| Business | Phone |
| Action Heating & Air Cond 8511 W Snoqualmie Valley Rd Ne, Carnation 98014 | (425) 788-0985 |
| Four Seasons Heating & Cooling 4721 Tolt Ave, Carnation 98014 | (425) 888-6937 |
| Heat Transfer Co Inc 34405 Ne 16th St, Carnation 98014 | (425) 885-3247 |