Customer Reviews
See why 900+ Bay Area families trust Therma Tech for their HVAC needs.
4.9★ on Yelp
4.9★ · 900+ reviews
18+ Years
Serving the Bay Area
Licensed & Insured
CA License
Satisfaction Guaranteed
100% Promise
What Our Customers Say
Rated 4.9 stars across 706 Yelp and 215 Google reviews
"5 Stars!!! John and his crew were truly amazing. Very professional, patient, and took time to answer all my questions. They went above and beyond."
Nancy F.
3 weeks ago
"Wow, amazing service. Another company said it couldn't be fixed. Therma Tech had it running in ~1 hour. Would definitely recommend!"
James S.
6 months ago
"My service tech was efficient and honest. Other company quoted $18K for full replacement. Therma Tech fixed the fuse — done."
Bruce I.
6 months ago
"SUPER fast response, totally on time. They've been our go-to for 10 years. They have the best and most honest technicians."
Winnie C.
8 months ago
"Called at 5:30 PM on Friday, hottest day of the week. Had a technician on site within 30 minutes. Outstanding service!"
Dan W.
7 months ago
"I now fully understand why ThermaTech has such a fantastic Yelp rating. Thorough $89 Furnace Tune-Up including cleaning and complete examination."
Carl M.
3 months ago
More Happy Customers
"They installed a whole new AC unit in one day. The team was professional, clean, and respectful of our home. Price was fair and they even helped us apply for a rebate."
Patricia L.
2 months ago
"I've used Therma Tech for 5 years now. Annual tune-ups, one repair, and they've always been fair and honest. Never tried to sell me something I didn't need."
Mike T.
1 month ago
"Our furnace died on a cold night and they came out within an hour. The technician was knowledgeable and fixed it quickly. Lifesavers!"
Sarah K.
4 months ago
"Best HVAC company I've ever dealt with. They diagnosed an issue two other companies missed. Saved us thousands on unnecessary replacement."
Robert J.
5 months ago
"From the phone call to the final walkthrough, every step was professional. They explained everything clearly and the pricing was exactly as quoted."
Linda M.
3 months ago
"Installed a heat pump system — the whole process was smooth. Energy bills dropped 40% the first month. Couldn't be happier!"
Tom H.
2 months ago
Ready to Schedule Your Service?
From repairs to full installations — our NATE-certified technicians are ready to keep your home comfortable. Book online or call us.