| Business | Phone |
| Economy Heating & Air Cond 1408 W Liberty Ave, Pittsburgh 15226 | (412) 563-3900 |
| Ecoquest International 1143 Olivia St, Pittsburgh 15218 | (412) 371-8660 |
| Henry Fry Co 1921 Elmbrook Ln, Pittsburgh 15243 | (412) 279-4520 |
| Indoor Air Safety & Assoc 4776 Frich Dr, Pittsburgh 15227 | (412) 882-6397 |