Looking for the perfect fireplace to combine efficiency, style, and warmth in your home?
Our collection of traditional ventless gas fireplaces offers the best models to create the perfect ambiance and warmth in your home. Whether you want a cozy, rustic feel or a sleek, modern look, these vent-free fireplaces are easy to install and provide a clean, traditional fire without the need for chimneys or vents.
In this guide, we’ll walk you through some of the top options, covering design, heating performance, installation, safety, and value. Keep reading to find the ideal fireplace for your space and enjoy the warmth you deserve!
Table of Contents
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 Monessen Lo-Rider

The Monessen Lo-Rider Series is a vent-free firebox designed to replicate the look of a true masonry fireplace with its low-profile hearth and expansive viewing area. By eliminating the need for a chimney, flue, or vent, this firebox allows for flexible installation in spaces where a traditional vented fireplace would be impractical or costly. Its flush-hearth design and tall opening enhance the realism, mimicking the feel of a wood-burning fireplace while maximizing heat output.
Featuring a clean, louver-less design, this series is available in 36”, 36” see-through, and 42” sizes. It includes mesh screens with hide-away pockets, a black hood, and an angled firebox with unique air channels that efficiently move heat into the room. It offers a choice of interior panels, including Cement Gray Stacked, Multi-Tonal Brown, Multi-Tonal Gray Stacked, and Multi-Tonal Grey Herringbone. Additional accessories such as burners, gas logs, mantels, trim kits, fans, and contemporary fronts are available for further customization. Take note that Multi-tonal and Black Glass interior panels are available for single-sided units only. Traditional concrete interior panels are available for single-sided and Designer See-Through models.
Designed for vent-free operation, the Lo-Rider only requires a connection to a gas line, making it one of the most economical and efficient ways to add a fireplace to any home. Whether installed within a wall or a freestanding cabinet, it provides the beauty of a traditional fire with modern convenience. Lastly, this series is also UL design certified to ANSI Z221.91.A2002 and backed by a limited lifetime warranty.
Sizes: 36" to 42" | Heat Output: N/A (burner sold separately) | Fuel Type: N/A (burner sold separately) | Venting Type: Vent Free | Warranty: Lifetime Limited
What We Like |
Some Considerations |
|
Installation Requires Gas Line: The Lo-Rider Series only requires a gas line connection for installation, which may limit its use in homes where a gas line is not readily available. |
Performance
Design: The Monessen Lo-Rider Series delivers an elegant, masonry-style aesthetic with a low-profile hearth and a tall opening that enhances the realism of a traditional wood-burning fireplace. Its clean, louver-less design provides a seamless look, while the variety of interior panel options — including Cement Gray Stacked, Multi-Tonal Brown, Multi-Tonal Gray Stacked, and Multi-Tonal Grey Herringbone — allows for customization to match different home styles. The availability of both single-sided and see-through models further expands its design versatility.
Heating Performance: As a vent-free firebox without an integrated burner, the Lo-Rider Series does not generate heat on its own. The heating output depends entirely on the separately purchased burner and log set, meaning performance will vary based on the chosen components.
Ease of Use and Installation: With no need for a vent, chimney, or flue, the Lo-Rider Series offers a simplified installation process. Its flexibility allows it to be installed in-wall or within a freestanding cabinet, making it suitable for a variety of home layouts. However, installation does require a gas line connection, which may limit its accessibility for some homeowners.
Safety Features: The Lo-Rider Series is UL design certified to ANSI Z221.91.A2002, ensuring it meets high safety standards. The vent-free design prevents heat loss through a chimney, and the optional mesh screens with hide-away pockets provide added protection against direct contact with flames. The lack of a glass barrier also enhances safety for families with children and pets.
Cost and Efficiency: Since the firebox does not require venting or a chimney, it offers a cost-effective way to achieve the look of a traditional fireplace. Its efficiency will depend on the selected burner and gas log set, but the ability to maximize heat output without heat loss through venting makes it a budget-friendly choice for those seeking warmth and ambiance. The need to purchase a separate burner does add to the overall cost, though it allows for flexibility in heat output and fuel type.
Warranty: The Monessen Lo-Rider Series is backed by a limited lifetime warranty, ensuring long-term reliability and peace of mind. This strong warranty coverage makes it a durable and worthwhile investment for homeowners looking for a customizable and efficient firebox.
What Our Customers Are Saying
“I’ve had the Vail Series installed for about six months now and I have no complaints. It looks fantastic, especially with the black porcelain liner I chose. The heat output is strong, and the remote control makes it super easy to use.” — Mary D.
"The flames look much more natural than other vent-free fireplaces I’ve seen, and the heat it puts out is fantastic." — Richard K.
#2 Empire Vail

Pictured: Empire Vail 32" Millivolt Control With On/Off Switch, Natural Gas Vent Free Premium Fireplace
The Empire Vail Series is a premium vent free gas fireplace that features ceramic glazed pellets in the burner that creates natural, flickering flames for a realistic fireplace experience. Delivering a powerful heat output of 32,000 BTU for the 32” and 36,000 BTUs for the 36”, users can customize their fireplace with a choice of two hand-painted log sets, either Ceramic Fiber or Refractory, and five decorative liner options, including aged brick, stacked limestone, traditional, banded brick, and black porcelain.
