| Business | Phone |
| Absolute Comfort 9026 Highway 39, Klamath Falls 97603 | (541) 883-8821 |
| Adams Air Conditioning & Htg 6716 Jake Rd, Klamath Falls 97601 | (541) 884-2391 |
| Basin Hvac Heating/Air Cond 312 S Spring St, Klamath Falls 97601 | (541) 884-3798 |
| Don Hall Mechanical Contr 1538 Hope St, Klamath Falls 97603 | (541) 882-4121 |
| Klamath Natural Gas Svc 5140 Glenwood Dr, Klamath Falls 97603 | (541) 882-2345 |
| Metal Masters 4168 Washburn Way, Klamath Falls 97603 | (541) 883-3237 |
| Quality Aire Care Inc 2795 Anderson Ave # 14, Klamath Falls 97603 | (541) 884-3704 |
| Seasons Change Llc 3304 Crosby Ave # 1, Klamath Falls 97603 | (541) 273-0596 |