Heating Industry Sector

AHRI's membership is divided into four broad groups called Industry Sectors, each overseen by a Leadership Council. The Sector scope, membership, and related standards and certification programs are listed below.

Heating Sector Scope

The Heating Sector includes both products and components.


    Oil, gas, electric and solid fuel boilers which conform to the ASME Boiler and Pressure Vessel Code.

    Appliances intended for commercial or industrial premises: (1) direct gas-fired heaters, (2) indirect gas- and oil-fired heaters, and associated components, (3) unit heaters, and (4) duct furnaces.

    Gas-fired direct heating equipment, including vented room heaters, wall furnaces, direct vent wall furnaces, vented decorative appliances, sauna heaters, and floor furnaces.

    Devices used in residential, commercial, and industrial applications for any of the following purposes: detection of fuel gases, detection of products of fuel combustion, and analysis of products of fuel combustion.

    Factory-made assembly containing the air moving device, compressor, and refrigerant-to-water heat exchanger using ambient air as the heat source. Heat pump pool heaters shall provide function of heating pool/spa water with controlled temperature, but may include functions of cooling water.

    Indirect Water Heaters having a volume (potable plus heat source) of 120 gallons or less, for which Published Ratings are available, and are designed for installation with a hot water boiler(s) as the only heat source.

    Gas infrared heaters for outdoor use and non-residential indoor use (excluding industrial process burners).

    Commercial Finned Tube Radiation equipment and components

    Residential vent-free gas-fired heating products and related components and accessories.

    Water heating appliances (includes gas, oil, and electric storage and instantaneous water heaters, swimming pool heaters (not including heat pump pool heaters), and heaters used in conjunction with solar water heating systems) and relief valves.


      Air and combustion gas-moving devices, consisting of impellers, motors, and associated components, produced for other HVACR manufacturers.

      Gas burners, oil burners, and combination gas/oil burners and components thereof for use in residential, commercial and industrial applications.

      Factory-designed and prefabricated products used as part of a building’s gas distribution system or to connect gas fired appliances and equipment to the building’s distribution system. These products include corrugated stainless steel tubing (CSST) systems listed in compliance with ANSI LC 1, Fuel Gas Piping Systems using Corrugated Stainless Steel Tubing; gas appliance connectors and quick-disconnect devices. Specifically excluded are products included in other AHRI product scopes.

      Controls, including components, and accessories, for use on gas-fired utilization equipment (including, but not limited to, combination gas controls; manual gas valves; gas appliance pressure regulators; automatic gas valves; automatic gas ignition systems; flame sensors, monitors and programmers; gas filters and sediment traps; thermostatic system components; automatic flue and vent dampers; oxygen depletion sensing (ODS) devices, pressure sensors and switches; and line pressure regulators.

      Radiant pipe distribution systems; oil burners and components such as: oil primary relays, automatic vent damper and flue damper devices used on boilers, hydronic controls, low water cutoffs, boiler sections, boiler jackets, circulators, hydronic distribution stations, gauges, heat exchangers, pumps, sheet metal parts, tanks, tankless coils, fluid valves, steam and hot water unit heaters, cabinet unit heaters, boiler powered water heaters, and sensors.

      Venting systems and related equipment used for the venting of gas and oil burning appliances (includes metallic and plastic gas venting products, and metallic chimney liners).


