambiance. However, the lack of a built-in blower may limit heat distribution across larger spaces.

A Ease of Use and Installation: The millivolt pilot system with a Piezo igniter ensures easy ignition and reliable operation without electricity, making it functional during power outages. However, as a B-Vent fireplace, it requires an 8” Gas "B"-Vent for proper operation, which may increase installation costs and complexity compared to vent-free alternatives.

A Safety Features: The lift-off screen provides additional protection, allowing homeowners to control direct flame exposure. The automatic thermal damper optimizes venting efficiency, enhancing safe and effective heat retention.

A Cost and Efficiency: The B-Vent system improves ventilation and ensures clean combustion, though heat loss through venting may reduce efficiency compared to vent-free models. While custom color options enhance personalization, they may come at an extra cost, adding to the total price.

A Warranty: The Zircon is backed by a five-year limited warranty, ensuring long-term reliability and peace of mind. However, installation expenses may rise due to venting requirements and potential propane conversion needs.

What Our Customers Are Saying

“I got this unit in matte black and it’s a total showstopper in my living room. The conical shape and big flame view are cool. It pumps out serious heat (my whole downstairs stays toasty btw) and I love that it works even when the power’s out. Installation was done by a professional and it was ready to use within the day.” — John A.

"This fireplace is gorgeous - went with a custom red finish, and it pops against my retro decor. The heat output is amazing for my living room, and the logs look real. Super easy to start up with the igniter. Only downside is the vent setup added some cost, but it’s been flawless during outages." — Diana J.

#2 Empire Keystone

Empire Keystone 34" Millivolt Control With Flush Face, Natural Gas B-Vent Deluxe Fireplace

Pictured: Empire Keystone 34" Millivolt Control With Flush Face, Natural Gas B-Vent Deluxe Fireplace

The Empire Keystone Series offers the warmth and ambiance of a real flame with the convenience of gas. Its B-Vent system maintains a natural draft, safely venting combustion gases while preserving indoor air quality.

This unit is available in 34", 36", and 42" sizes and can generate between 21,000 and 30,000 BTUs of heat. It is also offered in both Intermittent Pilot (IPI) and Millivolt models, with both options available in natural gas. Each unit includes a hand-painted ceramic fiber log set that provides a realistic, full-bodied fire appearance, arranged on the compact Contour Burner for optimal flame presentation.

Designed for easy installation, the Empire Keystone features hem-bent seams which eliminate the need for extra screws and fasteners — resulting in a lighter, more rigid firebox. The Deluxe series includes matte black slat louvers and operable curtain screens, while the louvered and flush front models allow for flexible placement.

For added convenience, the Keystone Series offers customizable options, including decorative liners, bi-fold glass doors, and a variety of control options, such as millivolt and intermittent pilot models. A propane conversion kit is also available for those who prefer an alternative fuel source. Remote control compatibility ensures ease of use, allowing users to adjust their fireplace settings effortlessly.

While blower options are not available for flush face models, the fireplace is designed to distribute heat efficiently throughout the space. Lastly, this unit is backed by a three-year limited warranty on parts and a one-year warranty on remote controls.

Sizes: 34" to 42” | Heat Output: 21,000 - 30,000 BTU | Fuel Type: Natural Gas | Venting Type: B-Vent | Warranty: 3 years

What We Like

Some Considerations

Check Icon Natural Venting System: The B-Vent system maintains a natural draft, ensuring safe combustion gas venting while preserving indoor air quality.

Check Icon Variety of Sizes: The Keystone Series is available in 34", 36", and 42" models, allowing homeowners to choose a size that best fits their space.

Check Icon Realistic Fire Appearance: The included hand-painted ceramic fiber log set provides a full-bodied, natural-looking fire.

Check Icon Flexible Ignition Options: This fireplace is available in both Intermittent Pilot (IPI) and Millivolt ignition systems, catering to different user preferences.

Check Icon Durable and Lightweight Construction: Hem-bent seams eliminate the need for extra screws and fasteners, resulting in a lighter, more rigid firebox that is easy to install.

Check Icon Customizable Aesthetic: The Keystone Series offers decorative liners, bi-fold glass doors, and multiple front options, allowing users to tailor the fireplace to their style.

Check Icon Remote Control Compatibility: Users can conveniently adjust their fireplace settings with compatible remote controls.

Check Icon Propane Conversion Kit Available: A conversion kit is available for those who prefer propane as a fuel source.

Check Icon Efficient Heat Distribution: Although blowers are not available for flush-face models, the unit is designed to distribute heat effectively throughout the room.

Check Icon Decent Warranty Coverage: The unit comes with a three-year limited warranty on parts and a one-year warranty on remote controls.

Cross Icon Limited Fuel Compatibility: The Keystone Series is only available for natural gas, with propane requiring a conversion kit.

Cross Icon No Vent-Free Option: Unlike some other models, this fireplace requires B-Vent installation, which may limit placement flexibility and add to installation costs.

Cross Icon Blower Not Available for Flush Face Models: While the unit is designed for efficient heat distribution, the lack of a blower option for flush face models may reduce overall heat effectiveness.

