| Business | Phone |
| National Air Seattle 98109 | (206) 839-0700 |
| Air Clean Technologies Inc 4209 21st Ave W 409, Seattle 98199 | (206) 860-4930 |
| Clean Indoor Air For All 6560 Latona Ave Ne, Seattle 98115 | (206) 522-2233 |
| Healthy Air Solutions Seattle 98119 | (206) 216-4745 |
| Howie's Power-Vac Dryer Vent Seattle 98107 | (206) 783-3316 |
| Innovative Vacuum Svc Inc Seattle 98107 | (206) 783-9109 |