Designed for both style and functionality, the Vail Series includes a matte black arched screen front that beautifully frames the logs and optional brick liner. The unit also comes with matte black slat louvers and a hood, with additional customization options such as extended hoods, blowers, ember kits, decorative louvers, and mantels available separately.
Zero-clearance certified, this fireplace is ideal for flexible installation, making it a cost-effective choice compared to vented models. Equipped with an integrated Oxygen Depletion Sensor for safety, the Vail Series is available in millivolt and intermittent pilot models and can operate via remote or thermostat controls.
Beyond its efficiency and customization options, this fireplace provides reliable heating, even during winter power outages, ensuring comfort when it's needed most. Backed by a five-year limited warranty on parts and labor and a one-year limited warranty on remote controls, this series is a versatile and dependable addition to any home.
Sizes: 32" to 36" | Heat Output: 25,000 - 36,000 BTU | Fuel Type: Natural Gas and Liquid Propane | Venting Type: Vent Free | Warranty: 5 years
What We Like |
Some Considerations |
|
|
Performance
Design: The Empire Vail Series features a sleek, modern design with a matte black arched screen front, slat louvers, and a hood that frames the logs and liner beautifully. Homeowners can customize the aesthetic with two hand-painted log set options (Ceramic Fiber or Refractory) and five decorative liners, including aged brick, stacked limestone, traditional, banded brick, and black porcelain, allowing for a personalized look. Additional accessories, such as extended hoods, blowers, ember kits, and mantels, provide further opportunities for customization.
Heating Performance: With 32,000 BTUs for the 32” and 36,000 BTUs for the 36” model, the Vail Series delivers ample warmth for medium to large spaces. The ceramic glazed pellets in the burner create natural, flickering flames, enhancing realism while ensuring consistent heat distribution. However, the limited size options may not be sufficient for homeowners looking for larger fireplaces with higher BTU outputs.
Ease of Use and Installation: The zero-clearance certification allows for installation against combustible materials, providing versatility in placement. Available in millivolt and intermittent pilot models, the Vail Series can be controlled via remote or thermostat, offering convenient operation. The vent-free design eliminates the need for a chimney or flue, making installation cost-effective and flexible.
Safety Features: The integrated Oxygen Depletion Sensor (ODS) automatically shuts off the fireplace if oxygen levels drop too low, ensuring safe operation. The vent-free technology retains all heat indoors, maximizing efficiency while meeting strict safety standards. However, as with all vent-free models, homeowners should check local building codes and regulations, as vent-free appliances may be restricted in certain areas.
Cost and Efficiency: The Empire Vail Series operates at 99.9% efficiency, ensuring minimal heat loss and optimal fuel usage. The zero-clearance design and flexible installation options reduce setup costs, making it a budget-friendly alternative to vented fireplaces. However, the burner and log sets are sold separately, which increases the overall cost.

What Our Customers Are Saying
“I had a great experience purchasing my new fireplace insert and natural gas logs. Great price, very quick and easy to order. Highly recommend doing business with this company.” — Victor S.
"It warms up my living room in no time. The flames look great and the ceramic pellets really make them flicker naturally. I love that I could choose the log set and liner to match my style." — Lamar M.
#3 Superior VRT

Pictured: Superior VRT3542 42" Traditional Vent-Free Gas Fireplace With White Herringbone Refractory Panels
The Superior VRT Series is a versatile line of vent-free fireboxes available in seven (7) models: VRT2500, VRT3100, VRT3200, VRT3500, VRT4000, VRT4500, and the VRT6000. These fireboxes provide the look and feel of a traditional fireplace without requiring venting, making them ideal for various installation settings, including homes, apartments, and renovations.
Let’s start with their similarities. All VRT models are compatible with ANSI Z21.11.2 vent-free gas log sets for efficient and clean operation. Each features a durable powder-coated finish and includes a mesh fire screen for added safety, and most models offer optional accessories such as blower kits, outside air kits, and decorative screen doors. You can also pair each unit with a variety of vent-free gas log sets and controls. Lastly, the VRT Series is backed by a 20-year limited warranty.
The VRT2500 features a heat deflection hood with a clean-faced opening and simple white stacked refractory panels. Available in 36” and 42” sizes, these fireplaces have a 24”-tall opening.
The VRT3100 features a smooth-faced heat-circulating design with refractory floors and versatile liners including White Stacked and Back Bay Brown. Available in 32”, 36”, and 42” sizes, this unit includes a heat deflection hood. Next, the VRT3200 offers 32”, 36”, and 42” models with a 28” tall opening and low masonry design with realistic stacked or herringbone refractory liners. Heat deflection hood is included with the unit. On the other hand, the VRT3500 features a louverless design for a modern, clean aesthetic. These fireplaces are available as 36” and 42” models with a 28” tall opening and white stacked refractory panels.
The VRT4000 is ideal for smaller or compact spaces. They come in 32” and 36” models with pre-installed two-tiered burners, ember beds, and integrated log grates. They also come in Millivolt and Electronic Ignition Controls. BTUs range from 17,000 to 33,000 BTUs. The VRT4500 features a 30” tall opening and insulated firebox for increased performance in colder climates. This model is available in 36", 42", and 50" sizes, featuring easy-access gas line knockouts for quick installation and dual outside air kits (left-hand/right-hand) to ensure optimal performance. Stacked or herringbone refractory patterns are also available.