Cross Icon Moderate Heat Output: With a maximum of 30,000 BTUs, this fireplace may not provide sufficient warmth for larger spaces compared to higher BTU models.

Cross Icon Additional Costs for Customization: Decorative liners, glass doors, and control options are sold separately, increasing the overall cost of the unit.

Cross Icon Shorter Warranty Period: The three-year limited warranty is shorter compared to some other fireplace models that offer five years or a lifetime warranty.

Performance

A Design: The Empire Keystone Series combines traditional charm with modern functionality, offering a natural B-Vent system that safely vents combustion gases while maintaining indoor air quality. The hand-painted ceramic fiber log set and compact Contour Burner provide a realistic fire appearance, while customization options such as decorative liners and bi-fold glass doors allow homeowners to tailor the look to their preference. The hem-bent seam construction makes the firebox lighter and more rigid, simplifying installation. However, the lack of a vent-free option limits placement flexibility.

B+ Heating Performance: The Keystone Series delivers between 21,000 and 30,000 BTUs, making it suitable for small to medium-sized spaces. While it efficiently distributes heat, the lack of a blower option for flush face models may reduce heat circulation in larger areas. Higher BTU models may be better suited for those needing more warmth.

A Ease of Use and Installation: The B-Vent system ensures a natural draft, improving combustion efficiency and making the unit safe for indoor air quality. Available in Intermittent Pilot (IPI) and Millivolt ignition systems, users can choose their preferred control method. The remote control compatibility enhances ease of use, while the optional propane conversion kit provides fuel flexibility. However, B-Vent installation adds complexity and cost compared to vent-free models.

A Safety Features: The B-Vent design ensures safe venting of combustion gases, minimizing indoor air pollution risks. The firebox’s durable construction and operable curtain screens enhance safety, though B-Vents may be less efficient than direct vent alternatives in retaining heat.

B+ Cost and Efficiency: While B-Vent systems improve indoor air quality, they tend to be less efficient than vent-free units, as some heat escapes through the vent. Additionally, decorative liners, glass doors, and control options are sold separately, increasing overall costs. The three-year warranty is decent but shorter than some competing models offering five years or a lifetime warranty.

B+ Warranty: The Keystone Series includes a three-year limited warranty on parts and a one-year warranty on remote controls, which is shorter than many competitors offering extended coverage on key components. While solid in durability, the warranty period may not provide the long-term protection some homeowners prefer.

What Our Customers Are Saying

“The ceramic logs are spot-on, and the remote makes it so convenient. Heat’s decent for the size, though it doesn’t quite reach the far corners without a fan. Installation was smooth with the B-vent and the warranty’s nice.” — Jessie N.

"Love how this looks in my home. The 36" size is just right and the logs make it feel like a real fire. It’s been reliable with natural gas and the venting keeps the air clean. No blower on the flush face is a downside and the warranty could be longer, but it’s a solid buy for the price!" — Derrick C.

#3 Majestic Reveal

Majestic Reveal 42" Traditional Open Hearth B-Vent Natural Gas Fireplace With IntelliFire Ignition System and Traditional Refractory

Pictured: Majestic Reveal 42" Traditional Open Hearth B-Vent Natural Gas Fireplace With IntelliFire Ignition System and Traditional Refractory

The Majestic Reveal Series recreates the timeless ambiance of a traditional wood-burning fire while offering the efficiency and convenience of gas. This open-hearth fireplace is available in 36” and 42” models (natural gas only) and provides 40,000 to 43,000 BTUs of heat.

Designed with an authentic open-front design, the Reveal allows for unobstructed views of the fire, eliminating the need for a glass barrier and enhancing the realism of the experience. Each unit includes a traditional refractory interior, a unique three-level burner, and a set of six ceramic fiber logs that create a rich, natural flame presentation.

For added realism, the package also features glowing embers, lava rock, and vermiculite, further enhancing the fire’s visual depth. The IntelliFire Ignition System continuously monitors ignition for safety and energy efficiency, ensuring reliable operation. The fireplace also operates on natural gas but can be converted to liquid propane with an optional LP conversion kit.

Note that this series requires a 6” B-vent pipe for venting to maintain proper airflow and efficiency. A variety of optional glass doors and decorative features allow homeowners to customize their fireplace to match their interior style.

For convenience, the Reveal includes a battery backup system to ensure operation during power outages. The fireplace also supports remotes with thermostat functionality for easy temperature control. Optional accessories such as a flex duct, thermal adapter, and additional control options can further enhance functionality. Lastly, this series is backed by Majestic’s lifetime limited warranty. Warranty coverage begins at the date of installation and is transferable to subsequent homeowners, providing peace of mind. 

Sizes: 36" to 42” | Heat Output: 40,000 - 43,000 BTU | Fuel Type: Natural Gas | Venting Type: B-Vent | Warranty: Lifetime

What We Like

Some Considerations

Check Icon Authentic Open-Front Design: The Reveal Series features a traditional open-hearth design without a glass barrier, creating an unobstructed view of the fire for a more realistic experience.

