“I have a foreclosure home up in Morton. The hvac system was not working. I called and they had a bid sent over to me within 30 minutes for a diagnosis of the system. And then they were very quick at g…”
“My grandfather’s heat pump went out one the first 90 degree day of the year. He himself is 87 years old. I called Mills because our usual favorite Scott’s was out a week. Mills was recommended to me b…”
“We were in need of a new HVAC system at our Airbnb rental. I called 8 different companies in Centralia and Mills NW was the only one who answered. The receptionist was very kind and helpful and was ab…”
“Went with these guys NW heating and cooling thinking it was a great idea because I could purchase 2 yearly services at one time. My first scheduled appointment was scheduled 3 weeks out which I was fi…”
“We will NEVER ever use this company again. We had problems with our heat pump they came 2 hours late and couldn't find anything wrong. Came a second time 2 hours late and said it was a panel that need…”
Mills Nw Heating Cooling provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Chehalis, WA.
Mills Nw Heating Cooling has a 4.3 out of 5 star rating based on 28 Google reviews.
Yes. License number: MILLSNH782D5. Status: ACTIVE. You can verify on the Washington Department of Labor & Industries (L&I) lookup at https://secure.lni.wa.gov/verify.
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Licensing verified 2026-04-21. Reviews refreshed 2026-04-21.
Licensing data: Washington Department of Labor & Industries (L&I) · Company data: verified business records + Google Business profile
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