| Business | Phone |
| A 1 Independent Htg & Cooling 3170 W Monroe St 209, Waukegan 60085 | (847) 336-1525 |
| Air Con Refrigeration & Htg 123 Lake St, Waukegan 60085 | (847) 336-4128 |
| Wayne's Mechanical Svc 10087 W Wyer St, Waukegan 60087 | (847) 623-3120 |
| Trade Line Heating Air Cond 37801 N Frolic Ave, Waukegan 60087 | (847) 623-9639 |
| Bob's Hvac 38532 N Harding St, Waukegan 60087 | (847) 623-2330 |
| Standard Engineers & Contrs 91 Beech Ave, Waukegan 60087 | (847) 662-1444 |
| Robinson Heating & Cooling Inc 2413 Washington St, Waukegan 60085 | (847) 623-7300 |
| Del-Mar Heating & Air Cond Co 237 Edison Ct, Waukegan 60085 | (847) 662-4792 |
| Modern Heating Co 11982 W Wadsworth Rd, Waukegan 60087 | (847) 782-9690 |
| Mc Donough Mechanical Svc Inc 4081 Joseph Ln A, Waukegan 60087 | (847) 244-7451 |
| Jasso Heating 36301 N Green Ave, Waukegan 60087 | (847) 244-4941 |