Check Icon High Heat Output: With a range of 40,000 to 43,000 BTUs, this fireplace provides ample warmth for medium to large spaces.

Check Icon Realistic Flame Presentation: The three-level burner, six ceramic fiber logs, glowing embers, lava rock, and vermiculite create a visually rich and natural-looking fire.

Check Icon IntelliFire Ignition System: This system continuously monitors ignition for safety and energy efficiency, ensuring reliable operation.

Check Icon Fuel Flexibility: The fireplace operates on natural gas but can be converted to liquid propane with an optional LP conversion kit.

Check Icon Customizable Aesthetic: Homeowners can enhance the look of their fireplace with optional glass doors and decorative accessories.

Check Icon Battery Backup System: The built-in battery backup allows the fireplace to operate during power outages, ensuring continued warmth.

Check Icon Remote Control Compatibility: The unit supports remote controls with thermostat functionality for easy and convenient temperature adjustments.

Check Icon Additional Accessories Available: Optional features such as a flex duct, thermal adapter, and other control options enhance functionality.

Check Icon Lifetime Limited Warranty: The Reveal Series is backed by a lifetime limited warranty, which is transferable to subsequent homeowners for added peace of mind.

Cross Icon Venting Requirement: The unit requires a 6” B-vent pipe for proper airflow and efficiency, which may add to installation costs and limit placement flexibility.

Cross Icon No Glass Barrier for Safety: While the open-hearth design enhances realism, the lack of a protective glass front may pose a safety risk, especially in homes with small children or pets.

Cross Icon Limited Sizing Options: The fireplace is only available in 36” and 42” models, which may not suit all space requirements.

Cross Icon Additional Costs for Customization: Decorative glass doors, control options, and other accessories are sold separately, increasing the overall investment.

Cross Icon Moderate Efficiency Compared to Vent-Free Units: Since it uses a B-vent system, some heat is lost through venting, making it less efficient than vent-free alternatives.

Cross Icon Fixed Traditional Look: The open-hearth design is best suited for classic aesthetics and may not appeal to those looking for a sleek, modern fireplace.

Performance

A+ Design: The Majestic Reveal Series recreates the classic wood-burning fireplace look with its authentic open-front design, eliminating the need for a glass barrier. This unobstructed view enhances realism, while the traditional refractory interior, three-level burner, and six ceramic fiber logs create a full, natural flame presentation. The inclusion of glowing embers, lava rock, and vermiculite adds further depth, making this one of the most realistic gas fireplaces available. However, its fixed traditional look may not appeal to homeowners seeking a sleek, contemporary design.

A Heating Performance: With 40,000 to 43,000 BTUs, the Reveal Series provides sufficient heat for medium to large spaces. The IntelliFire Ignition System continuously monitors ignition, improving safety and energy efficiency. However, since this B-Vent unit loses some heat through venting, it is less efficient than vent-free alternatives.

A Ease of Use and Installation: The battery backup system ensures operation during power outages, providing reliable warmth even in emergencies. The fireplace supports remote controls with thermostat functionality, offering convenient temperature adjustments. However, the requirement for a 6” B-Vent pipe may add installation costs and reduce placement flexibility.

B+ Safety Features: The IntelliFire Ignition System enhances safety, ensuring controlled and efficient ignition. However, the lack of a protective glass barrier may pose a safety risk in homes with pets or small children, as the open flames are fully exposed.

A Cost and Efficiency: While B-Vent fireplaces offer natural venting, they are moderately efficient compared to vent-free units, as some heat is lost through the venting system. Additionally, decorative glass doors, control options, and other accessories are sold separately, increasing the overall investment cost.

A+ Warranty: Backed by a lifetime limited warranty, the Majestic Reveal Series provides long-term durability and peace of mind. The warranty is transferable to subsequent homeowners, adding resale value to the property.

What Our Customers Are Saying

“Love how real this looks. No glass, just pure fire beauty. This warms up my whole downstairs, and also very reliable. Added a flex duct for better airflow. Only thing is, with no barrier, I’m extra cautious with my toddler around. Still a win!” — Pamela R.

"I just installed this in our living room and wow, it’s like having a wood fire without the hassle. The open front and glowing embers make it so realistic and it heats my living room perfectly. Love the remote thermostat, too. Just keep an eye out if you’ve got little ones since there’s no glass barrier!" — James M.

#4 Superior BRT

Superior BRT40ST 40" Traditional See-Through B-Vent Natural Gas Fireplace With Millivolt Ignition

Pictured: Superior BRT40ST 40" Traditional See-Through B-Vent Natural Gas Fireplace With Millivolt Ignition

The Superior BRT4000 Series offers a range of traditional and radiant designs that deliver a realistic wood-fire ambiance. This series is available in three models: BRT40ST, BRT4300, and BRT4500.

All three models utilize a 6” B-vent configuration, relying on locally sourced venting materials for installation, which ensures consistency in their exhaust systems. All three models are backed by a 20-year limited warranty from IHP, covering the product body, firebox, and barrier for two decades. The ceramic glass is also warranted against thermal breakage for the same 20-year period. However, additional components, such as burners and gas controls, come with shorter warranties (typically one year), while labor coverage extends up to five years.

