Intertherm Heating and Cooling | FurnaceCompare®

Intertherm Brand Overview

Intertherm Manufacturer Overview

Intertherm makes air conditioners; electric, gas and oil furnaces; and heat pumps specifically geared toward use in manufactured homes. According to information from the parent company, these products can differ significantly in design and standards from products used in traditional residential applications. Intertherm is owned by Nordyne Group. Nortek Inc., the parent company of Nordyne Group, reported 2017 revenue of approximately $2.5 billion.

Corporate History

Founded in 1919, Intertherm became a Nordyne company in 1987. In 1998, Nordyne started marketing under White-Westinghouse brands Frigidaire, Philco, Tappan, Kelvinator and Gibson. Each of these brands today falls under Nortek’s residential heating and cooling division, alongside Broan, Mammoth, Maytag, Miller, and NuTone.

Product Lines

Intertherm’s gas and oil furnace line includes the classic CMF series in the 80 percent efficiency models. They also offer series, such as the CMF95 and the M7 gas furnaces, in 95.1 percent efficiency models. The systems’ unique ultra pilot system automatically shuts off all gas in the event of an outage. The Intertherm gas furnaces are air-conditioning ready. The oil furnaces are built with high-efficiency drum or multiple tube heat exchangers for long life and efficiency. There is a range of fuel source choices as natural gas, propane gas or oil.


Intertherm provides a standard 1-year warranty for its heating and cooling products. This includes 1 year parts, 1 year labor and 1 year mileage for the technician. In addition, the company provides an option to extend the warranty to five or ten years as part of the Contractors’ Preferred Protection Plan, available through individual dealers. The company also offers a 10-year warranty on compressors in its packaged units, a 5-year warranty on compressors in split systems and a 10-year warranty on furnace heat exchangers (lifetime heat exchanger on CMF models).

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