Lastly, the VRT6000 offers a 30” opening with a Mosaic Masonry kiln-fired firebrick liners in a variety of color. Additionally, this model comes in 36”, 42”, and 50” sizes and offers easy-access gas line knockouts for quick installation. It also includes dual outside air kits (left-hand/right-hand) to ensure optimal performance. You can also select between stacked or herringbone refractory patterns.
Note: burners/log sets are sold separately for every model except the VRT4500.
Sizes: 32" to 50" | Heat Output: 17,000 - 33,000 BTU (depending on the model) | Fuel Type: Natural Gas and Liquid Propane | Venting Type: Vent Free | Warranty: 20 years
What We Like |
Some Considerations |
|
|
Performance
Design: The VRT Series offers a wide range of seven models, including VRT2500, VRT3100, VRT3200, VRT3500, VRT4000, VRT4500, and VRT6000, making it one of the most versatile vent-free firebox collections available. With sizes ranging from 32” to 50”, homeowners can choose the right fit for their space. The fireboxes feature various refractory liners, including White Stacked, Back Bay Brown, stacked, and herringbone patterns, allowing for both traditional and modern aesthetics. The durable powder-coated finish and mesh fire screen add to the longevity and safety of the unit.
Heating Performance: The heat output varies by model, with some units, like the VRT4000, offering up to 33,000 BTUs, making them effective for medium-sized rooms. However, smaller models like the VRT2500 have a lower BTU output, which may be more suitable for compact spaces rather than large, open-concept areas.
Ease of Use and Installation: The vent-free design allows for flexible placement without requiring a chimney or external venting. Many models include easy-access gas line knockouts, simplifying installation. The VRT4500 and VRT6000 models come with dual outside air kits to improve performance, while the VRT4000 includes pre-installed burners and log grates, reducing setup time. However, most models require separately purchased burners and log sets, which may add complexity to the installation process.
Safety Features: The VRT Series is ANSI Z21.11.2 compliant, ensuring safe and efficient vent-free operation. The included mesh fire screens provide additional protection, reducing the risk of direct flame contact. However, as with all vent-free appliances, local regulations may limit installation in certain areas due to air quality concerns.
Cost and Efficiency: The vent-free technology ensures 99.9% efficiency, maximizing heat retention while minimizing fuel waste. The ability to choose from different sizes and models helps homeowners find the best balance between heating needs and budget. However, the requirement to purchase separate burners and log sets for most models adds to the overall cost.
Warranty: The Superior VRT Series is backed by a 20-year limited warranty, offering long-term durability and peace of mind. This extensive warranty makes it a reliable investment for homeowners seeking a customizable and efficient vent-free firebox.
What Our Customers Are Saying
“The VRT4500 exceeded my expectations. I live in a colder climate, so the insulated firebox was a big selling point. It really does help retain and distribute heat well. We got the 50-inch size, and it looks fantastic in our living room. The dual outside air kits also help with air circulation. Very happy with this purchase!” — Walter C.
"I love the customization options with the VRT Series. I went with the VRT4500 because of its taller opening and insulated firebox, and it looks stunning! The stacked refractory panels give it a nice, high-end look, and the vent-free operation makes it very efficient. I also appreciate that it comes with easy-access gas line knockouts, which made installation a breeze. The heat output is great for our living room, and it keeps the space cozy without drying out the air. Overall, a fantastic purchase!" — Amy W.
#4 Monessen Attribute

The Monessen Attribute Series is designed to deliver an impressive fireside experience with its angled design that maximizes heat output while giving a clean and louverless aesthetic. Featuring proprietary reversible interior panels in Multitonal Brown and Gray, it offers both herringbone and traditional styles, while an optional reflective black glass panel provides a sleek, contemporary touch. The deep firebox and wide opening accommodate most 18” vent-free log sets, with some 24” models also compatible, allowing for a fully customized fireplace setup.
Available in 32”, 36”, and 42” sizes, this series only requires a gas line connection and eliminates the need for a chimney, flue, or vent. It includes mesh screens with hide-away pockets, a hood, a junction box, and Monessen’s exclusive two-piece hearth, ensuring easy maintenance and access without needing to remove the log set.
With its angled firebox and uniquely engineered air channels, it efficiently distributes heat throughout the room. UL design certified to ANSI Z221.91.A2002, the Attribute Series is backed by a limited lifetime warranty.
Sizes: 32" to 42" | Heat Output: N/A (burner sold separately) | Fuel Type: N/A (burner sold separately) | Venting Type: Vent Free | Warranty: Lifetime Limited
What We Like |
Some Considerations |
|
|
Performance
Design: The Monessen Attribute Series offers a refined, modern aesthetic with its clean, louverless design and deep firebox. The proprietary reversible interior panels in Multitonal Brown and Gray provide flexibility, allowing homeowners to choose between herringbone and traditional brick styles. For a contemporary touch, the optional reflective black glass panel enhances the visual appeal. The firebox's wide opening accommodates most 18” vent-free log sets, with select 24” models also fitting, making it a highly customizable option for different home styles.
Heating Performance: As a vent-free firebox that does not include a burner, the Monessen Attribute Series does not generate heat on its own. The heating output is entirely dependent on the separately purchased burner and log set, meaning the performance will vary based on the chosen components.
Ease of Use and Installation: The vent-free design eliminates the need for a chimney, flue, or vent, simplifying installation. The firebox requires only a gas line connection, making it a cost-effective and flexible choice. Additionally, the included mesh screens with hide-away pockets and a two-piece hearth provide easy access for maintenance without requiring the removal of the log set. While installation is relatively straightforward, the requirement of a gas line may limit its accessibility in some homes.
