List of companies from research coverage that are profiled in the study
- National Environmental Products Ltd. (Canada)
- Zonex Systems (United States)
- Wisconsin Fuel & Heating, Inc. (United States)
- Lennox International Inc. (United States)
- American Standard Heating & Air Conditioning (United States)
- Zonefirst (United States)
- Honeywell International Inc. (United States)
- Trane Inc. (Ireland)
- Arzel Zoning Technology, Inc. (United States)
- Keen Home Inc. (United States)
Additional players considered in the study are as follows:
Reliable Heating & Air (United States)
,
Jon Wayne Service Company (United States)