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Medford Wellington Service is a commercial mechanical contractor headquartered in North Billerica, with a regional office at 17 Locust St in Medford, serving businesses across Massachusetts, New Hampshire, Rhode Island, Connecticut and Maine. The company traces back to 1967, when John Annarelli Sr. founded it as Wellington Service Company doing refrigeration and air conditioning work; it later took the Medford Wellington name and has stayed a family business, with his son John Annarelli Jr. becoming president in 2003 and Michael LaCrosse becoming CEO in 2023. Its work spans HVAC/R, refrigeration, sheet metal, gas fitting, plumbing, electrical and commercial-kitchen (hotside) services, and it holds an active Massachusetts HVAC/sheet metal contractor licence verified through the state registry, along with an A+ Better Business Bureau grade. A 2024 CBS News segment covered the Billerica-based company opening its own trade school to address the industry's labor shortage, and a 2025 local-news article lists it among the specialty subcontractors on a Massachusetts construction project. Online sentiment is mixed: a 2022 Reddit comment called the company "usually pretty good," a 2024 Reddit post described a contract experience very negatively, and a March 2025 Google review called the service "great."
“Wanna give a shout out to Medford Wellington, for absolutely SUCKING. I have a contract with them for work and those bastards are the WORST.”
“Medford-Wellington is usually pretty good.”
“Connolly Brothers served as both Architect of Record and Construction Manager, coordinating a team of specialty contractors, including D&D Electrical Contractors, DJ Plumbing and Heating, East Coast Fireproofing, Hiller Fire Protection, Medford Wellington Service, Northern Dynamics, and Superior Contracting Services.”
“The HVAC company out of Billerica has been in business for over 50 years. Now they're getting creative to find employees, opening a trade school right on their property to hopefully solve the shortage problem.”
Great service!
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Certified attributes are verified against the public registry. Others are the business's own statement.
1 change recorded — last scanned Sep 19, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Medford Wellington Service Co.. 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
Honest pricing5.0
No hard sell4.8
Whole-house gut renovations4.4
Same-day water heater swap under other quotes4.0
28 years in business2.2
Registry-verified HVAC licenseNot yet rated
