| Business | Phone |
| Kissinger Heating & Air Cond 382 N Lemon Ave, Walnut 91789 | (909) 595-0636 |
| Weatherite Service Corp 21211 Commerce Point Dr, Walnut 91789 | (909) 598-8900 |
| Aaa Granger's Heating & Air Walnut 91789 | (909) 595-8603 |
| Acs Walnut 91789 | (909) 468-5616 |
| Best West Air 3820 Valley Blvd, Walnut 91789 | (909) 594-8814 |
| E Reyes Co 20758 Carrey Rd, Walnut 91789 | (909) 468-5803 |
| Go Jet Air Systems 370 Paseo Sonrisa, Walnut 91789 | (909) 598-0855 |
| Hempel Air Conditioning 726 Bridle Trail Rd, Walnut 91789 | (626) 964-3167 |
| Keum Sung Cooling 20218 Red Cedar Dr, Walnut 91789 | (323) 737-8282 |
| Metz Air Conditioning & Htg Washington St, Walnut 91789 | (909) 594-6110 |
| Metz Air Control Walnut 91789 | (909) 595-8802 |
| Ric's Heating & Air Cond 20125 Candleflame Ct, Walnut 91789 | (714) 490-0702 |