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Enervex RS 016 IntelliDraft Gas Burning Chimney Fan System

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Perfect Fire. Any Fuel. ENERVEX provides a full line of listed, fully integrated residential venting systems for a truly one-stop design.

All products are manufactured by one manufacturer, which means our systems will work together seamlessly. No guesswork in the design process, and the flexibility to add what you need, when you need it.

At ENERVEX, one supplier takes full responsibility for the performance, efficiency and sustainability of your system with the best guarantees and warranties in the business.

Corporate History

Innovative Venting Designs. Engineered for Savings.

ENERVEX is a world-leading supplier of mechanical draft systems and integrated venting design solutions. We introduced the industry’s first mechanical draft fan in 1958 and today we deliver custom-built, one-stop venting systems from boiler outlet to chimney termination. ENERVEX serves North and Central America as well as the Middle East, operating from our 80,000-sq. ft. facility in Atlanta, GA. 

ENERVEX evaluates and builds every solution from the ground up with careful evaluation of the unique cost variables and long-term financial savings for each customer. Through superior manufacturing technology and decades of experience, we’re delivering high-quality, listed and certified venting solutions that are economical, environmentally sustainable, aesthetically pleasing, reliable, and code compliant. Backed by the best performance guarantee in the business.

All of our solutions are delivered under a single, highly respected name with full responsibility taken for operational excellence. That’s our performance guarantee, and the reason why the ENERVEX brand has been trusted by some of the most successful projects in the world.

Established in 1990, ENERVEX is based in Alpharetta, Georgia and operates in a number of countries with emphasis on the US, Canada, Central American and the Middle East.

The company's global business is 70 percent commercial (offices, healthcare, education, sports facilities, multi-family and mixed-use buildings, hotels and resorts) and 30 percent residential.

Since the invention of the chimney fan, ENERVEX continues to bring innovative draft control and mechanical draft solutions to market:

  • Modulating mechanical draft systems (1991)
  • Modulating combustion air supply systems (1995)
  • True inline mechanical draft fans (2006)
  • Fan-powered flue gas economizers (2011)
  • Inline flue gas economizer with modular heat exchanger systems (2013)
  • Ultra-energy efficient, permanent-magnet motors – standard in most products (2015)
  • Single universal chimney systems listed for virtually all venting applications (2015)
  • High-temp, pressure & leak-resistant graphite gaskets for sealing fan/chimney joints (2015)
  • ONLY supplier with a 6-Month Performance Guarantee (ALWAYS)



Intelligent Draft and Damper System (IntelliDraft)

An environmentally sustainable and quiet intelligent draft solution for gas-fired fireplaces that saves energy and maintains safe and proper draft while protecting against dangerous chimney downdraft and fireplace spillage.

Maintaining proper and safe draft conditions for the fireplace while providing combustion air are massive challenges in today’s tight construction. Now you can set new standards in fireplace safety and energy savings for your gas fireplace or other gas-fired decorative appliances. Meet Intellidraft, ENERVEX's Modulating Fireplace Draft and Safety System.

IntelliDraft is an economical, environmentally friendly intelligent draft solution that quietly maintains perfect draft for fireplaces while protecting homes from dangerous chimney downdraft and fireplace spillage.

It is the first completely automated venting control system for use with gas fireplaces and is ideal for single-family dwellings.


  • Can be integrated into virtually any fireplace design
  • Perfect draft saves fuel, eliminates spillage & carbon emissions
  • Protects against downdrafts and spillage
  • Automatically shuts down fireplace in unsafe conditions
  • Chimney closes when fireplace is not in use, saving energy
  • No need for glass doors


  • Provides ambiance
  • Ensure proper draft & safe operating conditions at all times
  • Save fuel and energy
  • Get design freedom for virtually any chimney application
  • Discreet termination.

How it works:

The IntelliDraft connects a draft and safety controller, the ADC150 and its pressure sensor, to an RS Chimney Fan, the MFD Chimney Damper and the fireplace’s gas valve.

