Green Air Heating and Air Conditioning

★★★★★ 4.5 / 5 (88)
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: 3953 Industrial Way, Concord, CA 94520
: (925) 284-7336
: https://www.gogreenair.net

Company Overview

In Concord, CA, Green Air Heating and Air Conditioning, Inc. provides professional HVAC services, which include AC installation, AC repair, furnace repair, and air conditioning repair. We focus on ductless mini splits, indoor air quality solutions, and heater repair. As a reputable HVAC and electrical company, we also offer EV charger installation, whole-home generators, electrical upgrades, SPAN panels, and Tesla Powerwall installation. Our team promotes energy efficiency with solar panel installation, electrification services, and microgrid planning to build self-sufficient homes powered by clean energy.

We have been electrifying and decarbonizing homes and businesses. We strive for low carbon footprints has allowed us to stay ahead of title-24, CARB regulations, and utilize low GWP refrigerants like CO2. Our aim for the last 17 years has been reducing CO2 impact on our planet by partnering with environmentally aware clients. We all have a part in climate change; our goal is to collaborate with those who share our vision for a lower carbon impact. This can only happen when we agree on our responsibility to ensure a sustainable future for humanity. Our company delivers solutions to help us all play our role in restoring our relationship with Mother Earth.

Whether it's roofing, solar, or HVAC, Green Air is the leading Energy Solutions Company.

Recognized as a 2016 Top 500 US Solar Contractor by Solar Power World Magazine. Nicholas Donzelli has been installing HVAC, solar, and radiant systems. Let him and his skilled team work with you to develop a unique solution that fits your home and budget.

Business Services

  • HVAC installation or replacement
  • HVAC system repair
  • HVAC system maintenance
  • Add to existing system
  • Add solar panels
  • Solar panel cleaning
  • Solar system installation
  • Solar rooftop panel installation
  • Solar shingle installation
  • Solar system maintenance

Business Location & Hours



Mon:8:00 AM - 4:00 PM
Tue:8:00 AM - 4:00 PM
Wed:8:00 AM - 4:00 PM
Thu:8:00 AM - 4:00 PM
Fri:8:00 AM - 4:00 PM
Sat:Closed
Sun:Closed

Recommended Customer Reviews

Kevin D.
★★★★★

Our AC went out as we enter a major heat wave. Not good. They were referred with high regards from a friend and came by same morning. Very friendly Technician, quickly diagnosed the issue, had a replacement part in his van, and had the part in super fast. We are back in cool ac on a hot day and loving it. Great service and will call for future needs. Hopefully they're ready to grow with all these great reviews!!

Stephen P.
★★★★★

When we couldn't get our heat pump system working, we called the next available contractor that worked on heat pumps. They couldn't fix it, and neither could the next three HVAC contractors that came out. I finally found Nick with Green Air HVAC, and in a brief conversation, I could see that he was both knowledgeable of these systems and had the intelligence to solve multi-faceted system issues. Nick came out, and he and his team fixed issues on three air handler units in two hours' time. Thanks Nick!

Yvonne G.
★★★★★

Green air were terrific to work with
We had Tesla batteries installed for solar back up
Very knowledgeable and professional
Were respectful and courteous
Arrived and completed job on time
These guys are a great team and a pleasure to work with
Not to exclude the office staff who helped me with Pge website and applications for rebates
Marquisha has the patience of a saint :)

Ki V.
★★★★★

We hired Nick's team to do solar, power wall, roofing, HVAC, and upgrade electrical work. They were incredibly efficient and effective. Nice guys and very professional. Given how smooth the whole process was, I honestly cannot imagine having all those projects done by anyone else.

Jeanie K.
★★★★★

Green Air should be your choice for solar and air conditioning needs. They are an absolute pleasure to work with. All the stereotypes about contractors do not apply here. Green Air gets the work done on time, in budget, and the final installation will exceed your expectations.
Nick uses his professional knowledge to make improvements your wouldn't even know to ask for. He takes full responsibility for even tiny issues, and will not just drop unfinished or unsatisfactory aspects in your lap. As other reviewers have mentioned, he stays on top of current technology and will offer the best possible solution for your home.

In 2018, I was looking to increase my solar generation and also to add air conditioning to our home. Our home has radiant heat and no air ducts, so A/C was not a simple task. I had multiple contractors out for both jobs. Nick was the only one able to do both. Because our A/C situation was not straightforward, many companies refused to even bid or suggest a solution. Of the ones that did, we had a real variety - a couple wanted to add ducts and do HVAC. A couple suggested mini-splits, which are more power efficient, but don't look great. Nick's solution for A/C was by far the best - we ended up using mini-splits that are hidden in our wall. Mini-splits provide A/C only to the rooms where we need it, thus saving a lot on power load. And because Nick was able to embed the units in our walls, we don't have any equipment visible, so they are much more aesthetically pleasing that a old-style mini-split. The technology for these was new, but was offered by a Japanese company with a long history in A/C technology (Daikin). We've been using them for a year and could not be more delighted.