Each fireplace features a durable textured powder coat finish, enhancing both longevity and visual appeal, and includes a ceramic fiber log set with a heavy-duty grate to create a natural, wood-fire-like ambiance. Optional accessories, such as outside air kits for improved performance and remote controls for convenience, are available across all models, though items like gas conversion kits and extra volcanic stones or embers are not included. Lastly, these fireplaces comply with relevant ANSI safety standards, incorporating protective barriers or screens for safe operation.

Superior BRT4342 42" Traditional B-Vent Propane Gas Fireplace With Electronic Ignition and White Stacked Refractory Panels

Pictured: Superior BRT4342 42" Traditional B-Vent Propane Gas Fireplace With Electronic Ignition and White Stacked Refractory Panels

The BRT40ST features a unique 40” see-through configuration, allowing visibility from multiple rooms. It is powered by a robust pan burner for an intense flame presentation and sports a black-painted interior with an optional ceramic fiber liner. Its clean-faced, heat-circulating design also includes standard tempered glass and two hoods for a polished look.

Unlike the other models, this fireplace features a millivolt ignition system, which allows it to operate even during power outages. It delivers a heat output ranging from 27,000 to 37,500 BTUs. Additionally, the unit comes equipped with a log set, two hoods, glowing embers, volcanic stone, vermiculite, a barrier, and a front face assembly. However, it does not include a transition collar or a pre-wired electrical J-box. Additional items such as a liner kit, outside air kit, remote control, wall switch kit, extra embers or stone, touch-up paint, and a gas conversion kit are also not provided.

The BRT4300 offers radiant smooth-faced models designed for single-room use. Available in 36” and 42” sizes, this fireplace is powered by a dual aluminized “U” tube burner that produces 40,000 to 45,000 BTU for a realistic wood-fire ambiance. Its interior features white stacked refractory panels on the sides, back, and hearth, which is then complemented by a smooth face with hidden screen pockets and a white brick hearth.

Superior BRT4542 42" Traditional B-Vent Propane Gas Fireplace With Electronic Ignition and White Herringbone Refractory Panels

Pictured: Superior BRT4542 42" Traditional B-Vent Propane Gas Fireplace With Electronic Ignition and White Herringbone Refractory Panels

This model is offered in both millivolt and intermittent pilot ignition (IPI) versions, with options for either natural gas or propane fuel types. The unit comes standard with a full set of components, including a transition collar, ceramic log pack, volcanic stone, ember materials, a rear log, a grate stand, and dual-access pre-wired electrical J-boxes.

Lastly, the BRT4500 offers a radiant smooth-faced design for single-room use and a dual “U” tube burner that produces 40,000 to 45,000 BTUs of heat for a convincing wood-fire ambiance. Available in 36” and 42” sizes, this unit sets itself apart with its white herringbone refractory panels on the sides, back, and hearth. This model is available with both millivolt and electronic ignition options, as well as natural gas or propane compatibility. Additionally, standard components include a transition collar, ceramic log pack, volcanic stone, ember materials, a rear log, a grate stand, and dual-access pre-wired electrical J-boxes.

Sizes: 36" to 42” | Heat Output: 27,000 - 45,000 BTU | Fuel Type: Natural Gas or Liquid Propane | Venting Type: B-Vent | Warranty: Up to 20 years

What We Like

Some Considerations

Check Icon Realistic Wood-Fire Ambiance: All models (BRT40ST, BRT4300, BRT4500) include ceramic fiber log sets, heavy-duty grates, and volcanic stones/embers, which create a convincing traditional fireplace experience.

Check Icon Variety of Designs: The series offers see-through (BRT40ST) and single-room radiant smooth-faced options (BRT4300, BRT4500), which cater to different aesthetic and functional preferences.

Check Icon High Heat Output: The heat output ranges from 27,000 to 45,000 BTUs depending on the model, which provides substantial warmth for various room sizes.

Check Icon Durable Construction: The series features a textured powder coat finish and a 20-year limited warranty on the body, firebox, barrier, and ceramic glass, which ensures long-term reliability.

Check Icon Flexible Ignition Options: The fireplaces include millivolt ignition (operable during power outages) on all models, with intermittent pilot ignition (IPI) available on BRT4300 and BRT4500, which adds convenience.

Check Icon Fuel Versatility: The units are compatible with natural gas or liquid propane, which offers installation flexibility.

Check Icon Safety Compliance: The series meets ANSI standards with protective barriers or screens, which ensures safe operation.

Check Icon Unique Features by Model: The BRT40ST offers a see-through design for multi-room visibility and a robust pan burner that produces intense flames, while the BRT4300 features white stacked refractory panels and dual-access electrical J-boxes that simplify installation, and the BRT4500 includes white herringbone panels for a distinctive look and also delivers 40,000 to 45,000 BTU output.

Check Icon Optional Accessories: The availability of outside air kits and remote controls enhances performance and usability.

