| Business | Phone |
| J F Menzia & Sons 12020 W Ripley Ave, Milwaukee 53226 | (414) 257-2384 |
| Bassett Mechanical Inc 3720 N 124th St M, Milwaukee 53222 | (414) 536-3500 |
| Brenner Corp 2344 S Burrell St, Milwaukee 53207 | (414) 482-2500 |
| Butters-Fetting Co Inc 1669 S 1st St, Milwaukee 53204 | (414) 645-1535 |
| Csl Mechanical Systems 3823 N 87th St, Milwaukee 53222 | (414) 463-0450 |
| Debelak Mechanical Systems 11104 W Becher St, Milwaukee 53227 | (414) 422-0781 |
| Downey Inc 2203 W Michigan St, Milwaukee 53233 | (414) 933-3123 |
| Enertec 9350 N 107th St, Milwaukee 53224 | (414) 365-0500 |
| Enserv Mechanical Inc 8835 N Lodgewood Rd, Milwaukee 53217 | (414) 277-7800 |
| H Kubenik Mechanical 2101 S 37th St, Milwaukee 53215 | (414) 385-0655 |
| Illingworth Corp 615 S 89th St, Milwaukee 53214 | (414) 476-5790 |
| J H Mechanical Inc 4004 S 57th St, Milwaukee 53220 | (414) 327-0830 |
| J M Brennan Inc 2101 W Saint Paul Ave, Milwaukee 53233 | (414) 342-3829 |
| K & W Mechanical Svc 8900 N Arbon Dr, Milwaukee 53223 | (414) 362-0639 |
| Winkler Mechanical Inc 7303 W Bradley Rd, Milwaukee 53223 | (414) 354-7100 |
| W H Jacklin Inc 8835 W Heather Ave, Milwaukee 53224 | (414) 355-6800 |
| Superior Mechanical Insulation 8634 N 56th St, Milwaukee 53223 | (414) 434-1350 |
| Rockwell Mechanical 3315 S Taylor Ave, Milwaukee 53207 | (414) 727-7013 |
| Rbi Mechanical Contractors 11601 W North Ave, Milwaukee 53226 | (414) 247-1333 |
| Pro Tech Mechanical 7826 W Florist Ave, Milwaukee 53218 | (414) 727-7464 |