Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from KEN's HVAC SERVICE. 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
Ken's HVAC Service, out of Waltham, has built its reputation on the call nobody wants to make: the AC dies mid-heatwave, or the furnace won't fire on the coldest morning of the year. Reading through the quoted reviews out of 131 on file since 2022, the same scene repeats constantly — a homeowner calls around to companies that are all booked solid, and Ken, often working with his colleague George, is the one who shows up same day or within hours. The numbers back that up: a 5-star average from 111 Google ratings and 4.8 stars from 44 ratings each on Angi and HomeAdvisor. Recent reviews describe full heating and cooling system replacements completed in under three days with booties worn indoors and a clean job site kept each day, a Mitsubishi mini-split installation, and a Nest thermostat swap handled carefully around a missing C-wire. Pricing comes up unusually often and favorably — several reviewers who collected multiple quotes say Ken's came in lowest, and more than one mentions he offered a repair option instead of pushing a costlier system replacement. The history runs deep and consistent: a five-star review of a 20-year-old furnace repair from November 2022 reads much like reviews from this spring, with the same notes on responsiveness and follow-through. Not everything has gone smoothly. A 2-star Angi review from August 2024 describes a mismatch between what was promised on the phone, cleaning the coils and checking the drain on both the indoor and outdoor units of a mini-split, and what was actually done, with the outdoor unit left untouched. It's the one clearly negative account in an otherwise long run of five-star write-ups, and worth asking about directly if a job's scope matters to you. The Better Business Bureau also shows one complaint on file, though without detail on what it concerned or how it was resolved. Ken's is the company people reach for when a system fails without warning, especially in the middle of a heat wave or cold snap, and reviewers consistently note he explains what's actually needed rather than upselling parts. Before booking a larger job, it's worth getting the scope of work in writing given the one account where what was quoted on the phone wasn't what was delivered.
“Just to add, I had a great and honest experience with Ken’s hvac service”
Ken and his team are wonderful. They show up on time and are fair the pricing. All their work has been excellent. I highly recommend them.
So a true story here. Our AC failed this weekend Fourth of July. Big heat wave wave in Boston as we all know. I called several HVAC companies and of course they’re all very booked but a guy shows up from a company I shall not name and after doing a little bit of examinations tells me I need a new AC system immediately. It’ll be eight to $12,000. He can do it Monday. Meanwhile, I had also called Ken and he showed up (I believe this is Ken himself), about an hour and a half later. He proceeded to take a look and then simply replaced our capacitor unit and hosed off the condenser coils with my water hose. Immediately, the fan on the external unit at our house was functioning again which the other guy told me was broken and needed to be replaced, hence need for full system replacement. So I had a functional AC system…for $375 vs $10,000!!! What can I say Ken? It’s an honest guy and straight shooter…outstanding service. Highly recommend and not scam artist. Thank you Ken.
Ken and his team were able to schedule me in same-day when my AC broke on one of the hottest May days on record. They were prompt, arriving at the exact time stated, and then it only took about 30mins to both diagnose the problem and replace the part. Bonus, price was less than expected! Will be calling again anytime I have AC needs because they were that good. Thanks, Ken!
Really quick and reliable service with excellent communication for the appointment even when I had to make changes. Thanks Ken!
Ken’s team was very communicative and replaced our entire heating and cooling systems in our basement and third floor in less than three days. They wore booties when in the house and kept a very clean job site after each day. Ken’s price was the lowest of the four vendors we got bids from. I would highly recommend!
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2 changes recorded — last scanned Aug 16, 2026.
Built a full outdoor kitchen's gas and water lines4.5
Long operationNot yet rated
Detailed workmanship3.3