Verified record
Cannon's Plumbing & Heating is a family-owned Cape Cod plumbing and heating company, run by owner and master plumber Robert Cannon Jr. — known to reviewers simply as Bob — working alongside his son Bobby. The company says it has operated in Massachusetts since 2000, and BuildZoom shows 47 recorded projects on Cape Cod. The Better Business Bureau gives it an A+ rating, though the business is not BBB-accredited. Its website lists a self-reported Master Plumber License (#13414) for Robert Cannon Jr. that we were unable to independently verify. The reviews are consistently strong and describe a genuine range of plumbing and heating work. A November 2024 review described converting a home from oil to natural gas, with Bob and Bobby installing a new furnace and appliances; a separate November 2024 review described a new heating system installed with clear communication throughout; and a September 2024 review described Bob responding quickly to a leaking shower valve and fixing it on the spot. A March 2025 review praised the team as caring, prompt, and high quality, and other reviews describe toilet resealing and a refrigerator ice-maker hookup handled within days of the call. Several customers describe using the company for years running. No negative reviews turn up among the ten on file — the lowest is a still-positive 4-star review calling the work professional, clean, and fairly priced. For plumbing and heating work on Cape Cod — from routine repairs to a full oil-to-gas conversion — Cannon's has an unbroken run of strong reviews and a long-operating family business behind it; it's worth confirming current license status directly with the state before a larger job, since it wasn't independently verified here.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Cannon's Plumbing & Heating Co. Inc.. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$290 – $710
Typical plumbing job around $500
Bob and company were super awesome! They were genuinely caring and prompt, as well as delivering quality work. I highly recommend Cannon! Anytime I need professional help, I will be reaching out to them!!! Thank you again Bob!
We had a new refrigerator delivered just before Thanksgiving but it needed a new connector to hook up the ice maker feature. I called Cannon's as a new customer and Bobby came out within a couple of days to come hook it up. He was very polite and helpful. I will be using Cannon's for all my future plumbing needs.
We converted our home from oil to natural gas, Bob and Bobby did all the work, new furnace and appliances, fantastic job, wouldn’t use anyone else!
I recently had a new heating system installed by Cannon's Team. Due to their great communication, process was easy. Their team is professional, efficient and personable - taking time to answer questions. GREAT job by a GREAT Team!!!
I found them to be professional, clean and fairly priced, would definitely use them again! Dave
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Certified attributes are verified against the public registry. Others are the business's own statement.
Re-analyzed rating 3.7 → 3.9
Added 10 new comments, added 44 new photos, license now expired, established 3.7 rating
No-upsell honesty5.0
Full bathroom remodels4.9
Tough diagnostics solved4.8
Fast emergency response4.8
No hard sell4.8
Remodeling results4.4
Same-day water heater emergency response4.3