Safety Features: The Monessen Attribute Series meets stringent safety standards as it is UL design certified to ANSI Z221.91.A2002. Its vent-free operation ensures that no heat is lost through a chimney, and the mesh screens add an extra layer of protection, reducing direct contact with the flames. The firebox's safety certifications make it a secure option for homeowners looking for a reliable and compliant fireplace solution.
Cost and Efficiency: Since the firebox does not require venting, it provides an affordable way to achieve the look of a traditional fireplace while maximizing heat retention. However, the cost of purchasing a separate burner and log set should be factored in. While the efficiency will depend on the chosen burner, the firebox’s engineered air channels enhance heat distribution, making it a practical choice for those seeking warmth and ambiance.
Warranty: Backed by a limited lifetime warranty, the Monessen Attribute Series provides long-term reliability and peace of mind. This strong warranty coverage ensures that the firebox remains a worthwhile investment for homeowners looking for a durable and customizable vent-free fireplace solution.
What Our Customers Are Saying
“We live in an area that gets cold winters, and this vent-free firebox has been a great addition to our home. The angled firebox and air channels do a great job of spreading heat throughout the room. We installed it with a Monessen vent-free gas log set, and it provides plenty of warmth for our family room.” — Randy T.
"Super easy to set up. The mesh screens with hide-away pockets are a great touch, making it easy to access without taking everything apart. The deep firebox makes it look like a real wood-burning fireplace, and we were able to use a 24” log set, which looks perfect. I also like the angled firebox design. Highly recommend!" — Maria H.
#5 Monessen Exacta

Pictured: Monessen Exacta 42" Vent Free Circulating Clean Face Firebox
The Monessen Exacta Series is a vent free firebox designed for maximum airflow and efficient heat distribution, making it a cost-effective heating solution. Its zero-clearance design allows for flexible installation, enabling placement flush against combustible surfaces like drywall or wood, saving installation costs.
The firebox features Monessen’s advanced technology, an angled firebox with engineered air channels that move more heat into the room for optimal efficiency. With a clean, louverless design, the Exacta Series provides an expansive view of the flames. Sizes include 32”, 36”, and 42” with Herringbone and Stacked Traditional Interior Panels available.
This series includes mesh screens with hide-away pockets, black interior panels, and Monessen’s exclusive two-piece hearth, which allows for easy maintenance without removing the log set. The deep firebox and wide opening also accommodate various Monessen vent-free log sets, giving homeowners the ability to customize their fireplaces.
Since no chimney or venting is required, installation is simple and affordable. UL design certified to ANSI Z221.91.A2002, the Monessen Exacta is backed by a limited lifetime warranty.
Sizes: 32" to 42" | Heat Output: N/A (burner sold separately) | Fuel Type: N/A (burner sold separately) | Venting Type: Vent Free | Warranty: Lifetime Limited
What We Like |
Some Considerations |
|
|
Performance
Design: The Monessen Exacta Series offers a modern and refined aesthetic with its clean, louverless design, providing an unobstructed view of the flames. Its zero-clearance construction allows it to be installed directly against combustible materials like drywall or wood, making it a versatile option for various home layouts. The series also includes two interior panel choices—Herringbone and Stacked Traditional—allowing homeowners to tailor the look to their space.
Heating Performance: As a vent-free firebox that does not include a burner, the Exacta Series itself does not generate heat. The heating output is entirely dependent on the separately purchased burner and log set, meaning performance will vary based on the selected components.
Ease of Use and Installation: The zero-clearance, vent-free design makes installation straightforward and budget-friendly, eliminating the need for a chimney or flue. The firebox can be placed flush against walls, maximizing space efficiency. Additionally, the inclusion of mesh screens with hide-away pockets and Monessen’s two-piece hearth allows for convenient maintenance without removing the log set. However, installation requires a gas line, which may not be feasible for every home.
Safety Features: The Monessen Exacta Series meets strict safety standards, as it is UL design certified to ANSI Z221.91.A2002. The mesh screen provides a layer of protection, preventing direct contact with the flames. Its vent-free technology ensures that all heat is retained indoors without the risk of drafts or heat loss through a chimney.
Cost and Efficiency: The firebox’s vent-free design makes it a cost-effective option by eliminating the need for expensive venting systems. The efficient airflow system, with engineered air channels, enhances heat distribution throughout the room, ensuring energy-efficient operation. However, the cost of a separate burner and log set must be factored into the total investment.
Warranty: Backed by a limited lifetime warranty, the Monessen Exacta Series ensures long-term reliability. This strong warranty coverage adds significant value, making it a dependable choice for homeowners looking for a customizable and efficient vent-free firebox.
What Our Customers Are Saying
“This is soooo nice! I’ve gotten so many compliments on the remodel of my fireplace!” — Sandra.
"This fireplace is stunning! The wide flame view really makes a difference in creating a cozy atmosphere. We paired it with a vent-free log set and the heat output is great. The air channels really help move heat into the room efficiently. Also, the mesh screens with hide-away pockets make it easy to access for maintenance." — Trinidad M.