Cross Icon Limited Warranty on Components: While the main structure has a 20-year warranty, burners, gas controls, and other parts are covered for only one year, and labor is limited to five years, which may disappoint some users.

Cross Icon Additional Costs for Accessories: Key enhancements like gas conversion kits, liner kits, remote controls, and extra embers/stones are not included, which increases the overall investment.

Cross Icon Model-Specific Limitations: The BRT40ST lacks a transition collar, pre-wired J-box, and several optional components, requiring additional purchases for full functionality, whereas the BRT4300 and BRT4500 focus on single-room use, limiting their versatility compared to the see-through BRT40ST.

Cross Icon Maintenance Considerations: The ceramic glass and intricate burner systems may require regular cleaning or upkeep, which could affect appearance and performance over time.

Performance

A Design: The Superior BRT4000 Series delivers a compelling wood-fire ambiance with its ceramic fiber log sets, heavy-duty grates, and included volcanic stone and embers across all models (BRT40ST, BRT4300, BRT4500). The BRT40ST’s 40” see-through configuration offers a unique open-view experience with a robust pan burner and optional ceramic fiber liner, while the BRT4300 and BRT4500 provide radiant smooth-faced designs with white stacked or herringbone refractory panels for a traditional aesthetic. The textured powder coat finish enhances durability and visual appeal, though customization is limited to optional accessories like liners and stones, which aren’t included standard, potentially disappointing those seeking extensive decorative flexibility.

B+ Heating Performance: The series provides solid heat output, ranging from 27,000 to 45,000 BTUs depending on the model — adequate for medium to large rooms. The BRT40ST offers 27,000 to 37,500 BTUs, while the BRT4300 and BRT4500 peak at 40,000 to 45,000 BTUs. Adjustable heat settings are available via optional remote controls, but energy efficiency ratings aren’t specified, suggesting it may not compete with top-tier models prioritizing fuel economy.

B+ Ease of Use and Installation: The BRT4000 Series features reliable ignition systems, with millivolt options across all models ensuring operation during power outages, and intermittent pilot ignition (IPI) on the BRT4300 and BRT4500 adding modern convenience. Controls are straightforward, especially with optional remotes, but installation flexibility is constrained by the 6” B-vent requirement and reliance on locally sourced venting materials, which may vary in quality. The BRT4300 and BRT4500 include transition collars and pre-wired J-boxes, easing setup, while the BRT40ST lacks these, potentially complicating installation.

A Safety Features: Compliance with ANSI safety standards is a strong point, with protective barriers or screens standard across all models. The ceramic glass is durable and warranted against thermal breakage, and the millivolt ignition enhances reliability during outages. While no automatic shut-off is mentioned, the inclusion of hoods and tempered glass on the BRT40ST, plus hidden screen pockets on the BRT4300 and BRT4500, bolsters child and pet safety, making this a dependable choice.

B+ Cost and Efficiency: Initial costs are reasonable for the quality, though additional expenses for optional accessories (e.g., remote controls, gas conversion kits, liner kits) and venting materials can add up. Operational efficiency is decent with natural gas or propane compatibility, but the lack of explicit energy efficiency ratings leaves its long-term value unclear. The durable construction and high heat output offer good overall value, tempered by shorter warranties on components like burners (one year).

A+ Warranty: The 20-year limited warranty on the body, firebox, barrier, and ceramic glass is a standout feature, reflecting confidence in durability. Labor coverage extends up to five years, and customer service is supported by IHP’s reputation. However, the shorter one-year warranty on burners and gas controls is a notable drawback, potentially increasing repair costs after the first year.

What Our Customers Are Saying

“I installed the see-through unit between my living and dining rooms and it’s been a total game-changer. The design is so cool and the flames are intense - keeps both rooms warm. Also love that it works during outages. For installation, we just rang our local pro and he got it up and running.” — Dallas P.

"Those herringbone panels give it such a classy vibe. It cranks out a LOT of heat and the remote makes it so easy to use. Installation was smooth with the transition collar. I also purchased the volcanic stones and it looks awesome!" — Marion F.

#5 Mason-Lite

Mason-Lite 84" Linear Gas Fireplace - 12" B-Vent

Pictured: Mason-Lite 84" Linear Gas Fireplace - 12" B-Vent

The Mason-Lite Fireplace Series offers a contemporary and versatile line of linear b-vent gas fireplaces designed for both indoor and outdoor use. Available in 36”, 48”, 60”, 72”, 84”, 96”, 108”, and 120” sizes, these fireplaces typically use single or dual 12” B-vent chimneys, though they also accommodate Class A chimneys and custom configurations like see-throughs, corners, and other linear designs.

You can choose between a flush hearth or a trough compatible with optional burners like the Opalescence Linear Burner with LED lighting or the Golden Blount Alpine Burner; heat outputs range from 85,000 to 200,000 BTUs, depending on size. Key features include lightweight modular precast construction, square-sided 90° rear corners, ANSI Z21.50 compliance, and approval for use in the USA and Canada.

This series also supports custom widths and comes with a Lifetime Limited Warranty covering the modular concrete firebox. However, this excludes accessory components, drafting issues, and damages from misuse or improper installation.

