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Typical Greater Boston range for this kind of work, from regional averages — not a quote from AAIR Systems Technologies. 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
Heat pumps and mini-splits, with the Mass Save paperwork handled for you, are the jobs AAIR Systems Technologies' customers keep describing. The Oxford HVAC company says it has been in business since 1993 and installs, repairs and maintains heat pumps, central AC, ductless mini-splits, boilers and forced hot air furnaces across southern Worcester County. It holds 4.7 stars from 133 Google ratings and an A+ from the BBB, where it is accredited. Ryan G. Casavant's Massachusetts sheet metal licence (3778-SM-M1) is active on the state registry. A July 2026 customer had a heat pump and two mini-splits installed and ductwork changed on an existing furnace, and credited Tina in the office with handling Mass Save. In May 2026, a household that lost a furnace said the crew installed both furnaces and a heat pump in two and a half days, kept them in heat throughout, and got them a $5,400 rebate. An August 2026 customer whose central AC quit on a Sunday said Ryan, whom they call the owner, called back within 15 minutes and a technician came Monday morning. In a May 2025 review, a homeowner said AAIR was the only company that suggested checking whether their existing unit was still under warranty, and it was. The complaints center on charges and callbacks. In June 2026, a customer said they paid almost $1,400 for a recharge less than a year earlier, the system still wasn't cooling enough, and about eight calls went unreturned. A September 2025 reviewer was billed $225 for a visit of under five minutes about ants around a heat pump installed in 2024. In April 2025, a customer said line-set material failed after about four years and they were quoted $1,800 to replace it, and a March 2025 reviewer described a job with unannounced young workers, knives left on trusses and unreturned office calls. A November 2023 customer said service declined after the company was sold to Ryan.
“AAIR Systems. Oxford MA. Friendly, reliable, and a fair price. I would highly recommend.”
On Sunday our central ac decided not to work. We reached out to AAir Systems Technologies who installed our system. Because it was Sunday we got the answering service and had to leave a message. We received a call back within 15 minutes from the owner Ryan who assured us our issue would be dealt with Monday morning. Sure enough his tech named Tyler showed up Monday morning and diagnosed the problem. I was so impressed with him! So knowledgeable and so personable! Unfortunately they didn't have the part we needed however Tyler said I will make sure we have it tomorrow (Tuesday) and I will be back to install it. Tyler arrived Tuesday afternoon with the replacement part, I had to leave for an appointment so I asked that he just close the door when he was done. When I came home I found a note above my thermostat from Tyler that said my ac was all set and to have a nice summer! I was blown away! This is ABOVE AND BEYOND great customer service! Nice work AAir! And the world needs more Tylers!
Great company, at all levels. Ryan was great at answering all my questions and concerns when he came by to provide estimates on multiple projects. Tina was fantastic every time I called or emailed. She was particularly helpful in dealing with MassSave. Trevor and team were timely, friendly and professional during the installs. I had AAIR install a heatpump and two mini splits as well as change the ducting for my existing forced hot air furnace. I will 100% call them for any future HVAC needs.
In Ryan and his team I trust! From my initial phone call to request a quote Ryan was responsive, polite, professional and patient with all our questions. He walked my wife and I through multiple options in replacing our whole house heating and air conditioning system. We narrowed it down to two possibilities, so I called Ryan again and we went through all the pros & cons to each and settle on what was best for us. Then he passed us on to Tina to help us through the Mass Save loan process. She was awesome! She is well versed in the process so it went smoothly. We were approved in a short time and were able to schedule the work. Then the team arrived and it was like watching a well organized work site. From set up to the clean up they were clean, efficient, polite and knowledgeable. Once finished I was instructed on how the run the system and it’s been every thing that was told it would be. My over all experience is extremely satisfied and would highly recommend Ryan and his team for all your HVAC needs. Thank you AAIR Systems
They did work on my unit less than a year ago. Recharged for almost $1400 with labor stating that the wrong refrigerant had been added to the system. I’ve called them a good 8 times the last couple of weeks, since the system is still running through the same issues. They told me they had to check to see if they still have the refrigerant R-22. Which isn’t the issue here nor was it then. It’s blowing & was blowing cool air but not enough of it. They’ve yet to call me back. Never met a more unprofessional business. Dont waste your time or hard earned money.
AAIR system came to install both furnaces and heat pump in hour hose when one of our furnace died. They were very swift and did it in 2 and a half days. They made sure we had heat all the times. Everyone of them were very kind and did the job beautifully. They have been doing our services for several years. Professionalism at best. Among all the contractors who have done jobs in our home, this group of gentlemen are the best. Please try them and you will not be disappointed. They even got me the rebate $5400.00. Thanks AAIR SYSTEMS
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2 changes recorded — last scanned Aug 15, 2026.