| Business | Phone |
| Affordable Radon & Mold Sltns 2430 Knollwood Dr, Indianapolis 46228 | (317) 291-5888 |
| Affordable Radon Solutions 4849 Central Ave, Indianapolis 46205 | (317) 283-5888 |
| Williams Environmental Control 7113 Eagle Rd, Indianapolis 46278 | (317) 852-8589 |
| Radon Technology Co Indianapolis 46240 | (317) 574-1854 |