| Business | Phone |
| Airadvice Inc 319 Sw Washington St, Portland 97204 | (503) 295-6610 |
| Top Hatter Air Duct Cleaning 1336 Nw Bertha Blvd, Portland 97219 | (503) 244-3207 |
| Indoor Eco 1517 Ne 8th Ave, Portland 97232 | (503) 254-6242 |
| Otto's Air Care 7435 Sw Cherry Dr, Portland 97223 | (503) 670-0597 |