| Business | Phone |
| A-Adkins Air Conditioning 4902 Pheasant Ridge Rd, Fairfax 22030 | (703) 273-9595 |
| A-Adler Air Conditioning & Htg 3506 Brookwood Dr, Fairfax 22030 | (703) 273-6880 |
| Accurate Air Inc 10001 Blackthorn Ct, Fairfax 22030 | (703) 273-2978 |
| Ace Air Cond & Htg Svc Inc 3171 Spring St A, Fairfax 22031 | (703) 691-0095 |
| Ach Inc 4202 Sideburn Rd, Fairfax 22030 | (703) 591-1420 |
| Aegis Cooling Heating 3912 University Dr, Fairfax 22030 | (703) 385-3599 |
| Air 1 Htg & Air Conditioning 2711 Dorr Ave # F, Fairfax 22031 | (703) 698-9700 |
| B & B Air Conditioning 8400 Hilltop Rd # F, Fairfax 22031 | (703) 560-9444 |
| Bishop Equipment Co Inc 2825 Dorr Ave, Fairfax 22031 | (703) 573-8980 |
| Blue Ridge Heating & Air Cond 10806 Norman Ave, Fairfax 22030 | (703) 691-9653 |
| Carric Assoc 5400 Ashleigh Rd, Fairfax 22030 | (703) 591-1000 |
| A A Rapid Response Plumbing 9419 Braddock Rd, Fairfax 22032 | (703) 978-3010 |
| A Action Heating & Ac Fairfax 22032 | (703) 323-0649 |
| Garneski's Air Conditioning 3905 Railroad Ave 102b, Fairfax 22030 | (703) 359-8957 |
| Hava Tech Inc 11021 Braddock Rd, Fairfax 22030 | (703) 278-5455 |
| Keenan Heating & Cooling 10629 Main St, Fairfax 22030 | (703) 385-9200 |
| Marvin C Cowherd Air Cond Inc 2711 Dorr Ave M, Fairfax 22031 | (703) 573-0006 |
| Precision Air 8730 Arlington Blvd, Fairfax 22031 | (703) 845-1111 |
| Southern Air Inc 4094 Majestic Ln, Fairfax 22033 | (703) 817-0588 |
| Tms Inc 28 Industrial Park Cir R, Fairfax 22030 | (703) 591-1676 |
| De Vall & Co Svc Inc Fairfax 22032 | (703) 323-3950 |
| Simpson Heating & Cooling 5609 Sandy Lewis Dr # D, Fairfax 22032 | (703) 323-6003 |