Sizes: 36" to 120” | Heat Output: N/A (Burner sold separately) | Fuel Type: N/A (Burner sold separately) | Venting Type: B-Vent | Warranty: Lifetime

What We Like

Some Considerations

Check Icon Versatile Sizing: The series offers a wide range of sizes from 36” to 120”, which accommodates various space requirements and design preferences.

Check Icon Indoor and Outdoor Use: These fireplaces are designed for both indoor and outdoor installations, which enhances their flexibility for different settings.

Check Icon Customizable Configurations: The series supports single or dual 12” B-vent chimneys, Class A chimneys, and custom designs like see-throughs and corners, which allow for tailored installations.

Check Icon High Heat Output Potential: When paired with optional burners, the heat output ranges from 85,000 to 200,000 BTUs, which provides substantial warmth for large areas.

Check Icon Contemporary Design Options: You can choose between a flush hearth or a trough with burners like the Opalescence Linear Burner with LED lighting or the Golden Blount Alpine Burner, which add modern flair and ambiance.

Check Icon Lightweight Construction: The modular precast concrete design is lightweight, which simplifies installation compared to traditional masonry fireplaces.

Check Icon Durable Warranty: The series includes a Lifetime Limited Warranty on the modular concrete firebox, which ensures long-term structural reliability.

Check Icon Safety and Compliance: The fireplaces meet ANSI Z21.50 standards and are approved for use in the USA and Canada, which guarantees safe and regulated performance.

Check Icon Custom Width Support: The ability to order custom widths beyond standard sizes offers additional flexibility, which caters to unique project needs.

Check Icon Square-Sided Rear Corners: The 90° rear corners provide a clean, modern aesthetic, which enhances the visual appeal of the fireplace.

Cross Icon Burner Not Included: The heat output and fuel type are not specified because burners are sold separately, which increases the overall cost and complexity of purchase.

Cross Icon Limited Warranty Scope: The Lifetime Limited Warranty covers only the modular concrete firebox and excludes accessory components, drafting issues, and damages from misuse or improper installation, which may leave some parts unprotected.

Cross Icon Potentially Complex Installation: The use of single or dual 12” B-vent chimneys, Class A chimneys, or custom configurations may require specialized venting and expertise, which could complicate setup.

Cross Icon No Standard Heat Output: Without a burner included, the base heat output is listed as N/A, which makes it harder to assess performance without additional purchases.

Cross Icon Cost of Optional Features: Advanced burners like the Opalescence with LED lighting or the Golden Blount Alpine Burner are optional, which could significantly raise the total investment.

Cross Icon Drafting Risks: The warranty excludes drafting issues, which suggests potential performance challenges if ventilation isn’t perfectly configured.

Cross Icon Unclear Open-Front Status: The description doesn’t specify whether the design is fully open-front or includes a barrier, which leaves ambiguity compared to the "Reveal Series" ideal.

Cross Icon Size-Specific Limitations: Larger sizes (e.g., 108” or 120”) may require more robust structural support and space, which could limit their practicality in some homes or outdoor areas.

Performance

A Design: The Mason-Lite Fireplace Series offers a sleek, contemporary aesthetic with its linear design, available in an impressive range of sizes from 36” to 120” and customizable configurations like see-throughs and corners. The flush hearth or trough options, paired with optional burners such as the Opalescence Linear Burner with LED lighting or the Golden Blount Alpine Burner, allow for modern flair and flame customization. The lightweight modular precast concrete and square-sided 90° rear corners enhance its clean, versatile look. However, the lack of clarity on whether it’s fully open-front and the exclusion of burners as standard components limit its out-of-the-box realism and personalization compared to fully equipped models.

Cross Icon Heating Performance: Although the Mason-Lite Series cannot produce its own heat, it can withstand up to 200,000 BTUs when paired with optional burners (depending on size and burner choice). This makes it capable of effectively heating large indoor or outdoor spaces. The modular design supports efficient heat distribution, but without a burner included, the base heat output is undefined, and adjustable settings depend on the chosen accessory. Energy efficiency ratings aren’t specified, leaving its performance edge uncertain relative to competitors with documented efficiency.

B+ Ease of Use and Installation: The lightweight precast construction simplifies handling compared to traditional masonry, and the series supports flexible venting with single or dual 12” B-vents, Class A chimneys, or custom setups. However, installation complexity increases with these options, potentially requiring specialized expertise, especially for larger sizes or custom configurations. The absence of a standard burner or ignition system means ease of use hinges on additional purchases, though the modular design offers reliable assembly once configured.

A Safety Features: Compliance with ANSI Z21.50 standards and approval for use in the USA and Canada ensure that the Mason-Lite B-Vent Gas Series meets rigorous safety benchmarks. The modular concrete firebox is built for durability, and while specific features like automatic shut-offs aren’t mentioned, the design’s versatility for indoor and outdoor use suggests adaptability to safety needs. The lack of clarity on barriers or screens leaves some ambiguity, but the overall certification supports confidence in child and pet safety.