#6 Kingsman ZVF

Pictured: Kingsman 24" ZVF Zero Clearance Vent Free Gas Firebox
The Kingsman ZVF Series is a collection of zero-clearance vent-free gas fireplaces and fireboxes, offering a high-efficiency, vent-free heating solution without requiring a chimney or external venting. This series also offers three models: ZVF, ZVFCV, and ZVFP.
Let’s start with their similarities. All models are 99.99% efficient due to their vent free design. Aside from this, they can be installed in newly constructed or renovated homes because of their zero-clearance design. These units do not come with a burner or log set; they are sold separately. On the bright side, they do come with an Oxygen Depletion Sensor or ODS, which shuts down the burner when oxygen levels drop too low. They also support remote controls and wall switches. Lastly, all units are ANSI/CSA listed for the USA and Canada. However, some jurisdictions may come with installation restrictions due to vent-free regulators.
The ZVF model is a zero clearance vent-free gas fireplace with a compact design perfect for smaller rooms. Available in a 24” size, this unit’s burner (sold separately) features a reliable standing pilot valve with a flame guard. This model is also approved for bedroom use with a 10,000 BTU burner. Additionally, it can handle 25,000 to 30,000 BTUs. Included with your purchase is a safety barrier screen, but you may purchase additional (optional) accessories including grill (louver) kits, firebrick panels, multiple surrounds, log sets, fan kits, and thermostat controls.

Pictured: Kingsman ZVF33P 33” Zero Clearance Vent Free Gas Firebox
On the other hand, the ZVFCV model features a larger firebox model that is suitable for main living areas. Do take note that it is not allowed to be placed inside bedrooms, bathrooms, mobile homes, or RVs. Available in 39”, 42”, and 47” sizes, this firebox requires a manual or remote-ready GLVF24 burner and supports LOGF18, LOGF24, or LOGF30 fiber log assemblies (all sold separately). These burner options also feature a matchless piezo ignition system, variable flame adjustment, and a high/low millivolt or manual valve for customized operation. Additionally, this firebox can handle 40,000 BTUs max.
To enhance the aesthetic and functionality, optional accessories such as refractory fiber brick liners, safety screens, log bits, a fan kit, a universal light kit, a tile lip kit, thermostats, and remote controls are available. Take note that customers should verify local codes and regulations first before installation, as vent-free appliances may be restricted in certain areas.
Lastly, the ZVFP model is a fully contained fireplace unit, making it distinct from the ZVFC firebox, which requires additional burner and log set selections. This model offers a versatile installation suitable for various living areas but may have local restrictions regarding placement in bedrooms or bathrooms, depending on the selected burner and BTU rating. The ZVFP fireplace can be customized with optional surrounds, decorative accessories, and control options such as remote operation or wall switch control. Sizes include 33” to 47”.
The Kingsman ZVF Series comes with a Basic One-Year Warranty, covering all component parts found to be defective in materials or workmanship within the first year of installation. This includes labor costs, provided the repair is approved by Kingsman and performed by an authorized Kingsman dealer. Additionally, the Limited Lifetime Warranty covers the heat exchanger, combustion chamber, and burner for the original owner as long as they own the unit. However, while replacement parts are provided through Kingsman’s distributor, labor, material, freight, and handling costs are not included under this warranty.
Sizes: 24" to 47" | Heat Output: N/A (burner sold separately) | Fuel Type: N/A (burner sold separately) | Venting Type: Vent Free | Warranty: Lifetime Limited
What We Like |
Some Considerations |
|
|
Performance
Design: The Kingsman ZVF Series provides a sleek, zero-clearance vent-free design that allows for flexible installation in both new and renovated homes. The clean, louverless aesthetic enhances the viewing area, while the ability to customize with refractory fiber brick liners, decorative surrounds, and other accessories makes this series adaptable to a variety of home styles. With three model options — ZVF, ZVFCV, and ZVFP — homeowners can choose the size and configuration that best suits their space, from compact installations to larger focal-point fireplaces.
Heating Performance: Since the ZVF Series models do not include burners or log sets, the heating output depends entirely on the selected burner. While the ZVF model can accommodate up to 30,000 BTUs and the ZVFCV model supports up to 40,000 BTUs, the overall performance will vary based on the burner and fuel type chosen.
Ease of Use and Installation: The zero-clearance construction simplifies installation by allowing placement against combustible surfaces, reducing construction costs. These units require only a gas line connection, making them easier to install compared to vented models. However, installation complexity varies across models, as the ZVFCV and ZVFP units require additional burner and log set selections. The inclusion of remote and wall switch support enhances convenience, though installation restrictions in some jurisdictions may limit placement.
Safety Features: The ZVF Series includes an Oxygen Depletion Sensor (ODS) in all models, ensuring safe operation by shutting down the burner if oxygen levels drop too low. The units are ANSI/CSA certified for both the U.S. and Canada, meeting strict safety standards. A safety barrier screen is included with the ZVF model, and optional mesh screens and additional safety features are available for customization.
Cost and Efficiency: With 99.99% efficiency, the ZVF Series maximizes heat retention, making it an energy-conscious choice. The vent-free operation eliminates the need for a chimney, flue, or external venting, reducing installation costs. However, the need to purchase a separate burner and log set increases the upfront investment, and some installation restrictions may require additional considerations.
Warranty: The Kingsman ZVF Series offers a Basic One-Year Warranty covering defects in materials and workmanship, as well as a Limited Lifetime Warranty on the heat exchanger, combustion chamber, and burner for the original owner. While the warranty ensures long-term durability, it does not cover labor, material, freight, or handling costs for replacement parts, which could increase repair expenses.
