| 01 | Energy Star | 42.0 |
| 02 | Local ENERGY STAR installer-directory contractors | 30.0 |
| 03 | Endless Energy | 25.0 |
| 04 | NATE | 23.1 |
| 05 | ACCA Quality Assured contractors | 23.1 |
| 06 | ENERGY STAR participating contractors | 23.1 |
| 07 | Lennox | 20.9 |
| 08 | Association of Chartered Certified Accountants | 20.3 |
| 09 | Contractors that specialize in heat pumps | 20.3 |
| 10 | Elephant Energy | 19.2 |
| 11 | Daikin | 18.4 |
| 12 | Carrier | 18.3 |
| 13 | John Coltrane | 17.8 |
| 14 | American Standard | 9.4 |
| 15 | Rheem | 8.8 |
| 16 | Mitsubishi | 8.1 |
| 17 | GreenSavers | 7.9 |
| 18 | Home Energy Medics | 7.7 |
| 19 | AZ Energy Efficient Home | 7.5 |
| 20 | Aire Serv | 7.3 |
| 21 | Home Performance with ENERGY STAR | 7.1 |
| 22 | Angi | 7.0 |
| 23 | Yelp | 6.9 |
| 24 | Consumer Reports | 6.8 |
| 25 | Mitsubishi Electric Zoned Comfort Solutions | 6.2 |
| 26 | Bryant | 5.6 |
| 27 | ARS/Rescue Rooter | 5.4 |
| 28 | Jutt Brothers HVAC | 5.3 |
| 29 | Robbins Heating & Air Conditioning | 5.1 |
| 30 | Elder Heating and Air | 5.0 |