For the solar, Nick offered a competitive price and technology. Because he has a background in roofing, he's super careful and knowledgeable. You can trust him not to make mistakes that will cause you to end up with leaks.

Maybe the best thing Nick did for us was to suggest something we hadn't even considered - Powerwalls. Nick suggested them adding them to our system. Nick was helpful in explaining how the tax incentives and SGIP program reduced the final cost less than half of the sticker price. We decided to go ahead with them, and are so happy we did. In the last year, power has been cut to our area five different times. I only know that the power was cut because my neighbors told me and because the Powerwalls send me a message letting me know they are providing power to my house. Each of the five times power has gone out, the Powerwall has taken over seamlessly. We have full electricity and internet. PG&E has warned they might need to cut power again this week due to fire risk. I am so thankful to Nick's foresight in suggesting the Powerwalls as part of our solution.

Finally, Nick and his team are so pleasant and easy to work with. Usually when contractors are working in your home, you wake up every morning with a little bit dread. Not Green Air's team - they are delightful, respectful, and actually nice to have around.

Kelby H.
★★★★★

Such a great group of guys. Very transparent and quick, high quality work. The owner, Nick, came for my intial estimate and helped me understand everything. Anytime I have an issue, Nick has personally came out the same day to check on the system to make sure everything is working properly. I highly recommend using Green Air. They gave me a great price in comparison to my other estimates. There's no reason to go anywhere else for your HVAC needs!

Karl R.
★★★★★

Top notch service. If you are getting anything ductless done, these are the guys to go to this side of the bay.

K G.
★★★★★

We bought a new house and have been remodeling for the past year. We've worked with several contractors during the project and continue to be impressed by Nick and the Green Air team.
Here are a few reasons we had a great experience with Green Air:

1. Nick is a hands-on owner and operator. He scoped and bid on the work himself and would visit the job site often to ensure everything was going as planned. If there was ever a question or issue, Nick would come himself to answer it.

2. Honesty, Integrity, & Quality: Nick is honest and keeps his promises. At one point during the job Nick noticed a line-set was just slightly off in size. I would have never noticed this and it probably wouldn't have had much impact on our system. However Nick saw it, pointed it out, and insisted on having his team come out to replace the line-set without charge.

3. Takes ownership of issues: At one point during the job, we received some bad equipment from the manufacturer (not Nick's fault). Nick noticed the equipment wasn't working right and insisted on replacing it. However the manufacturer said they wouldn't give Nick a refund on the equipment until he returned the original unit to them for testing and evaluation. Nick could have easily passed that problem along to me, leaving me without a system for a few weeks while the manufacturer evaluated it and made a decision on replacement. However Nick didn't want us to be uncomfortable. He used his own funds to purchase a new system for me, and then waited months for the manufacturer to test the faulty system and provide a refund to Green Air. Nick never charged me for that - he just did it.

4. Leading technology: I like to stay up to date on emerging technologies. Nick is the same way. Every other vendor who bid on my job recommended the same old system I've been seen in homes for the past few decades. Nick and Green Air were the only ones who recommended a newer technology that has recently hit the U.S. market. The system they installed for us is much quieter, more efficient, and configurable than anything I've seen in other homes. Nick stays up to date on new technologies so he can offer the newest and most forward thinking solutions to his customers. The same was true of his solar offerings.

5. Cross-platform solutions. Not only does Green Air do HVAC, they also offer solar. They did a great job installing in our solar, which now powers most of our HVAC needs as well. We are expecting big energy savings due to this, which should eventually amortize the cost of our system. Green Air keeps an eye on our energy production via a remote app so they can ensure optimal performance of our solar panels, and gave us an app that allows us to keep an eye on it as well.

6. Great team: We've had visits from with 5 or 6 different technicians from Green Air during construction and installation. Each is knowledgeable, customer oriented, careful, courteous, and extremely professional.

It's been a true pleasure to work with Nick and his team. I wish they built entire homes since they are far superior to my General Contractor (which is a whole other story!)

I've been recommending Nick and Green Air to everyone I know. Hiring them was the best decision we've made on our project so far.

Robert C.
★★★★★

Nick and his team have done multiple installations for me over the years including: Solar on 2 houses, multiple Tesla Powerwalls, as Tesla charging station and a high efficiency airconditioning and heating unit for my home. Always professional, on time and on budget. Quick to follow-up with any items that need attention after the install. I plan to use Green Air again for future projects.

Scott S.
★★★★★

Still working as specified three years after installation. Roof, solar and heating and air and water heater. Love it. Manage it online.

Had a question and got a quick call back with a how to solve over the the phone with detail instruction on how to solve. Nice!

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