What Our Customers Are Saying
“We went with the ZVFP model for our main living area, and it has completely transformed the space. The flames look realistic, and we love how it’s customizable with different accessories. The heat output is strong, and the remote operation is super convenient. The zero-clearance feature made installation much easier than expected. Definitely worth it!” — Desiree O.
"The brick liner looks authentic, and the flames are very realistic. The matchless piezo ignition and variable flame adjustment make operation simple." — Lori D.
#7 Monessen Aria

Pictured: Monessen Aria 36" Traditional Vent Free Liquid Propane Gas Fireplace With IPI Ignition
The Monessen Aria Series is a stylish and efficient heating solution available in 32” and 36” sizes in natural gas and propane models. These fireplaces are capable of outputting up to 37,000 BTUs. Designed for flexible installation without requiring a chimney, this vent-free fireplace offers an expansive view of its flames while maintaining a clean, modern aesthetic. It also features Monessen’s Natural Blaze Burner System and an 18” flex line with an on/off shut-off valve for easy operation.
With customization options that allow users to personalize both the interior and exterior, the Aria can be styled with firebrick, porcelain panels, or Black Magic glass liners. The fireplace can also be configured with traditional log sets or contemporary fireglass. Available in Millivolt or IPI Control, the unit is compatible with a range of optional accessories, including wood cabinets, mantels, trim kits, volcanic rock, flickering embers, remote controls, and wall switches.
Built with Monessen’s exclusive Triple Play Burner System, the Aria delivers a full-depth ember bed, glowing logs, and rich, random yellow flames for a realistic fire experience. Its zero-clearance design allows for easy and cost-effective installation, while an optional blower can be added for enhanced heat circulation.
Backed by a limited lifetime warranty, the Aria is a versatile and attractive addition to any home. However, customers should check local installation codes, as vent-free appliances may be restricted in some areas.
Sizes: 32" to 36" | Heat Output: 37,000 BTU | Fuel Type: Natural Gas or Liquid Propane | Venting Type: Vent Free | Warranty: Lifetime Limited
What We Like |
Some Considerations |
|
|
Performance
Design: The Monessen Aria Series features a sleek, modern design with a large viewing area that showcases its realistic flames. Homeowners can customize the interior with firebrick, porcelain panels, or Black Magic glass liners, and choose between traditional log sets or contemporary fireglass for a personalized aesthetic. The clean, louverless design enhances its contemporary appeal, while optional accessories like wood cabinets, mantels, and trim kits further expand customization possibilities.
Heating Performance: With a 37,000 BTU heat output, the Aria Series effectively warms medium to large rooms, making it a reliable heat source. Monessen’s Natural Blaze Burner System and Triple Play Burner System enhance the realism of the flames while delivering efficient warmth. However, since this is a vent-free model, its heating performance may be influenced by room size and local ventilation conditions.
Ease of Use and Installation: The zero-clearance, vent-free design simplifies installation, eliminating the need for a chimney or flue. It only requires a gas line connection, making it a cost-effective option for new and renovated homes. Available in Millivolt or IPI Control, the unit supports remote controls and wall switches for added convenience. However, burners and log sets are sold separately, which may add complexity to the installation process.
Safety Features: The Aria Series is ANSI/CSA certified and designed with safety in mind. The vent-free technology retains heat efficiently, while the Oxygen Depletion Sensor (ODS) ensures safe operation by shutting down the unit if oxygen levels drop too low. While vent-free models require proper room ventilation, the built-in safety features provide homeowners with peace of mind.
Cost and Efficiency: The vent-free design makes the Aria a cost-effective heating solution by maximizing heat retention and eliminating the expense of venting. It offers high efficiency with low fuel consumption, making it an energy-conscious choice. Additionally, local regulations may impose restrictions on vent-free fireplace installations.
Warranty: Backed by a limited lifetime warranty, the Aria Series ensures long-term durability and reliability. The strong warranty coverage adds value and makes it a solid investment for homeowners looking for a stylish and efficient heating solution.
What Our Customers Are Saying
“The flames look very realistic, and the heat output is excellent. It warms up the space quickly, and I love that I didn’t need a chimney. The customization options were great” — John F.
"The heating performance is great! This fireplace is perfect for my medium-sized living room. The heat distribution is solid, and it definitely keeps the space warm, even on the colder days. I also like that it's a vent-free model. Installation was super easy since we didn’t need to worry about a chimney. The zero-clearance design is a huge bonus, and it fit perfectly into our room without any hassle." — Martin A.
#8 Mason-Lite

Pictured: Mason-Lite 44" Vent Free Firebox Kit
Mason-Lite Vent-Free Firebox Kits provide an elegant and cost-effective alternative to traditional masonry fireplaces for both indoor and outdoor applications. Designed for affordability, easy handling, and consistent quality, these modular concrete fireplaces are available in standard sizes of 39”, 44”, and 49”. Additionally, they are capable of withstanding 40,000 (indoor) to 50,000 BTUs (outdoor) of heat.
Their lightweight construction, using high-quality pumice for superior heat retention, allows for multi-story combustible floor installations while maintaining dynamic thermal efficiency and zero clearance to combustibles.
