| Business | Phone |
| Jacob's Ladder Heating & Cool 24520 Radclift St, Oak Park 48237 | (248) 967-4263 |
| A K Refrigeration Htg & Cool 14290 Labelle St, Oak Park 48237 | (248) 544-3615 |
| Alliance Air Conditioning 20800 Hubbell St, Oak Park 48237 | (248) 968-7400 |
| At-Ease Heating & Cooling Inc 10350 W 9 Mile Rd, Oak Park 48237 | (248) 890-1182 |
| Tri-County Heating & Cooling Oak Park 48237 | (248) 968-4888 |
| Soms Indoor Air Quality 13200 Capital St, Oak Park 48237 | (248) 547-1890 |
| Crown Heating & Ac Inc 24617 Roanoke Ave, Oak Park 48237 | (248) 541-6333 |
| Cullinan Heating & Cooling 23520 Rensselaer St, Oak Park 48237 | (248) 398-0359 |
| Oak Park Heating & Cooling Po Box 37271, Oak Park 48237 | (248) 722-5548 |