- Amana
- Air conditioners, packaged heat pumps and central air conditioning units for home heating and cooling systems.
- American Geothermal
- Specializes in design and manufacture of geothermal heat pumps for the ready mix concrete industry and other special heating and cooling equipment for industrial process heating, cooling and heat recovery.
- Atlantic Groundsource
- Providing turnkey geothermal heat pump solutions for residential, commercial and industrial applications.
- Bryant Heating & Cooling Systems
- Products include gas and oil furnaces, fan coils, boilers, heat pumps, air conditioners, packaged products, humidifiers, ventilators, other air quality accessories.
- ECONAR Energy Systems Corporation
- Manufactures geothermal heat pumps for residential and commercial applications.
- FHP Manufacturing Inc.
- Manufacturing water source and geo-thermal heat pumps.
- GeoComfort
- Design and manufacturing of a full line (residential and commercial) brand of geothermal equipment.
- Rheem Manufacturing Company
- Manufacturers of residential air conditioners, heat pumps, gas furnaces, air handlers and commercial HVAC products.
- Sunteq Geo Distributors
- Manufactures a series of geothermal heat pumps, zone valve assemblies for remoting split system air handlers, and the Consta-Purge Deaerating Reservoirs.
- WaterFurnace International, Inc.
- Manufactures heat pumps for commercial, residential heating and cooling and water heating.
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