Verified record
M J Fahy & Sons is a Waterbury plumbing, heating and air conditioning contractor that says it has been in business since 1890. Its website lists a service area that includes Waterbury, Watertown, Wolcott, Naugatuck, Southbury and Oxford, and its BBB profile, which carries an A+ grade, describes plumbing, heating, air conditioning and fire protection work on residential and commercial projects. A customer whose colonial's basement flooded from a failed connection in the outside drain pipe said MJ Fahy recognized the external drain problem, and that Tina opened the schedule for the emergency and recommended an excavation contractor. A 2026 customer said MJ Fahy converted their heating system from oil to natural gas and installed a new central air conditioner. A 2025 customer said they called at 8 AM about an urgent issue, the company arrived by 10 AM, and the problem was fixed by noon. A 2025 customer had a new toilet installed along with an elbow for a bathtub replacement, and said $27 came off the toilet price and $50 off the labor. That 2025 customer said a worker dropped the old toilet and shattered it on the driveway, and the company sent someone out to clean it up. A 2024 commenter on r/Connecticut called M.J. Fahy & Sons one of their go-to's. A 2023 customer said their AC unit was never registered, leaving it out of warranty, that they waited weeks for each service call, and that a leak in the coil was never diagnosed before they needed a new condenser. A 2022 customer said a worker sent for a plumbing issue left twice saying he forgot something and billed for that time; that customer said the owner later adjusted the time. A 2025 reviewer complained of rudeness on the phone. A 2021 customer said an install of three Moen bathroom faucets and two toilet floats was not done correctly and that it took over a month for a technician to come back. That 2021 customer also said the company fixed their water heater properly during another service request. It holds an active Connecticut P1 plumbing licence, PLM.0204042-P1, and an active Connecticut S1 heating and cooling contractor licence, HTG.0386523-S1, both under M J Fahy & Sons Inc.
“Bosse Heating & Air Cond, MJ Fahy, Harp Home Services, James Rybczyk Instant Response Plumbing & Heating”
“F. F. Hitchcock and M.J. Fahy & Sons are my go to's.”
In July 2026, my colonial house basement flooded due to a failed connection in the outside drain pipe. Once again, MJ Fahy rescued us from a condition that curtailed all use of our home plumbing by an accurate recognition of the external drain condition. Tina not only opened the business schedule for the sudden emergency, she recommended a highly reliable excavation contractor that completely and quickly remedied the disastrous situation. R Lee
I converted my heating system from oil to natural gas and installed a new central air conditioner.MJ Fahy did both . I am very happy with the level of service and professionalism. I would absolutely recommend them.
Very rude on the phone, learn how to talk to potential customers!
Excellent service
I called this plumbing company at 8 AM about an urgent issue, and they arrived on-site by 10 AM. By noon, the problem was completely fixed! Their team was highly professional, efficient, and offered fair pricing. I’m truly impressed by their quick response and quality work. If you need reliable plumbing service, I highly recommend them!
Specializes in
Also offers
Service area
1 change recorded — last scanned Oct 13, 2026.
Typical Connecticut range for this kind of work, from regional averages — not a quote from M J Fahy & Sons Inc. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$4,700 – $10,700
Typical HVAC project around $7,700
Languages
Languages
Boiler install by professional, neat techs3.9
Gas boiler work at a good price3.7