ADC150, Modulating Fan w. Damper Control & Pressure Transducer
The ADC150 is a Modulating Fan and Damper Control used with gas fireplaces where it monitors and maintains a constant draft in a chimney. It is used with model RS fans.

It monitors the draft in a chimney system via a connection to a pressure transducer (XTP) attached to the chimney, and maintains the draft by modulating the fan speed.

Use: The ENERVEX ADC150 is a Modulating Fan Control used with up to 2 appliances to monitor and maintain a constant draft or pressure in a chimney or duct. The ADC150 can be used with models RS, RSHT, and GSV fans. It can control the fan speed directly or via a Variable Frequency Drive (VFD, sold separately).
The ADC150 is typically used to control the draft of a gas-fired, sealed fireplace or water heaters.

Description: The ADC150 monitors the draft in a chimney system via a connection to a pressure transducer (XTP) attached to the chimney, and maintains the draft by modulating the fan speed. It provides a 10-120V AC power to single phase fans and 0-10V DC control signal to control 3-phase fans via a variable frequency drive.

The control has an integrated safety system that assures the heating appliance(s) is shut down in case of insufficient draft after 15-180 seconds (user adjustable). The ADC150 has an integrated damper relay that works with ENERVEX MFD (Mechanical Fireplace Damper) to automatically open the damper prior to fan initialization and close the damper after the appliance shuts down. End-switches in the damper actuator wired to the ADC150 ensure the damper must be fully open prior to allowing the appliance to operate. The control also features a post purge function (3 min) to evacuate the chimney system of residual flue gases after the appliance shuts down.

Material: The enclosure is made of NEMA 1 rated ABS plastic.

Standard Equipment:
• ADC150 Control Box
• XTP Pressure Transducer
• Stack Probe
• 6' Silicone Tubing


  • 0-10VDC control signal for EDrive and 10-120VAC for variable speed
  • Integrated safety system with adjustable shut down time
  • Integrated damper relay that works with an EcoDamper.
  • End-switches in an EcoDamper actuator can be wired to the ADC150
  • Post purge function (180 sec) to evacuate residual flue gases after fireplace shuts down. 
RS 016 Chimney Fan

RS Chimney Fan

Are you having incurable draft problems? Look no further for a solution. The RS Chimney Fan mounts outside the chimney, where it literally sucks the smoke out from the chimney flue.

The chimney fan is designed to disperse the smoke sideways (horizontal) just like a standard chimney cap. The RS is particularly suitable for gas-fired fireplaces and stoves.

Installation is clean and easy - and the fan's compact design is barely visible from the ground level. The fan can be recessed or hidden behind the chimney top enclosure.


  • Quiet Operation
  • Variable-speed motor
  • Use with gas-fired appliances
  • Comes in 4 sizes
  • Complete fan and control packages available from a single manufacturer
  • Low operating costs
  • 6-months Performance Guarantee
    MFD Mechanical Fireplace Damper

    This MFD Mechanical Fireplace Damper prevents heat from escaping up through the chimney when the fireplace is not in use, and prevents backdraft down the chimney. It is designed for chimney top installations.

    The MFD is used as a component in a combined fan and damper system. The damper actuator can be interlocked to a control (ADC100 or ADC150) so it only operates when the fireplace is in use and the fan is running.

    The damper is equipped with fail safe system and is rated for 1400°F (760°C).


    • Saves energy
    • Meets energy code requirements
    • Integrated fail safe system
    • Low profile


    When the user wants to turn on the fireplace – typically using a wall switch – the controller signals the mechanical chimney damper to open. Once open, the controller automatically ramps up the chimney fan speed until the draft set-point has been reached and the integrated draft protection switch closes. At this point, the controller allows the fireplace to fire by opening the gas valve.

