| Business | Phone |
| Precisionaire Inc 1720 E Deer Valley Rd, Phoenix 85024 | (623) 580-1644 |
| Commercial Systems Analysis 10443 N Cave Creek Rd # 207, Phoenix 85020 | (602) 997-8938 |
| Environmental Testing & Blnc 321 W Hatcher Rd # 202, Phoenix 85021 | (602) 861-1458 |