These kits support ANSI Z-21.11.2 approved gas log sets and vent-free burners for contemporary media, offering flexibility in design and function. With 50% less weight and cost compared to traditional hand-built masonry fireplaces, they provide significant savings on shipping, handling, and installation.
Each kit includes refractory mortar, rebar, and T-bar, ensuring durability and easy setup. These fireplaces are ICC-ES tested, meeting IBC, IRC, and IFGC codes, and are made in the USA with a limited lifetime warranty. For installation, homeowners should check local building permit requirements before proceeding.
Sizes: 39" to 49" | Heat Output: N/A (burner sold separately) | Fuel Type: N/A (burner sold separately) | Venting Type: Vent Free | Warranty: Lifetime Limited
What We Like |
Some Considerations |
|
|
Performance
Design: The Mason-Lite Vent-Free Firebox Kits provide a sleek and cost-effective alternative to traditional masonry fireplaces, combining modular construction with high-quality pumice for superior heat retention. The lightweight design makes installation easier, even in multi-story homes, while the zero-clearance construction allows for placement against combustible surfaces. These fireboxes support ANSI Z-21.11.2 approved vent-free burners, allowing homeowners to customize with traditional log sets or contemporary media.
Heating Performance: As a vent-free firebox that does not include a burner, the Mason-Lite Kits do not generate heat on their own. The heat output varies based on the selected burner, with indoor applications supporting up to 40,000 BTUs and outdoor applications up to 50,000 BTUs. The final heating performance will depend entirely on the chosen gas log set or contemporary burner.
Ease of Use and Installation: The modular, lightweight design makes the Mason-Lite Fireboxes easier to install than traditional masonry units, reducing labor costs and handling challenges. The zero-clearance feature allows installation in a variety of spaces, and each kit includes refractory mortar, rebar, and T-bar, ensuring a straightforward assembly process. However, local building permits may be required, which could add complexity to the installation process.
Safety Features: These fireboxes are ICC-ES tested and compliant with IBC, IRC, and IFGC codes, ensuring they meet strict safety standards. The zero-clearance construction allows for safe installation against combustible surfaces, while the vent-free design maximizes heat retention without the risks associated with an open chimney. Since the fireboxes support only ANSI-approved vent-free burners, they ensure compliance with safety regulations.
Cost and Efficiency: The modular construction provides a 50% reduction in weight and cost compared to hand-built masonry fireplaces, making them a budget-friendly choice for homeowners seeking a masonry look at a lower price. Additionally, vent-free operation maximizes efficiency by keeping all heat inside the home. However, the need to purchase a separate burner and log set increases the total cost.
Warranty: The Mason-Lite Vent-Free Firebox Kits come with a limited lifetime warranty, providing homeowners with long-term peace of mind regarding durability and performance. The USA-made construction ensures high-quality craftsmanship and strict adherence to industry standards.
What Our Customers Are Saying
“The firebox itself looks great - clean, sleek, and modern. I chose a contemporary burner to go with it, which adds a nice touch to the overall aesthetic. The heat output is impressive as well, and I can definitely feel the warmth in the room” — James N.
"What I really appreciate is how much more affordable this is compared to a traditional masonry fireplace. The cost of shipping and installation was way less and the modular design made it much easier to install ourselves. Plus, it's built to last with a limited lifetime warranty which gives me confidence in the long-term durability." — Sarah B.
#9 Superior VCM

Pictured: Superior VCM3026 26" Traditional Vent-Free Natural Gas Fireplace With Thermostat Ignition
The Superior VCM Series is a compact yet powerful heating solution designed to bring warmth and ambiance to any space. Measuring 26” with a slightly deeper profile than most fireplaces in its class, it includes a full-size ceramic fiber log set and a dual burner system. This creates a realistic wood-burning fire experience but with the convenience of natural gas or propane. With a 99.9% heating efficiency, it delivers up to 26,000 BTUs, making it an effective and economical choice.
Featuring an arched screen with a rolled louvered front, a durable textured powder-coat exterior, and a standard black painted interior, the VCM Series combines style and functionality. It is available in both millivolt (remote-ready) and thermostat ignition systems, allowing users to choose the control method that best suits their needs. Optional accessories such as a blower kit, remote control, wall switch, and outside air kit enhance customization options.
This vent-free fireplace is designed for easy installation, with a compact 9.5” depth that makes it ideal for renovations or smaller spaces. Backed by a 20-year limited warranty, the Superior VCM provides a reliable, efficient, and visually appealing heating solution for any home.
Sizes: 26" | Heat Output: 14,000 - 26,000 BTUs | Fuel Type: Natural Gas and Liquid Propane | Venting Type: Vent Free | Warranty: 20 years
What We Like |
Some Considerations |
|
|
Performance
Design: The Superior VCM Series features a compact yet stylish design, making it a great choice for smaller spaces or renovations. The arched screen with a rolled louvered front, textured powder-coat exterior, and black-painted interior contribute to a classic yet modern aesthetic. However, with only a 26” size option, it may not suit homeowners looking for a larger, more visually dominant fireplace.
Heating Performance: Despite its compact size, the VCM Series delivers up to 26,000 BTUs with a 99.9% efficiency rating, ensuring effective heating for smaller rooms. The dual burner system provides a realistic flame appearance, while the full-size ceramic fiber log set enhances the traditional wood-burning effect. However, its heat output may not be sufficient for larger or open-concept spaces.