    During operation of the fireplace the control continues to monitor the draft and will maintain the proper draft set-point by modulating the chimney fan speed whenever needed.

    When the user turns the fireplace or appliance off, the control leaves the damper open until all residual combustion products have been exhausted out of the building by the chimney fan; then the control discontinues chimney fan operation and closes the damper.

    If for any reason the draft set-point can’t be maintained during operation, the controller will completely shut down the fireplace or appliance operation.

    Events that could cause a complete shutdown include:

    • Extreme chimney downdrafts
    • Extreme building depressurization
    • Electrical blackouts
    • Electrical or mechanical failure to any IntelliDraft system component

    Download Intellidraft Brochure here.



    Model Modulating Fan & Damper Controller (ADC150)
    Power Supply 1 x 120VAC
    Amperage 6.3A
    Control Mode Continuous or Intermittent
    Control Signals 0-10 VAC (for VFD) and 120/240 VAC (for direct connect)
    Range Of Operation 0-0.6 inWC / 0-150 Pa
    Tolerance 0.01 inW (3 Pa) +/- 10%
    Output 10-120VAC / 0-10VDC
    Control Relays (6) Max 120VAC/8A
    EMC Standard Emission: EN50 081-1, Immunity: EN50 081-2
    Insulation Class NEMA 1 (IP 20)
    Warranty 2-Year Factory Warranty
    Listing Certification

    UL508/UL 60947, Standard for Industrial Control Panels
    CSA C22.2 No. 14-95, Standard for Industrial Control Equipment


    Model RS Chimney Fan
    Capacities 0-1,800 CFM (0-3,000 m3/h)
    Material Cast Aluminum Housing and Stainless Steel Axial Vane
    Drive Axial Vane
    Motor Variable Speed, TEFC, Class H
    Max. Temp 575°F (300°C)
    Warranty 2-Year Factory Warranty
    10-Year Warranty Against Corrosion Perforation
    Listings UL 378 Standard for Draft Equipment
    UL 705 Standard for Power Ventilators
    CSA3-B255-M81 Standard for Mechanical Flue Gas Exhauster
    Model RS 016
    Discharge  Horizontal
    Fan Type Axial Vane
    Motor Type Totally enclosed, Variable speed, Class H
    Voltage   VAC 1x120V @ 60 Hz
    Amperage   Amps 3.9
    RPM  1600
    CFM at 0.0Ps 1950
    Motor Output  hp / kW  1/3 / 0.25
    Weight lbs / kg 61 / 28
    kg 28
    Dimensions A in / mm 16.0 / 407
    B x B in / mm 18.8 / 478
    C in / mm 17.4 / 441
    D in / mm 3.9 / 100
    E in 15.4 / 391
    Temperature Rating Interm. 575°F / 300°C
    Cont. 482°F / 250°C


    Model MFD Mechanical Fireplace Damper
    Available Sizes (ID) 6" to 16" (150mm to 400mm)
    Material Stainless Steel 316L
    Actuator Brushless DC Motor
    Power 120VAC or 24VAC/VDC Brushless Motor
    Torque 54 in-lbs (6 Nm)
    Speed 90° in 15 Sec.
    End Switches 2
    Temperature Rating 1400°F (760°C)
    Warranty 2-year Factory Warranty


    We complete our systems with the addition of a wide range of accessories. That is one of the advantages of working with a single manufacturer. No need to deal with multiple suppliers hoping everything will go together properly in the field.

    Click to see accessories

    MFD Mechanical Fireplace Damper

    An energy-saving, low profile, automated chimney-top mounted fireplace damper for use with gas-fired applications.

    SCA Steel Chimney Adapter

    The adapter used to provide support for the installation of an RS or RSHT chimney fan on a round steel chimney..

    ASCA Steel Chimney Adapter

    The adapter used to provide support for the installation of an RS or RSHT chimney fan on a round, air-cooled steel chimney.

    Click HERE to shop for more Accessories.