| Business | Phone |
| Area Mechanical Inc 821 1st Ave, Rockford 61104 | (815) 964-2070 |
| Seaberg Heating & Air Cond 521 N London Ave, Rockford 61107 | (815) 962-1500 |
| Sam Kerley Heating & Cooling 6375 11th St, Rockford 61109 | (815) 874-2522 |
| Richard J Bowers Co 2013 Harrison Ave, Rockford 61104 | (815) 399-8831 |
| Rockford Heating & Air Cond 1618 Magnolia St, Rockford 61104 | (815) 965-9494 |
| Norstar Heating & Cooling 122 N 2nd St, Rockford 61107 | (815) 398-1969 |
| Gilley's Sheet Metal 4465 Prairie Rd, Rockford 61102 | (815) 962-1927 |
| Miller Engineering Co 1616 S Main St, Rockford 61102 | (815) 963-4878 |
| M-C Heating & Air Conditioning 4815 Hydraulic Rd, Rockford 61109 | (815) 874-9089 |