| Business | Phone |
| Air Control Products Co 3800 Towpath Trl, Cleveland 44147 | (440) 526-3020 |
| Air Systems Inc 5543 Canal Rd, Cleveland 44125 | (216) 328-1444 |
| Alpha Engineering Inc 20160 Center Ridge Rd, Cleveland 44116 | (216) 956-2944 |
| Ceilcote Air Pollution Control 14955 W Sprague Rd # 250, Cleveland 44136 | (440) 243-0700 |
| Thermal Products Co 1555 Hamilton Ave, Cleveland 44114 | (216) 781-9796 |