Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Coastal Heating, Air Conditioning and Heat Pump. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
Coastal Heating, Air Conditioning and Heat Pump, on Washington Street in Quincy, is built around big heat-pump and mini-split installations — the kind of job where a crew shows up with a truck full of equipment and multiple wall units go in around a house in a single day. A June 2026 review describes a mini-split system with two outdoor condensers running six indoor wall units across three floors, installed in one day by an eight-person crew; a May 2026 review describes a similarly large whole-home heat-pump job, calling out Mike and Lisa for staying responsive and answering questions throughout. Coastal's Massachusetts HVAC license is active, and the written record runs deep — 54 reviews since 2021 across four sources, with the same named staff (Mike the owner, Lisa in the office, technicians Alex, Nick and Rick among others) showing up again and again for fast work during heating emergencies. In a January 2022 review, a technician squeezed into a crawlspace and tracked down a part to restore heat the same day, after being told it might take until Monday; in another January 2022 review, a technician responded within hours of a Friday-morning call and fixed a furnace before an approaching blizzard. Several reviews also describe the owner and office staff walking customers through Mass Save rebate and financing paperwork. The record isn't uniformly smooth. In an August 2023 review, a homeowner said a mini-split installation was so poorly done that the system was irreparably damaged, and three separate repair companies declined to touch it, with Coastal declining to come look. In a March 2024 review, a customer described a $270 charge tied to a water-heater part that turned out to be wrong, followed by a refusal to fix it without a further charge. Billing and scheduling friction shows up elsewhere too: a June 2025 review described a job being declined two weeks after a quote was promised, with no notice, and a February 2023 review described being charged for a service call a tenant scheduled without the account holder's authorization, plus a difficult back-and-forth over waiving the fee. For a full heat-pump or mini-split installation, the crew work and project coordination draw the most consistent praise across the years; for something smaller, or if a billing question comes up, it's worth getting scope and pricing confirmed in writing before work starts.
We had a mini split system installed by coastal in Dec of 25. We recently turned the system on due to the hotter weather and WOW. It is an amazing system. There are 2 condensers outside running 6 wall units inside. 3 on the first, 2 on the second, and 1 on the 3rd floor. It was a massive amount of work and Coastal got it done in ONE day with 8 guys completing it. The entire crew Mike, Lisa, Nick, Dana, Alex, and everyone else were absolutely phenomenal. I would highly recommend Coastal Air Conditioning for your mini split system Sincerely Jay Quincy Ma.
We used Coastal to install whole-home heat pumps and had a great customer experience. The team was highly responsive even before installation, answering all of our questions promptly and guiding us through each step of the process. Mike and Lisa were especially helpful and always available, making sure we felt supported and informed throughout. The installation team was professional, respectful of our home and the environment, and completed the entire system efficiently and on schedule within a day. We are very satisfied with our new system and truly appreciate the dedication and service provided by Coastal. Highly recommended.
We used Coastal before for an emergency fix on the heat pumps in our former home two years ago. Based on their professionalism and prompt service, we knew we would use them for future projects. Mike and his team did a fantastic job installing a Mitsubishi mini split system in our new home recently. The team that did the work were incredibly friendly, efficient and knowledgeable. Lisa in the office was very courteous and helpful. Mike was always available to answer any technical questions or assist with the Mass Save Heat Loan and Rebates. The team installed our system in a day and spent the time showing us how to use the new system as well as the Mitsubishi app. We would 100% recommend Coastal Heating and Air Conditioning to anyone!!!
Excellent Service from Start to Finish! I recently had a new HVAC system installed in my home, and I couldn't be happier with the experience. From the initial consultation to the final walkthrough, the team was professional, punctual, and knowledgeable. They took the time to assess my home’s specific needs and recommended a system that was energy-efficient and within my budget. The installation was completed on time, with minimal disruption, and the crew left the workspace clean and tidy. They made sure everything was running perfectly before they left. Since the installation, my home has been consistently comfortable, and hope to see a drop in my energy bills. Highly recommend this company for anyone looking for reliable and high-quality HVAC installation!
5 stars isn't enough. During a heat wave (105°) I called, and because I wasn't a long-time customer, they just couldn't fit me in. They gave me a couple of phone #s to call, and I got an appointment for the next day. They called me back and said they could squeeze me in, but I said I was all set. That was until I got a quote. To try to keep this short, the quote was outrageous. I called Lisa, and she had her guys out, and they gave me a quote for a full heat pump replacement that was $11,000 cheaper than I had. It got easier after that. Lisa contacted me almost daily to arrange everything. Day of installation everyone was on time, clean and professional. And they were done before their scheduled finish time. The owner Mike was fantastic to deal with. Nick, Alex, and Dana were amazing, but Lisa is special. She doesn't know me from a whole in the wall, but cared about me and everything like we were lifelong friends. This is the Company and People you want to deal with. No exceptions. And I will recommend them to everyone I know.
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Certified attributes are verified against the public registry. Others are the business's own statement.
Established 3.5 rating
MassSave error caught3.5