Ease of Use and Installation: The vent-free design eliminates the need for a chimney or flue, making installation simple and cost-effective. The 9.5” compact depth is ideal for small spaces or retrofits. Additionally, homeowners can choose between millivolt (remote-ready) and thermostat ignition systems, allowing for flexible operation. Optional accessories like a blower kit, remote control, and wall switch further enhance convenience.
Safety Features: The VCM Series meets strict safety standards as a vent-free unit and is designed to maximize heat output safely. While vent-free appliances require proper ventilation and adherence to local regulations, the unit’s design ensures safe operation in most residential settings.
Cost and Efficiency: With a 99.9% efficiency rating, the VCM Series maximizes heat retention while minimizing fuel consumption, making it an economical heating solution. However, vent-free appliances may be restricted in some areas, and homeowners should check local regulations before purchasing.
Warranty: Backed by a 20-year limited warranty, the Superior VCM Series provides long-term reliability and durability. While this warranty ensures confidence in the unit’s quality, it does not offer the lifetime coverage provided by some competing brands.
What Our Customers Are Saying
“The design is sleek and modern. I also love the realistic flame from the dual burner system combined with the ceramic fiber log set. It really mimics the ambiance of a wood-burning fire. It gives the room that traditional fireplace feel.” — Sara M.
"This compact little unit packs a punch! The heat is perfect for my small living room and it warms things up quickly." — Frederick R.
#10 Monessen Symphony

Pictured: Monessen Symphony 32" Vent Free Traditional Natural Gas Fireplace With IPI Control System
The Monessen Symphony Series is a vent free gas fireplace designed for smaller spaces. Available in 24” and 32” models, it delivers up to 27,000 BTUs of warmth while operating at 99.9% efficiency. Its slim design with expansive views enhances the ambiance of any room, while its vent-free setup eliminates the need for a chimney or external venting, making installation fast and cost-effective.
Featuring the Natural Blaze Burner System and an exclusive 7-piece log set, the Symphony provides a realistic flame effect similar to a traditional fireplace. For a more contemporary aesthetic, homeowners can customize it with fireglass. The fireplace is available with millivolt or IPI (EcoLogic) control and supports both natural gas and propane fuel options. An easy-access control panel simplifies operation and allows for seamless integration of optional accessories such as fronts, brick panels, mantels, fan kits, flickering embers, remotes, and wall switches.
CSA design-certified and backed by a limited lifetime warranty, the Symphony Series offers efficient, customizable, and hassle-free heating. Customers should check local installation codes before purchase, as vent-free appliances may be restricted in some areas.
Sizes: 26" | Heat Output: 22,000 - 26,000 BTUs | Fuel Type: Natural Gas and Liquid Propane | Venting Type: Vent Free | Warranty: 20 years
What We Like |
Some Considerations |
|
|
Performance
Design: The Symphony Series is designed with compact spaces in mind, offering 24” and 32” size options. Its expansive viewing area enhances ambiance, while the Natural Blaze Burner System and 7-piece log set provide a realistic flame effect. Homeowners looking for a modern aesthetic can opt for fireglass media, adding to its customizability. While ideal for smaller rooms, it may not provide the visual presence some homeowners seek in a larger fireplace.
Heating Performance: The Symphony Series provides up to 27,000 BTUs, making it efficient for heating smaller to mid-sized rooms. With 99.9% efficiency, it ensures maximum heat retention without heat loss through a vent or chimney. However, its lower BTU output may not be sufficient for larger spaces.
Ease of Use and Installation: The vent-free design eliminates the need for external venting, making installation quick, flexible, and cost-effective. Available in Millivolt and IPI (EcoLogic) control systems, it supports remotes, wall switches, and additional accessories. An easy-access control panel simplifies the operation and integration of optional features.
Safety Features: The CSA design certification ensures compliance with strict safety standards. The vent-free operation maximizes heat retention, though homeowners must ensure proper room ventilation. As with all vent-free models, local regulations may restrict installation in some areas.
Cost and Efficiency: The Symphony Series offers a cost-effective heating solution, eliminating chimney and venting costs while operating at 99.9% efficiency. The customization options and affordable installation add to its value. However, vent-free regulations may limit its accessibility.
Warranty: Backed by a limited lifetime warranty, the Symphony Series provides long-term durability and reliability, ensuring homeowners receive lasting performance and peace of mind.
What Our Customers Are Saying
“It's been a fantastic addition to the space. The compact design is perfect for the size of my room and it provides plenty of heat. I can feel the warmth right away when I turn it on.” — Patricia A.
"Installation was super easy because it’s vent-free, which saved us time and money compared to traditional vented models. I also love the convenience of the system because it allows me to use the remote to adjust the flame height without having to get up. The easy-access control panel also makes everything straightforward." — Louis D.
Where To Buy?
Shop at US Fireplace Store, your ultimate destination for the best traditional ventless gas fireplaces on the market. We carry the latest and most popular models from renowned brands like Empire Comfort Systems, Monessen, Superior Fireplaces, and more. Browse our vent free gas fireplaces today to find the perfect unit for your home.
Got a question about which model is right for you?
Our five-star customer service is here to provide tailored and complete advice and share their vast experience with gas fireplaces. They will guide you through every step of your selection process, highlighting the realistic flame effects on the screen and ensuring compatibility with your home's existing outlets.
US Fireplace Store is your go-to shop for exceptional traditional ventless gas fireplaces.
🔥 Don't wait any longer! Contact us TODAY.