Verified record
Dennis Maher wrote in a 2025 Thumbtack review that two technicians from Knupp came "first thing at 9:30 exactly as they said" after the A/C went out, got right on a problem described as "a little complicated" and fixed it right away. They even changed the air filter and cleaned the condenser, and the price was fair, that 2025 review says. Fabricio arrived when he said he would, according to a 2025 review, and fit in a customer whose a/c wasn't working with the temperature in the upper 90s. They quickly assessed and fixed an A/C problem, according to another 2025 review. In a 2024 review, a customer called them very responsive, even late at night: they came first thing the next morning to fix the AC, unclogged the drain, unfroze the coil and checked the gas as well. In another 2024 review, a malfunctioned motor was replaced quickly and a dead transformer identified and replaced. A reviewer in 2024 called the price very reasonable. On Thumbtack, the company calls itself a small local company and lists heating and cooling, water heater tanks, gas furnaces and sump pumps. Its Thumbtack rating is 4.8 stars from 16 ratings.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Knupp HVAC. 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
The technicians from Knupp responded to my call for help when my A/C went out. They came first thing at 9:30 exactly as they said in the response to my request. Two very professional Experts who after getting brief description of the problem which was a little complicated right on it and fixed it right away. That showed the knowledge and experience to diagnose the problem and get it fixed right away. The price was fair, the technicians were punctual, professional and couldn’t have been nicer. They even changed the air filter and cleaned the condenser. I am happy to say Knupp has a new regular customer. me! Thank you, Dennis Maher
Knupp HVAC was great! They quickly assessed and fixed the A/C problem and were very kind and professional. I highly recommend!
Fabricio was friendly and arrived when he said he would. The temperature was in the upper 90s and my a/c wasn't working, so he went out of his way to fit me in, as busy as he was, so my animals and I wouldn't roast! I would definitely use this company again!
Great working with Knupp!
I have a malfunctioned motor and he was able to replace it quickly and also identified/replaced the dead transformer. I’m very pleased with his work, professionalism. Highly recommend Krupp
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2 changes recorded — last scanned Sep 27, 2026.
Transparent diagnostics5.0
Broad plumbing and HVAC range5.0
Repeat, years-long customers5.0
Water heater and boiler installs5.0
Two AC technicians out within a few hours5.0
