Cotti-Johnson HVAC

Ask a Cotti-Johnson customer who did their work and they'll usually give you a name — Chris, Bryant, Gabriel, JT — review after review credits a specific technician for explaining the problem and fixing it right. That's the strength here. What's harder to square is what happens when a bigger job goes sideways: a run of recent reviews describes pricey installs and repairs that didn't hold. The company works out of Taunton and covers Taunton, Raynham, Norwood and Boston, per its own service-area listing, doing HVAC installs and repair alongside electrical, plumbing and duct work across southeastern Massachusetts. It traces back to a sheet-metal shop opened at the Weymouth Shipyard in 1944 by war veterans Louis Cotti and Bill Laurence; Gary Johnson joined in the 1970s and bought the company in 1984, and it's now owned by Adam V. and Angelo S. Boccalini, with longtime employee Kevin Main as a minority partner — the company describes itself as family-owned with 78 years in business. That split between good field work and rockier follow-through shows up in the numbers too: 653 reviews since 2017 across four platforms, a 4.8-star average from 1,419 Google ratings, and BBB accreditation with an A+ grade since 2021. Its HVAC license is active on the state registry. Recent reviews back up the technician praise — a heat pump and dual-fuel AC system installed by a named crew earned an "outstanding job" writeup, and an electrician cleaned up a downed-tree panel repair without leaving a mess. But the same recent stretch includes real trouble: one paying service-plan member says they went a full month without hot water; another describes a $25,000-plus mini-split system that "has not worked right from the very first day"; and an Angi review from February 2026 describes a $15,000 heating system that malfunctioned four times within six months, still under its warranty. An August 2025 review describes an electrician who broke a breaker while giving an estimate and charged for it anyway. Before signing off on anything beyond routine service — a full system install, a big repair, a membership plan — get the warranty and response-time commitments in writing, and ask what happens if the first fix doesn't hold; more than one recent review describes a return visit or a bill for a problem that wasn't actually resolved. Cotti-Johnson is a solid call for day-to-day HVAC and electrical service, where the same technicians turn up review after review with real names attached to the work. For a major system replacement, get the guarantee in writing before the crew arrives.