Verified record
Twins Services INC is a heating and cooling business in Millis, MA. Its website describes heat pump repairs, installations and maintenance, says it serves Boston and nearby areas, and says it has been in business 13 years. In a 2026 review, a customer wrote that they installed HVAC in the house the previous summer: Vadim's team came in for 4 days to install everything in the entire house and left the house spotless each day, at a price that customer called very reasonable compared to other companies. In a 2026 review, a customer wrote that Vadim diagnosed low refrigerant in both units, tracked down and replaced a leaking schrader valve, and found a partially burnt out backup resistive heater in the downstairs air handler. In another 2026 review, a customer wrote that they changed the AC and indoor furnace and relocated the supply and return ductwork that ran through a wall being taken down between the kitchen and living room, and that the project was completed on time. In a 2025 review, a customer wrote that Vadim and his crew installed heat pumps in under four days. In a separate 2025 review, a customer wrote that when their heat and AC broke, Vadim responded right away, came as soon as he could and fixed everything quickly. In 2025, a customer wrote that they called when the AC stopped working and they came the same day. A 2025 review said they removed an old system and installed a completely new HVAC in a townhouse in Ashland MA.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Twins Services INC. 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
They installed HVAC in our house last summer. It was a great experience. We thought it would be a lot of mess and headache to install but Vadim made the whole process so easy and quick. His team came in for 4 days to install everything in the entire house. Everyday that they left the house was spotless. I wouldn't even know that they were here. They kept things clean and were very respectful of our home. I would highly recommend them. Vadim is very professional and quick at his response. Their price is very reasonable compared to other companies.
Vadim is awesome! He is truly a heat pump expert and will be the first person I call for HVAC work in the future. We were having extremely high electricity bills in a house we recently moved into. Vadim immediately diagnosed low refrigerant in both units, then tracked down and replaced a leaking schrader valve that probably caused the issue. He also found that the backup resistive heater in our downstairs air handler had partially burnt out, and our attic filter needed replacement. He works quickly, knows exactly what he is doing, and charged a fair price for a lot of work to get our system back in great shape.
We changed the AC, the indoor furnace and took down the wall between the kitchen and the living room. The main issue was that both the supply and return ductwork were running through this wall and needed to be completely relocated. We had multiple specialists review the project, but once the owner came to give an estimate, I realized I wanted to work with them. His ideas, understanding of what needed to be done and confident vision made me feel that he truly understood the project. Many others came and said either they don’t do ductwork or that it was too complicated because of the location and limited space or gave unrealistic price. The owner, Vadim, came and said this was not a problem and that it could be done in multiple ways. I completely agreed with his vision, and it was also very important to me that he gave a fair estimate. They delivered exactly as promised, and when I spoke with the workers during the process, I realized these guys have many years of experience. The complicated project was completed on time!
They did an excellent job with the HVAC at my house — professional, quick, and super knowledgeable. The team arrived on time, explained things in a way I could understand, and made sure everything was working perfectly before they left. It’s really nice to find a company that actually cares about quality and customer happiness. I’d definitely recommend them to anyone needing HVAC work.
I have been using twins services for a few years so far, they have been great, first time i used them after receiving a really high heating bill on my old outdated system i had, i called them and shortly after they replaced my system and my bills went significantly lower the following month. After that had issues with my old condenser outside, Twins services came by, diagnosed the system and were able to fix my air conditioning problem same day. I also used their services on installation of new hvac ductwork and ventilation a few years ago on a project and never had any issues since. I would definitely recommend them to anyone i know and have been doing that many times already. I am happy to have a company contact like this one and able to call them anytime i have a problem with my heating or cooling!
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1 change recorded — last scanned Sep 26, 2026.
Handles complex retrofits5.0
Diagnoses before replacing5.0