B+ Cost and Efficiency: The initial cost reflects the premium versatility and size range, but the exclusion of burners and accessories like the Opalescence or Golden Blount burners increases the total investment. Operational efficiency depends on the chosen burner and fuel type (not specified without purchase), and while the lightweight design may reduce installation labor costs, custom venting or drafting challenges could add expenses. The high heat potential offers solid value for large spaces, tempered by these upfront and optional costs.

A+ Warranty: The Lifetime Limited Warranty on the modular concrete firebox is a standout, promising long-term structural integrity and reflecting high-quality craftsmanship. However, it excludes accessory components, drafting issues, and damages from misuse or improper installation, which narrows its scope. Customer service and repair support aren’t detailed, but the lifetime coverage on the core firebox provides exceptional peace of mind compared to shorter warranties.

What Our Customers Are Saying

“Okay, so I got the 60” Mason-Lite fireplace for my living room, and honestly, it’s pretty dope. It looks super sleek and modern and I love that you can pick sizes from 36” all the way up to 120” - like, it fits anywhere! I went with the Opalescence burner with those cool LED lights and let me tell you, it cranks out tons of heat too (they say up to 200,000 BTUs!). Overall, a great fireplace if you want style and options!” — Christian G.

"Splurged on the 108” for my open-plan space and… holy cow! It’s huge and gorgeous. With the dual burners, it should be pushing around 200,000 BTUs which warms the whole floor. Custom venting was done by a professional, and I must say it’s looking good." — Marlyn C.

#6 Malm Fire Drum

Malm Fire Drum 3 32" Freestanding B-Vent Propane Gas Fireplace With RAL 1000 49/15200 Powder Coat Finish

Pictured: Malm Fire Drum 3 32" Freestanding B-Vent Propane Gas Fireplace With RAL 1000 49/15200 Powder Coat Finish

The Malm Fire Drum Gas Series is a stylish, efficient, and convenient gas fireplace designed to deliver the cozy ambiance of a traditional wood fire without the hassle. Available in a 32” size, this series includes two models, the Fire Drum 2 and the Fire Drum 3, with options for natural gas or propane fuel.

Both models are clean, convenient, and efficient fireplaces that are designed to showcase realistic "glowing ember" gas logs that replicate the ambiance of a wood fire with ceramic logs mimicking glowing coals.

They are available in porcelain color and matte black, with additional powder coat colors offered, and each includes a fireplace unit, fire screen, two 9" x 24" pipe sections, a 9" x 18" to 8" slip section in matching color, and a B-vent support box. Heat outputs range from 45,000 to 49,000 BTUs, depending on the chosen fuel type. 

Both units also feature a metal hood for radiant heat, a safety pilot, a piezo ignition system, a thermally actuated damper, and a close 3” wall clearance. They are designed for installation with 8” B-Vent gas venting and have been tested to ANSI Z21.50b-1990 standards. Additionally, each model offers a large viewing opening, a 28” interior diameter and comes with a limited 5-year warranty.

Malm Fire Drum 2 32" Freestanding B-Vent Propane Gas Fireplace With RAL 1000 49/15200 Powder Coat Finish

Pictured: Malm Fire Drum 2 32" Freestanding B-Vent Propane Gas Fireplace With RAL 1000 49/15200 Powder Coat Finish

Aesthetically, the Fire Drum 2 features a boxier build, while the Fire Drum 3 has a rounded cone shape. The former also specifies that its 3" wall clearance is measured from the body of the unit, not from the baffle, while the latter mentions the 3" wall clearance without this additional clarification.

Sizes: 32” | Heat Output: 45,000 - 49,000 BTU | Fuel Type: Natural Gas or Liquid Propane | Venting Type: B-Vent | Warranty: 5 years

What We Like

Some Considerations

Check Icon Realistic Ambiance: Both models (Fire Drum 2 and Fire Drum 3) feature "glowing ember" gas logs and ceramic logs mimicking glowing coals, which replicate the cozy look of a traditional wood fire.

Check Icon Stylish Design Options: The series offers porcelain color and matte black finishes, with additional powder coat colors available, which enhance visual appeal and complement various interior styles.

Check Icon High Heat Output: The units deliver 45,000 to 49,000 BTUs depending on fuel type, which provides substantial warmth for a 32” fireplace.

Check Icon Convenient Features: Each model includes a piezo ignition system and safety pilot, which make operation simple and safe.

Check Icon Efficient Installation: The fireplaces come with a fire screen, two 9" x 24" pipe sections, a 9" x 18" to 8" slip section, and a B-vent support box, which streamline the setup process with 8-inch B-vent gas venting.

Check Icon Compact Clearance: Both units feature a close 3” wall clearance, which allows for flexible placement in smaller spaces.

Check Icon Radiant Heat Enhancement: The inclusion of a metal hood boosts radiant heat distribution, which improves heating efficiency.

Check Icon Safety Standards: The series has been tested to ANSI Z21.50b-1990 standards, which ensures reliable and safe performance.

Check Icon Large Viewing Area: Each model offers a large viewing opening and a 28” interior diameter, which provide an impressive fire display.

