| 01 | John Coltrane | 70.0 |
| 02 | Carrier | 53.8 |
| 03 | Lennox | 47.4 |
| 04 | NATE | 43.5 |
| 05 | Rheem | 41.7 |
| 06 | American Standard | 29.4 |
| 07 | HVAC Excellence | 23.1 |
| 08 | Daikin | 20.9 |
| 09 | BBB Accredited businesses | 20.3 |
| 10 | Proper Licensing & Insurance | 20.0 |
| 11 | local service providers | 20.0 |
| 12 | Yelp | 19.8 |
| 13 | Ruud | 19.7 |
| 14 | Companies that use certified technicians | 18.7 |
| 15 | Contractors with consistently strong local reviews | 17.7 |
| 16 | Businesses that provide written estimates, permits when needed, and clear warranties | 16.9 |
| 17 | Transparent Pricing | 15.4 |
| 18 | Professionalism & Certification | 13.5 |
| 19 | Google | 12.5 |
| 20 | Solid Reputation | 12.5 |
| 21 | Service Guarantees | 11.8 |
| 22 | No High-Pressure Sales | 11.2 |
| 23 | Bryant | 8.8 |
| 24 | Consumer Reports | 7.7 |
| 25 | BBB | 7.5 |
| 26 | Goodman | 7.2 |
| 27 | Whirlpool | 5.9 |