Verified record
Customers writing in 2024 and 2025 described unresolved installation problems and difficulty getting Five Stars HVAC Services to finish repairs. Google lists the Westborough business at 2.7 stars from three ratings. In a November 2025 review, a customer said Anderson was pleasant and the prices competitive, but that he and his team failed to show up regularly or when scheduled. The customer reported that an attic unit caused a leak that discolored their ceiling. They said the leak was repaired after several weeks of delays, but the promised ceiling repainting was not done. They also described holes left in the ceiling and a wall after a thermostat was removed, saying they had waited several more weeks without the team returning to fix those issues. A January 2024 reviewer described a furnace installed in an in-law apartment in December 2022 that they said never worked properly. They reported a burst pipe that flooded the apartment, damage costing more than $100,000 to repair and the loss of their home insurance. The reviewer said the company initially did not come to inspect the problem. After the furnace failed again in October 2023, they described about two visits that did not resolve it, followed by unsuccessful efforts to get the owner, whom they named João, to return. That reviewer said another company subsequently identified installation problems involving the condensate trap, propane components, combustion and the spacing of exterior pipes, as well as a broken heat exchanger. They reported using the furnace warranty and spending $5,008.75 on corrective work. These are the customer’s allegations about the installation and subsequent costs.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Five Stars HVAC Services. 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
Anderson was nice and the prices were competitive but when it came to finishing the job, showing up regularly and when scheduled, he and his team failed. I would not recommend them even at their price because of the lack of follow through. One unit they installed in the attic caused a leak which discolored our ceiling. He had it repaired after several weeks of delay due to workers being "sick" and the weather being rainy but his team who were unreliable and often inexperienced did not repaint the ceiling as promised. They also left a hole in the in the ceiling and a he in our wall where they had to uninstall a thermostat. I have given him several weeks to fix these issues and he has still not sent his team. I'd recommend you pay more for a reliable and experienced group who knows how to follow-up and finish a scheduled job.
Worst company and people to work with! Very inexperienced owner and employees. They installed a new furnace in my in law apartment December 2022 and the new furnace never worked properly. My family and I traveled and a friend saw that a pipe burst flooding the whole apartment. We lost our home insurance because of a damage of more than $100,000 to fix. When we contact the company they never came to look. On the next year October 2023 when we turned the machine on it didn’t work, again tried contacting the company, they came about 2 times and didn’t know what was wrong, João kept saying that the whole house was wrong except fixing the machine. Machine worked for a week and stopped again. Then owner travelled and machine still wasn’t working it kept blowing cold air. Tried to resolve with owner (João) to come fix machine but he never got back to me. So we had to find an experienced company, the company came said condensate trap was installed wrong and emergency precious switch needed to be for propane, and combustion was incorrect and needed to be cleaned. After they cleaned, they saw the heat exchange was broken. We had to use the warranty on a 1 year old machine that never worked because the owner is inexperienced! And after the heat exchange was installed they noticed the kit was an universal kit used and they had to put one for a propane machine. Then they said the pipes outside are too close to each other causing cross contamination. At the end, we spent $5,008.75 to fix a BIG mistake and a lot of damage Five Star caused to us, and lost our insurance company. WORST COMPANY AND OWNER HARD TO DEAL WITH!
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No changes recorded yet — last scanned Sep 30, 2026.
Fast emergency response4.2
Handles complex old-house retrofits5.0
Diagnoses before replacing5.0
65-year-old heating system replaced3.3