Check Icon Fuel Flexibility: The units are compatible with natural gas or propane, which offers installation versatility.

Cross Icon Limited Warranty: The series comes with only a 5-year limited warranty, which is significantly shorter than some competitors offering 20-year coverage.

Cross Icon Single Size Option: The fireplaces are available only in a 32” size, which limits customization for larger or smaller spaces.

Cross Icon Ambiguity in Clearance Specification: The Fire Drum 2 specifies that its 3" wall clearance is measured from the body, not the baffle, while the Fire Drum 3 lacks this clarification, which could lead to installation confusion.

Cross Icon No Advanced Accessories Included: The series does not mention options like remote controls or outside air kits, which could limit convenience compared to other models.

Cross Icon Maintenance Potential: The porcelain and powder coat finishes, while durable, may require careful cleaning to maintain their appearance over time, which could add to upkeep efforts.

Cross Icon Thermally Actuated Damper Limitation: The thermally actuated damper may restrict manual control over airflow, which could affect performance in certain conditions.

Performance

A Design: The Malm Fire Drum Gas Series excels in recreating the cozy ambiance of a wood fire with its realistic "glowing ember" gas logs and ceramic logs mimicking glowing coals. Available in stylish porcelain colors, matte black, and additional powder coat finishes, the series offers aesthetic versatility. The Fire Drum 2’s boxier build contrasts with the Fire Drum 3’s rounded cone shape, catering to varied tastes. The large viewing opening and 28” interior diameter enhance flame visibility, though the single 32” size and lack of advanced customization options like decorative liners may not satisfy those seeking bespoke designs.

A Heating Performance: With a heat output of 45,000 BTUs for propane and 49,000 BTUs for natural gas, the Fire Drum Gas Series delivers substantial warmth for its 32” size, suitable for medium-sized spaces. The metal hood enhances radiant heat distribution, boosting efficiency. However, adjustable heat settings aren’t explicitly mentioned, and while the thermally actuated damper aids efficiency, specific energy efficiency ratings are absent, leaving its performance relative to top-tier models unclear.

B+ Ease of Use and Installation: The series features a piezo ignition system and safety pilot for straightforward, reliable operation, with the Fire Drum’s ability to function without electricity adding resilience. Installation is streamlined with included components—fire screen, two 9" x 24" pipe sections, a 9" x 18" to 8" slip section, and a B-vent support box—designed for 8-inch B-vent venting. The 3” wall clearance offers placement flexibility, though the Fire Drum 2’s clearance specification (from the body, not the baffle) versus the Fire Drum 3’s lack of clarification could confuse installers.

A Safety Features: Tested to ANSI Z21.50b-1990 standards, the series ensures reliable safety compliance. The safety pilot and thermally actuated damper provide built-in protections, while the metal hood and fire screen enhance safe heat distribution and accessibility. Although no automatic shut-off is noted, the design supports child and pet safety with its standard components, making it a solid performer in this category.

B+ Cost and Efficiency: The initial purchase price is reasonable for a stylish, high-output gas fireplace, with fuel flexibility (natural gas or propane) adding value. Operational costs are likely moderate, given the BTU range, but the absence of efficiency ratings makes long-term savings uncertain. The included venting components reduce setup costs, though the lack of advanced accessories like remote controls may require additional investment, slightly offsetting the overall value.

C+ Warranty: The 5-year limited warranty covers the Fire Drum Gas Series, offering decent protection but falling short of competitors with 20-year warranties. While it reflects confidence in the core unit, the limited duration and unspecified coverage details for components like the burner or ignition system may leave users wanting more comprehensive support or repair service assurances.

What Our Customers Are Saying

“I got the fireplace in matte black for my living room, and it’s a vibe. The glowing logs look so real, and it pumps out a ton of heat which keeps my space super warm. Love the easy start and how close it sits to the wall.” — Walter R.

"This boxy beauty in powder coat green is my new favorite thing. The ceramic logs glow like a real fire and it’s been cranking a lot of heat into my living room. Super easy to light, and the installation wasn’t too troublesome." — James D.

Where To Buy?

Prior to purchasing B-vent gas fireplaces, ensure you’re buying directly from the manufacturer or a certified reseller. This guarantees you receive an authentic product, complete with valid warranties and reliable customer support. Purchasing from unverified sellers could result in problems with product quality, warranty issues, or even receiving an incorrect unit.

Searching for a dependable source for your B-vent gas fireplaces?

Visit US Fireplace Store, the premier spot for top-tier B-vent gas fireplaces available today. We offer the latest and most sought-after models from trusted brands like Malm, Majestic, Superior Fireplaces, and more. Explore our collections of B-vent gas fireplaces now to discover the ideal fireplace for your home.

Have questions about which model suits your needs?

Our exceptional five-star customer service team is ready to deliver personalized, comprehensive guidance, drawing from their extensive expertise with B-vent gas fireplaces. They’ll assist you at every stage of your decision-making process.

US Fireplace Store is your trusted destination for premium B-vent gas fireplaces.

🔥 Don’t delay — reach out to us TODAY!

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