| Business | Phone |
| A-1 Air Duct Cleaning 838 Diane St Se, Grand Rapids 49508 | (616) 281-4501 |
| Air Flo Systems Grand Rapids 49503 | (616) 454-2270 |
| American Duct Cleaning 4615 Curwood Ave Se, Grand Rapids 49508 | (616) 538-0640 |
| Enviro Vents Duct Cleaning 2017 Calvin Ave Se, Grand Rapids 49507 | (616) 248-4470 |
| Spring Air Furnace & Duct 3957 Jefferson Ave Se, Grand Rapids 49548 | (616) 534-4936 |
| Sani-Vac Svc 100 Stevens St Sw, Grand Rapids 49507 | (616) 827-0910 |
| Pro Filter Corp 1322 Cedar St Ne, Grand Rapids 49503 | (616) 458-6018 |