| Business | Phone |
| J B Cain Mechanical Contrs 4315 Delemere Ct, Royal Oak 48073 | (248) 549-2722 |
| Aaa Allservice Mechanical 1902 Crooks Rd, Royal Oak 48073 | (248) 651-8271 |
| Cadieux Mechanical Contr Royal Oak 48067 | (248) 546-8800 |
| Campbell Industrial Contrs 123 E Bloomfield Ave, Royal Oak 48073 | (248) 585-3944 |
| Climatemaster Mechanical Inc 1211 E Lincoln Ave, Royal Oak 48067 | (248) 414-7915 |