| Business | Phone |
| Atc Residential 1430 S Grand, Covina 91723 | (626) 967-0706 |
| Pro Comfort Air Systems 580 N Azusa Ave # 5, Covina 91722 | (626) 915-4876 |
| Aaah Free Estimates 16815 E Alcross St, Covina 91722 | (626) 443-7722 |
| M & J's Heat & Air Cond Po Box 2425, Covina 91722 | (626) 332-5646 |