| Business | Phone |
| Air Cleaning Specialists 5240 Commerce Cir # B, Indianapolis 46237 | (317) 881-4976 |
| Bisco Systems 6234 N Raceway Rd, Indianapolis 46278 | (317) 858-9141 |
| Bisco Systems 7711 N Raceway Rd, Indianapolis 46278 | (317) 876-1551 |
| Hedback Quality Air 5779 Park Plaza Ct, Indianapolis 46220 | (317) 915-9083 |
| Slade Associates Inc 8014 E 45th St # 1, Indianapolis 46226 | (317) 545-1900 |
| Kennedy Marshall Filtration Co 2438 N Shadeland Ave, Indianapolis 46219 | (317) 358-4372 |