        A.O. Smith Corporation
        Adams Manufacturing
        Advanced Distributor Products
        Advanced Thermal Hydronics
        AERCO International
        AKM Semiconductor, Inc.
        Allied Air Enterprises
        Allied Engineering Company
        American Zettler, Inc.
        Amtrol, Inc.
        APCOM, A Division of State Ind.
        AquaCal, Inc.
        AquaPRO Systems
        Ariston Thermo USA LLC
        Bacharach Inc.
        Beckett Air Inc.
        Beckett Thermal Solutions
        Bekaert Combustion Technology USA
        Bock Water Heaters, Inc.
        Bosch Thermotechnology Corp
        Boyertown Furnace
        Bradford White Corp.
        Built Right Pool Heaters, LLC
        Burnham Commercial
        C. Cowles & Company
        C.I.B. Unigas S.p.A.
        Calcana USA Ltd.
        Cambridge Air Solutions
        Camus Hydronics Ltd.
        Carrier Corporation
        Cleaver Brooks
        Combustion Research Corporation
        Crown Boiler Co.
        DDR Americas Inc.
        Dexen Industries, Inc.
        ebm-papst Inc.
        ECR International, Inc.
        Eemax, Inc.
        Emerson Commercial and Residential Solutions
        Empire Comfort Systems
        Fasco Industries, Inc.
        Fenwal Controls
        Field Controls, LLC
        Fulton Heating Solutions, Inc.
        G&F Manufacturing, Inc.
        Gas-Fired Products, Inc.
        GE Appliances, a Haier Company
        Granby Furnaces Inc.
        Greenheck Fan Company
        Hays Fluid Controls
        Hayward Industries, Inc.
        Hearth & Home Technologies
        Heatco Inc.
        Hose Master, LLC.
        Honeywell Performance Materials & Technologies
        Hubbell Electric Heater Co.
        IBC Technologies Inc.
        Industrias Rheem
        Infinitum Electric
        Infrared Dynamics
        IPEX USA LLC.
        Kane USA, Inc
        Kiturami USA Corporation
        Laars Heating Systems Company
        Lennox International Inc.
        Maxitrol Company
        Mestek, Inc.
        Metal-Fab, Inc.
        Modine Manufacturing Company
        Morrison Products, Inc.
        Navien, Inc.
        N.E.T. SRL
        New Yorker Boiler Company, Inc.
        Nidec Motor Corporation
        Nirvana Chauffe Piscine Heat Pump Inc.
        Noritz America Corporation
        Nortek Global HVAC, LLC
        NTI Boilers, Inc.
        OmegaFlex, Inc.
        Parker Boiler Co
        Patterson-Kelley, LLC
        Patterson Pump Company
        PB Heat, LLC
        Pentair Aquatic Systems
        Pietro Fiorentini USA
        POLIDORO USA Inc.
        Pro-Flex, LLC
        PVI Industries, LLC
        QHT Inc.
        Raypak, Inc.
        RBI Water Heaters, Division of Mestek, Inc.
        Reliance Worldwide Corporation
        Revcor, Inc.
        Rheem Sales Company, Inc.
        Riello Corporation of America
        Rinnai America Corporation
        Roberts-Gordon, LLC
        R. W. Beckett Corporation
        S.I.T. Controls USA, Inc.
        Slant/Fin Corp.
        Smith Cast Iron Boilers
        Solaronics, Inc.
        Suntec Industries, Inc.
        Superior Radiant Products Inc.
        Taco, Inc.
        Testo, Inc.
        Thermal Solutions Products, LLC
        Thermeau Industries Inc.
        Titeflex Corporation
        Trane Technologies
        Triangle Tube Phase III Co. Inc.
        U.S. Boiler Company, Inc.
        Usines GIANT Factories, Inc.
        Valencia Pipe Company
        Vaughn Thermal Corporation
        Vesta DS, Inc.
        Viessmann Manufacturing Company (U.S.) INC.
        Ward Manufacturing, LLC
        Weil-McLain, a division of The Marley-Wylain Company
        Williams Furnace Co.
        Xylem Incorporated
        Zehnder Rittling
        Zodiac Pool Systems LLC

        Standards and Guidelines


        Direct Heating

        Gas Controls

        • International Electrotechnical Commission Technical Committee 72. IEC/TC 72 was initially established to fill the needs for international safety standards for automatic electrical controls for use in household appliances and similar equipment. The scope was recently expanded to include industrial applications. The USNC TAG was established to harmonize U.S. safety philosophies and practices within IEC/TC 72 with those of the European Union and Asia Pacific regions.
        • International Organization for Standardization, ISO/TC 161. ISO/TC 161 was established to develop a set of International Standards in the field of control and protective devices for gas and oil burners and appliances using as a bases existing local or regional standards.

        Gas Detection and Analysis

        Heat Pump Pool and Spa Heaters

        Indirect Water Heaters

        Infrared Heaters


        Water Heaters


        Certification Programs