HVAC reviews in Petaluma, California

Great customer service. Quick and clean A/C unit install.

Rich was on time and respectful. The A/C split system works great for our 2 story house. Thanks for the suggestion.

They were wonderful! Fast, efficient, and fairly priced. Saved us from a cold winter! 👍🏻

Best is the business, the hardest working guys who do incredible work, couldn’t recommend them enough

Best HVAC tech around. Prompt, courteous, reliable and best prices.! I have used them over and over for my homes and highly recommend them!

Tony and Zach Milano are the absolute best at what they do. I recommend them 100%. They are both honest, intelligent, hard working men. If you hire them for heating or air you will be very satisfied by the work they do.

We have hired Zack for both a repair and a new install of a heating system. They were very professional and showed up on time and completed both projects on time and for a good price. He was able to solve a long time issue of my furnace getting blown out during high wind events that others could not solve. We will definitely use them again in the future.

Thank you Green Core! Called during summer due to broken AC on a 100* day. They showed to the house less than a couple hours from the phone call and managed to fix the unit in no time. I was interested in a quote for an upgrade but they instead gave me their honest opinion that we’re still many years away from new equipment instead of making a sale.

I’ve since used Green Core at all my properties. Zach and Tony are both genuine, reliable, honest people and a pleasure to talk to. Dealing with other HVAC companies has always felt slimy, but these guys are straight-up, will always give you the truth, and their price was impossible to beat!

The crew was very professional and respectful. They completed the installation as promised. Thanks for a warmer, more efficient heating and AC system.

Green Core is the real deal. Excellent, prompt & courteous service with fair pricing and great workmanship. A company that can be trusted. Highly recommended!

Richard was absolutely amazing to work with. From the moment he arrived, he was professional, friendly, and clearly knew exactly what he was doing. He took the time to explain the issue with my system in a way that actually made sense which I loved

These guys are total professionals. They are experts and did a fabulous job removing our old gas furnace, getting rid of asbestos, installing a new heat pump, new duct work, new electrical work and they moved our water heater (as per our request.). Our home is heating beautifully. They’re facilitating a federal grant for us— as they partner with QuitCarbon.

Wow Rich was a rockstar! He treated me and my home with the upmost respect. He is such a great person to deal with and was funny as well, what a bonus! I will definitely be recommending this company to all my family and friends!

I had a great experience with Green Core Heating & Air when they serviced my home in Petaluma, CA 94952. Zack was professional, knowledgeable, and easy to work with from start to finish.

The service was fast and efficient, everything was explained clearly, and the work was done right the first time. I was also very happy with the pricing — fair, transparent, and no surprises.

If you need reliable heating and air service in Petaluma 94952, I highly recommend Green Core Heating & Air. 5-star experience all around.

Tony came over, looked at my heater, and gave me a quote same day. They were very affordable, and did an excellent job with my new furnace. Couldn’t be happier with Green Core. Very professional service.

Tony and Zach were extremely helpful in giving us options for heating in our home. Their team of guys were professional and well trained, completing the job in a timely and orderly fashion. We are very happy with our new system and would highly recommend them to anyone looking for an honest HVAC company!

I was very impressed by Zach and Tony. They were quick and efficient at getting out a/c hooked up and running, even in the middle of a heat wave. Both made sure to cover their shoes when coming into our home and wash their hands to assure no mess was brought inside. It was the attention to the little details that I really appreciated. Zach then took the time to explain the best way to efficiently run our a/c, which our bill thanks him for!

If I could give Green Core more than five stars, I absolutely would. Zach and Tony are professional, honest, and incredibly reliable. Their pricing is fair, communication is clear from start to finish, and the quality of their work is outstanding. The attention to detail truly sets them apart. I would hire them again without hesitation and recommend them to anyone looking for top-tier service.

I don't give reviews like this lightly, but this company truly deserves it. I've worked with them for nearly 9 years, and the consistency, integrity, and quality they deliver is unmatched. They are incredibly knowledgeable, honest to the core, and always focused on what's actually best for the customer—not upselling, not cutting corners, just doing things the right way.
They take the time to explain every option clearly, offer fair and competitive pricing, and stand behind their work 100%. In an industry where trust matters everything, they've earned mine year after year. If you're looking for an HVAC company that combines expertise, transparency, and exceptional service, this is it. Absolute gold standard.

This was such a pleasant experience! From the initial phone to the finished product. Zach took my call and was able to get his technician out the next day! Rich was very knowledgeable and was able to get my system repaired the same day. Thank you Greencore

Can’t say enough good things about Rich. His expertise was impeccable and his knowledge of our equipment was astounding. He kept my mind at ease by keeping me informed the entire service call. Now I have heat and couldn’t be happier, thank you Rich!!!!!