| Business | Phone |
| A Advantage Heating & Air Cond 8501 Bucyrus Ct 102, Manassas 20110 | (703) 368-7855 |
| Woody's Sudden Svc 9112 Industry Dr A, Manassas 20111 | (703) 369-5528 |
| W & E Heating & Air 8379 Wellington Rd, Manassas 20109 | (703) 368-6204 |
| W & E Htg & Air Conditioning 8749 Wellington Rd, Manassas 20109 | (703) 631-2558 |
| Arctic Sun Heating & Air Cond Manassas 20109 | (703) 331-5655 |
| Blevins Heating & Air Cond 12105 Kahns Rd, Manassas 20112 | (703) 791-5217 |
| Comfort Air 13625 Dumfries Rd, Manassas 20112 | (703) 791-5700 |
| Songlow Heating & Air Cond 10106 Grant Ave, Manassas 20110 | (703) 830-0720 |
| Ross Heating & Air Cond 9100 Church St 101, Manassas 20110 | (703) 335-1284 |
| Redelman Heating & Air Cond 8497 Euclid Ave # 10, Manassas 20111 | (703) 369-3270 |
| R J Wren Heating & Cooling 9423 Katelyn Ct, Manassas 20111 | (703) 369-3318 |
| General Heating Engineering Co 9070 Euclid Ave, Manassas 20110 | (703) 631-2690 |
| Marc's Heating & Ac 9865 Buckner Rd, Manassas 20110 | (703) 335-9254 |