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.

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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.

Commercial and Industrial Forced-Air Heating

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.

Direct Heating

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

Gas Detection and Analysis

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.

Heat Pump Pool and Spa Heaters

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

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.

Infrared Heaters

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

Radiation Products

Commercial Finned Tube Radiation equipment and components

Vent-Free Gas Products

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

Water Heaters

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.

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Blowers, Fans, and Motors

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.

Flexible Metallic Gas Piping Systems (FMGPS)

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.

Gas Controls

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.

Hydronic Components

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 Products

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).

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The following member companies are participants in the Heating Industry Sector.

Heating Industry Sector Members

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
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.
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
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

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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

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Certification Programs
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Staff Contacts