| Business | Phone |
| T & K Ely's Plumbing 8744 Dolphin St, Portage 49024 | (269) 998-4359 |
| Service Tech Htg & Cooling Svc 5175 Valk St, Portage 49002 | (269) 327-3726 |
| Rjo Mechanical Inc 832 Lenox Ave, Portage 49024 | (269) 324-3363 |
| Mechanical Testing Svc 5919 S Sprinkle Rd, Portage 49002 | (269) 324-1459 |