| Business | Phone |
| Accurate Mechanical Co 4330 E 14th St, Des Moines 50313 | (515) 266-3117 |
| Air-Con Mechanical Corp 3121 Se 14th St, Des Moines 50320 | (515) 243-5500 |
| Baker Group 4224 Hubbell Ave, Des Moines 50317 | (515) 262-4000 |
| Mechanical Equipment Svc Corp 3122 49th St, Des Moines 50310 | (515) 276-9131 |
| Central Iowa Mechanical 204 Sw 2nd St, Des Moines 50309 | (515) 243-8126 |
| Pike Mechanical 111 Se 7th St, Des Moines 50309 | (515) 243-4275 |
| Des Moines Sheet Metal 2250 Delaware Ave, Des Moines 50317 | (515) 288-8484 |
| Sheet Metal Inc 219 New York Ave, Des Moines 50313 | (515) 243-8229 |
| Stroh Corp 5000 Park Ave, Des Moines 50321 | (515) 244-8177 |