Green Comfort
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Green Comfort
Your home is unique, so it deserves a unique, high efficiency design from our HVAC Nerd. We don't want to sell you what you don't need, so we like to meet with you to give a free estimate. Green Comfort is a heating, ventilation, and air conditioning (HVAC) company that was founded in 2012 by Sean Gagen.

Sean has been certified by the National Comfort Institute (NCI), North American Trade Excellence (NATE), Building Performance Institute (BPI), as well as trained by the Department of Defense and National Air Balance Council (NABC).
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Our HVAC Nerd, Michael, has completed his NATE Certification, NCI Certification, EPA Certification, and has received his HVAC/R Associates Degree from Riverside Community College. Michael continues training with daily coaching and yearly training retreats with professional HVAC coaching gurus. Sean began his HVAC training over 20 years ago, in the US Army.
A broken thermostat won't tell your furnace to work properly. Make sure it has fresh batteries. You can also try to install a thermostat yourself- you can find them at any home construction store. Too complicated? Want a Nest thermostat? Call us to do that for you! The breaker may have popped. Go outside to your main electrical panel, check to make sure all of the switches are fully switched on.
We know you have a budget, and you have certain things about your home comfort system that really bother you! It's our goal to solve your indoor air problems. Did you know that more than 65% of California homes lose over 35% of their cooling in the attic from leaky ductwork? That means that you are paying to cool and heat your attic!
Michael was very profession and extremely efficient in doing the annual maintenance on our HVAC system. We are very pleased with the continued high quality of customer service offered by Green Comfort. Would highly recommend them to anyone needing HVAC replacement or services. Professional, on time, clean and polite along with top quality work and a reasonable price.
We install ducted and ductless mini splits into residential homes and commercial spaces to keep the home comfortable and save money on utility bills. Many of our customers in Corona and Riverside, CA have seen significant decreases in their utility bills and improvement in indoor temperature comfort.
Reviews (18)
Cynthia Vicuna
Cynthia Vicuna
Dec 05, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
Absolutely wouldn’t use anyone else. Green comfort is on time and Thorough. I love their honesty! I high recommend Green comfort
Service: HVAC maintenance
James F.
James F.
Nov 24, 2021
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The only people to call for your HVAC needs. We encountered a major problem with our HVAC unit. Essentially other companies told us we needed major work that could be up to 30-40 thousand. some said we were S.O.L. We looked throughout yelp and found Green comfort. Michael came out to give us a quote- that was the best value for their quality of work. He was very attentive to follow Covid Protocols. He was extremely throughout and attentive to come up with a solution. He gave us every possible solution with the pros and cons. He was extremely patient and knowledgeable. He gave us honest answers
Tara Hopson
Tara Hopson
Oct 20, 2021
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We were finally forced to replace our 25+ yr a/c furnace system and started with the nightmare parade of proposals from different local heating and air companies. The more people we spoke with the more confusing it became (≧▽≦) The worst part of it was how a proposal would be discounted by thousands of dollars the longer we didn't sign, which is so infuriating. Speaking with Sean was literally like a breath of fresh air. He is extremely knowledgeable in his field, went over the options and recommended what he would put in his house should he be making the decision. And the price was lower
Bob Saedi
Bob Saedi
Sep 19, 2021
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I have had Sean and his crew doing our repairs for years. They are prompt, dependable, and get the job done right the first time. I would highly recommend them to anyone needing a/c repair or service.
Service: Repair HVAC
David Smith
David Smith
Aug 27, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
Great Company! Had a 5-ton unit die in my studio during a high-profile shoot. GC was out that day and i think we installed the next day. Good folks - highly recommend.
Service: Install heating system
Lisa Garner
Lisa Garner
Aug 02, 2021
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Our old air conditioning and heater were barely working last year and we didn't want to go through another winter being cold and summer being hot. Sean was referred to me and he helped get us all set up with a heat pump. The system was from AC Pro and the installation was done by Green Comfort. Their team are experts and are meticulous in their work! Our home is the most comfortable then it's ever been. I can't speak highly enough about their professionalism and attention to detail! I HIGHLY RECOMMEND!
Pamela Louise
Pamela Louise
Jul 29, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
