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ComfortMastersHeatings is an HVAC company in Stow. On a 2026 AC replacement, the estimate covered a new thermostat and other needed parts and accessories, not just the HVAC unit, and that customer called the communication from Miguel and Billy "clear, prompt, and spot on." Another 2026 customer got estimates from five contractors before choosing the company; Miguel explained options including a heat pump with oil furnace backup, which that customer chose, and Billy handled the rebate and financing paperwork. In 2026, Miguel fixed a furnace pilot light that would not stay on by cleaning dust from the pipe that was blocking the pilot, and charged only for the service call. On a 2026 AC and HVAC upgrade that included replacing the old system and a water heater, Billy did an in-home evaluation first, prepared the ductwork ahead of time and used boot covers and drop cloths, and the job was finished in about a day and a half. For a 2026 customer with two furnaces and two AC units, Billy and Miguel repaired a furnace and an air conditioner within a couple of hours. In 2026, while a customer was without AC, Miguel offered to bring over window units for free, and the new system was installed the very next day. In a 2025 review, Billy came out the same day to check a system he had installed five years earlier, took care of the paperwork and permits for the new one, and later walked the customer through an AC and thermostat fix by phone late on a Saturday without charging for the advice. In 2026, one customer described a billing mix-up and some missed follow-up communication after the company's computer system was down during the appointment; Miguel reached out soon after and explained the billing process.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from ComfortMastersHeatings. 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
Very pleased with the whole AC replacement and service process, from the fair price to the professional installation, quality workmanship, and helpful advice. The job was done right the first time, and communication from Miguel and Billy was clear, prompt, and spot on throughout the project. If you need AC repair, maintenance, or a new HVAC system, this team stands above the rest. I really liked that the estimate covered a complete package, not just the HVAC unit. It also included a new thermostat and the other needed parts and accessories to help improve system safety, airflow, and energy efficiency. The crew explained everything in simple terms, kept the work area clean, and made sure the system was running properly before they finished. Overall, a smooth experience with excellent service, strong value, and results that made the home much more comfortable.
I decided to replace our HVAC system and got estimates from five contractors before choosing Comfort Masters Heatings. The main reason was the excellent experience I had with Miguel, who explained several system options, including an oil furnace with central air or a heat pump with oil furnace backup, along with different equipment brands. He was very knowledgeable, answered all of my questions clearly, and never used any sales pressure. I went with the heat pump and oil furnace backup setup, which has worked out very well. The installation was smooth from start to finish, the crew was friendly and respectful, and the cleanup was spotless. Everyone took time to answer my questions and make sure I understood how the new heating and cooling system would operate through both warm weather and the colder Massachusetts heating season. The rebate and financing paperwork for the energy programs and equipment warranties could have been overwhelming, but Billy handled it all efficiently and made the process much easier. I also had a couple of very small heating system concerns after the install, and they were taken care of quickly by sending a technician out right away. Annual maintenance on the heat pump was completed professionally, and the service was thorough. After living with the system through all seasons, I can confidently recommend this team for HVAC installation, service, and maintenance.
I couldn’t keep the pilot light on, and after trying all night to use a small heater to keep my family warm, I started looking for heater repair help first thing in the morning. After a frustrating call with another company, I found someone who was honest and knew exactly what to do. Miguel arrived, checked the furnace right away, and fixed the issue fast by cleaning dust from the pipe that was blocking the pilot. He only charged for the service call and did not try to sell me a new furnace or extra heater parts I did not need. The whole heating repair visit was simple, fair, and professional, and we had reliable heat again very quickly.
We worked directly with Billy for a full AC and HVAC upgrade, including replacing our old system and water heater. He did a detailed in-home evaluation before ordering the equipment and made sure everything was planned correctly for the install. He ordered the system right away so there would be no delays, and that really helped keep the project moving. Billy showed up on time, treated our home with care, wore boot covers, and used drop cloths throughout the installation. He also prepared the needed ductwork ahead of time, which helped the AC installation go faster and made everything fit perfectly once it was installed. The whole job was finished in about a day and a half, and the new air conditioning system works great. Overall, it was a smooth, professional HVAC service experience, and we would highly recommend them for AC repair and replacement work.
We have two furnaces and two AC units, and when the weather in Stow kept shifting from chilly to warm, one furnace and one air conditioner started having issues. i called and spoke with billy, and he was very helpful. He came out the next day, checked both hvac systems, explained the problems clearly, and we set up the repair visit soon after. When his outdoor job opened up because of the rain, he called to see if he could come by earlier, which worked out great for us. billy and miguel arrived promptly, got right to work, and repaired both units within a couple of hours. they were professional, easy to talk to, and clearly knew heating and cooling systems very well. This was the second time they helped us quickly when we needed service, and both experiences were smooth and reliable. we really appreciated the fast response, honest communication, and quality workmanship. our furnace and air conditioning system are both running well again, and i would definitely recommend them to anyone needing hvac service, repair, or maintenance.
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2 changes recorded — last scanned Sep 26, 2026.
Rewiring, panel upgrades and EV chargers4.8
Broken-down heater running again2.4
Handles the Mass Save program paperwork3.3