| Type | Style | Company Name | Link |
|---|---|---|---|
| Direct Expansion | Carrier Corp. | http://www.corp.carrier.com/ | |
| Direct Expansion | McQuay International | http://www.mcquay.com/mcquay/Home/HomePage | |
| Direct Expansion | Rheem Mfg. Co. Inc. | http://www.rheem.com/ | |
| Direct Expansion | Trane | http://www.trane.com | |
| Direct Expansion | York International | http://www.york.com |