
Serving Portola Valley, CA and surrounding areas
Angi Approved
In business since 1962
Free estimates
Emergency services offered
"watch out - they charge a service fee for quotes"






Serving Portola Valley, CA and surrounding areas
Angi Approved
In business since 1962
Free estimates
Emergency services offered
"watch out - they charge a service fee for quotes"





Serving Portola Valley, CA and surrounding areas




Serving Portola Valley, CA and surrounding areas
Angi Approved
In business since 2003
Free estimates
Emergency services offered
"We had a wonderful experience with Comfort Energy! The service person, whose name was Chance, did a thorough evaluation of the problem with a focus on saving us as much money as possible, to either repair or replace our 30-year-old heat furnace. He quickly determined that our inlet filter was too dense (it was a Merv 11 and should have been a Merv 8) and that that was probably causing the heater to go off an on every 5-10 minutes. He then tested and confirmed his hypothesis. He also performed a CO test to make sure there wasn't anything more serious going on. Finally, he gave us a good idea of replacement options, which we should probably do before the next Winter, but not necessarily right away. All in all, this is exactly the kind of assessment we needed, and it cost orders of magnitude less than what was estimated by the first service company we had come out. Chance was great, and Comfort Energy is our go-to for heating and cooling service and/or installation from now on."





+12

Serving Portola Valley, CA and surrounding areas
Angi Approved
In business since 1981
Warranties offered
Customers say: Super punctual
"The crew from Albert Nahman did a great job from start to finish. The project was to replace the original ductwork in our 60 year old house. Tom provided excellent advice for the estimate then Bryan’s crew did the job, 2 days, within a week of my acceptance of the proposal. Great work."





+73

Serving Portola Valley, CA and surrounding areas
Angi Approved
In business since 2006
Free estimates
Offers commercial services
"Great team! Mark, Sergii and Pavel replaced my furnace and installed an AC. It was a real pleasure to work with them. Mark listened carefully and provided several options for me to choose from. He was also flexible on scheduling the work to match my family needs. Sergii and Pavel performed the installation exactly as planned, kept the house clean, and payed a lot of attention to the aesthetics of the visible parts of the system. They explained to me where they'd run the lines, what were the options and why they preferred one over the other. I'm very happy with the choice of brand and model and with the installation. The team really cares about their customers. Thank you!"

Serving Portola Valley, CA and surrounding areas
Angi Approved
Super Service Award Winner
In business since 1991
Free estimates
Emergency services offered
"Very well!"





+58

Serving Portola Valley, CA and surrounding areas
Angi Approved
In business since 2003
Free estimates
Emergency services offered
"They sent over a knowledgeable technician who was polite and professional. He was able to diagnose exactly what the problem was and fix it. "





+27

Serving Portola Valley, CA and surrounding areas
Angi Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"I was extremely impressed with the service provided by Air Sharks, who replaced my aging furnace and damaged heat ducts. Elizabeth provided a detailed explanation in a friendly, professional and understandable way. Pricing seemed reasonable, and was 25% below a previous estimate. Daniel and his crew did a fantastic job removing and replacing the new furnace and the duct system in a very tight crawl space. They left the furnace looking absolutely beautiful and clean. I highly recommend them"





+22

Serving Portola Valley, CA and surrounding areas
Angi Approved
In business since 2025
Free estimates
Credit card accepted
"The Comfort Zone team earned their five star rating on my projects! They were efficient and responsive, solving my heating and cooling needs skillfully and effectively. I had a second story that wasn’t getting enough a/c - Bobby came up with a creative and cost-effective solution and now I sleep soundly upstairs! These guys are a great choice and a pleasure to work with. "

Serving Portola Valley, CA and surrounding areas
Angi Approved
Super Service Award Winner
In business since 1953
Free estimates
Emergency services offered
"He came for our heater tune up. He explained to me how the furnace works and what he was going to do. Once the job finished he told me the repair to be done: to change the red sealer on the exhaust pipe to the proper blue sealer. He gave me the amount expected to pay for it and how long it should take. He is very polite and professional. "

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