The customer service whether it be in person or over the phone was exceptional. They treated me with respect, professionalism, and kindness.
If I could give them six stars I would.
Services: Repair AC, AC maintenance, Repair thermostat
Jacob Morris
Jacob Morris
Jul 26, 2021
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Positive: Professionalism
Green Comfort fixed my a/c fast and for a great price. They were on time and called ahead just to make sure e we were home. A great overall experience. I would recommend them to everyone who needs a/c work done.
Service: AC maintenance
Buzz Brown
Buzz Brown
Jul 14, 2021
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The Green Comfort team was very knowledgeable and professional. I really appreciated their communication on when they would be arriving and finishing. My 20 year-old system needed a lot of work. Sean thoroughly explained all my options and associated costs. together we decided that a new high efficiency system was the best investment. Wow! What a difference. This new system runs less and cools so much faster and is saving me money every day. Thanks Green Comfort!!
Thomas Cook
Thomas Cook
May 23, 2021
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Sean from Green Comfort has come out twice to fix our old AC, and both times has done a great job and is super quick! Love how they were able to help us on the same day, and have always been upfront on their pricing. Sean doesn't seem to mind taking a little time to explain what's going on and what he needs to do, and I really appreciate it. Don't think you'll get this great of service at such a good price from anywhere else in town.
Lori F.
Lori F.
Jan 29, 2021
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Michael repaired our heating unit, and diagnosed the source of water that had left the filter damp as a probable leak at the roof vent (which it was). He was thoroughly knowledgeable , extremely nice and went out of his way big time to get the needed part that day. The front office folks are equally nice, cost was competitive. I will definitely go with Green Comfort in the future.
Tony I.
Tony I.
Jan 15, 2021
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Great company! Reasonable prices, very honest, knowledgeable and won't try to sell you service you don't need. Would highly recommend...
Duane M.
Duane M.
Aug 29, 2020
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Received a next day appointment, very impressed given the heat wave recently.
Michael showed up, in mask, had booties, very friendly. Explained his troubleshooting and went over my expectations. He found a problem with my ductwork, ( rats chewed the air delivery hoseline) ugh. He ordered the parts and will fix Monday. Fair price, very efficient.
Cameron S.
Cameron S.
Jul 07, 2020
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Called Green comfort to come out and give me an estimate on a complete new A/C system for the house I just bought. Michael came over, spent about 2 hours going through my whole system and told me exactly what the problems were, guy couldn't be more friendly and honest. I decided to go with them for the install but while I was on my 48 hour shift at the fire department my girlfriends parents decided to surprise me and had a system installed paid for by them. I was bummed that I didn't get to use Green Comfort but after the fact, I still had Michael come out and do an inspection on the
Sarah R.
Sarah R.
Apr 28, 2020
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I bought my first home two years ago and figured I probably should schedule a tune up for the air conditioner and furnace. Green Comfort utilized texts/calls for communication before arriving, was right on time, and clearly communicated everything. After working with different contractors for other types of maintenance around the house, this company stood out as my best experience for professionalism. I look forward to continuing using their services in the future and would recommend them to my friends and family.
Amy W.
Amy W.
Jun 25, 2019
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SO happy with the quality of work from Green Comfort. They have worked on 2 of our houses and designed a new HVAC system for our rebuild of our business. Quality work, reliable, trustworthy. Would highly recommend to my friends.
Karen K.
Karen K.
Jun 19, 2019
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Amazing customer service and repair!.I called with an AC that stopped working and they were out the next morning. A few days later it needed additional work and Sean the owner made a special trip out to do a diagnostic and took care of things for us. Been working great and would highly recommend them.
Crystal C.
Crystal C.
Mar 31, 2018
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Sean and his team @ Green Comfort were a amazing! We decided to replace the unit for a more energy efficient model.

The team was amazing, quick, professional, & personable.

With our recent temperature fluctuations, we've used both the heater & AC. The new unit is smaller, uses less energy, but packs a great punch. It works GREAT!!

Added bonus, I can change the temp right from my phone (and I'm the only one with the mobile PW ).

If you're looking for an honest & reliable HVAC contractor - stop looking and call Sean @ Green Comfort.