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HVAC Heating & Cooling services available 24/7
Dennis's Heating & Cooling is the Bay Area's expert heating and cooling company. We offer furnace and air conditioning services… read more
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Heater Installations
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Highlights from the Business
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Certified professionals
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29 years in business
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Speaks Spanish
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Free estimates
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24/7 Availability
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Committed to quality results
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Services Offered
Verified by Business
Heater Repair in 10 reviews
A/C Repair in 3 reviews
Commercial Services in 2 reviews
Air Duct Repair in 1 review
Heater Installation in 5 reviews
Emergency Services in 3 reviews
Gas Furnace Repair in 2 reviews
Gas Furnace Installation in 1 review
Review Highlights
“I had an issue with my wall heater, and I could not have found a man with more integrity to do the job.” in 2 reviews
“As other reviewers have said, he truly is a master of his craft and of the 20 or so calls I made to get my heater fixed I found the perfect guy.” in 3 reviews
“I would like to take this opportunity to say thank you to Dennis and Moses for the amazing job they did repairing our heater.” in 2 reviews
About the Business
With over 29 years of HVAC experience, Dennis provides comprehensive heating and air conditioning repair services all throughout the Bay Area. No matter what kind of issue you encounter, whether it’s leaking water, insufficient cooling, or a strange noise, contact Dennis and his staff and they will help. Dennis's Heating & Cooling is the Bay Area's expert heating and cooling company. We offer furnace and air conditioning services in and around the Bay Area. Please, feel free to contact us for more information on our services, products, and company.
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Overall rating
25 reviews
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- Adam C.San Francisco, CA5207Feb 4, 2023
We decided to upgrade to a Nest thermostat to our older furnace, however the wiring was not as expected and we ended up with a cold house. I reached out to Dennis and he came first thing the next morning and sorted us out right away, now our home is warm again. Dennis is a great guy and an expert professional - we highly recommend his services for your HVAC needs!
Helpful 0Thanks 0Love this 0Oh no 0 - Sapioamoa S.San Francisco, CA7021May 14, 2024
Dennis is a great repairman. Took a look at my gravity heater and found the problem and had it fixed quickly.
Thank You so much!Helpful 0Thanks 0Love this 1Oh no 0 - Amy F.San Francisco, CA02423Sep 29, 2023
Dennis is quick, professional and kind. I used his service twice now-back to back years for a 20+ year old furnace. This small business is run properly with customer service focus backed by family values and decades of experience.
If you want prompt service, efficient and effective work while dealing with reliable and timely responses, this is the place to consider.Helpful 0Thanks 0Love this 0Oh no 0 - Cat C.San Francisco, CA04Aug 4, 2024
I am very grateful to have found Dennis to fix an older Day and Night (Carrier) heater while I was in town for the weekend. After my initial troubleshooting thinking it might be the flame sensor, I called Dennis, described what I saw/heard and sent him a photo. He suggested a few things to try but ultimately it needed a new circuit board which despite a mix up from his usual supplier he was able to quickly track down a new one within a few hours (he told me he keeps all the parts he needs on board his truck but he noticed when he pulled out the "new" circuit board from the box it was actually used and he worked hard to try to get me another one asap which was very helpful as I told him I was scheduled to leave town). Dennis really knows his stuff having been in the business 30+ years, but what stood out to me is that he is an overall calm and clear communicator, timely, and has simple upfront pricing- he shared potential options of what the problem might be and associated price - I appreciate this so I don't feel trapped into paying for a potentially overpriced repair/part/service on the spot and the tech is saying subtle things to instill fear as my machine is splayed open like some other HVAC companies I've worked with. He doesn't try to upsell you on anything you may not need and is willing to explain what he is doing for those who are curious like me. If you're looking for an efficient local pro who will fix your HVAC right the first time please give Dennis a call.
Helpful 0Thanks 0Love this 0Oh no 0 - Daniel G.San Francisco, CA09Jan 10, 2024
Dennis is legit. What I thought might be new gas furnace installation, turned into a simple problem fixed in 20 minutes. Honest, experienced, knowledgeable and on time.
Helpful 0Thanks 0Love this 0Oh no 0 - Bryant J.San Jose, CA035Jan 31, 2024
I would like to take this opportunity to say thank you to Dennis and Moses for the amazing job they did repairing our heater. They were on time, never delayed or late, and very professional. Both of these men were extremely competent and confident in their craft. I appreciate how fast they identified the issue and how quickly they resolved the issue. The price was very fair for the services provided. I felt as if I was dealing with long time friends and family. Without pause or delay I would highly recommend this business to anyone in need of heating and cooling service. Great company!
Helpful 0Thanks 0Love this 0Oh no 0 - Sarah-Beth Z.Alamo Square, San Francisco, CA21Dec 13, 2023
We had 2 old wall heaters in our in-law apartment that we asked Dennis to diagnose. He was able to fix one issue on the spot and gave a quote to fix the second one. He was transparent, letting me know the best strategy to ensure safety and efficiency. He didn't push for upgrades although when prompted, he agreed that our furnace wasn't the best quality. I'll be calling Dennis to optimize our heating soon!
Helpful 0Thanks 0Love this 0Oh no 0 - Laura F.San Francisco, CA06Jan 3, 2024
I had an issue with my wall heater, and I could not have found a man with more integrity to do the job. He was accommodating with my schedule, arrived promptly, quickly diagnosed the problem, and safety checked everything. He even made adjustments to save me costs with gas usage, and is an overall professional and kind individual. He will not overcharge you and you'll be glad you gave him a call!
Helpful 0Thanks 0Love this 0Oh no 0 - Cecilia O.San Diego, CA3823Jan 3, 2024
Dennis was great at fixing our broken furnace at the end of the holiday weekend. He came out super quickly, was friendly and professional, quickly identified the source of the problem and fixed it, and went above and beyond (even changed the batteries on our beeping carbon monoxide alarm we hadn't been able to find!). We are so happy to have a warm house again!
Helpful 0Thanks 0Love this 0Oh no 0 - Anant H.New York, NY3258Nov 18, 2022First to Review
Dennis is a true master of his craft and some proprietor of his business. I was lucky to catch him when my furnace started acting up; he managed to make it over the same day.
He's a skilled listener, both to his customers and the various sounds an HVAC system might make. He fixed my issue, and made sensible advice on what to invest in (and not invest in). He also takes pride in details, and found some additional loose ducting downstream of the furnace and taped it up to improve air loss. Left furnace in better shape than before it broke.
Highly recommended.Helpful 0Thanks 0Love this 0Oh no 0 - Kristopher S.Potrero Hill, San Francisco, CA01Feb 17, 2024
Called Dennis because my wall heater was not working. I couldn't figure out what was wrong and was frustrated. Dennis was able to figure out the problem over the phone and walked me through the steps to fix it. He was very knowledgeable and nice. My heater is working again. Thank You Dennis! Highly Recommend!
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