| Business | Phone |
| Accutemp Llc 218 Roselle St, Fairfield 6825 | (203) 579-0557 |
| Adams Engineering 1361 S Pine Creek Rd, Fairfield 6824 | (203) 855-0858 |
| Aireze Heating & Cooling Llc 77 Garden Dr, Fairfield 6825 | (203) 367-9897 |
| Brit-Air 9 Eliot St, Fairfield 6824 | (203) 254-0500 |
| Britt-Air Llc 9 Eliot St, Fairfield 6824 | (203) 847-5467 |
| Fairco Air Conditioning 183 Sherman St, Fairfield 6824 | (203) 255-2299 |
| Harry P Carpenter & Sons Fairfield 6824 | (203) 259-8668 |