Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from A&D Sheet Metal, Inc.. 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
A&D Sheet Metal is a Waltham HVAC contractor that says it has been in business since 1977, designing, installing, replacing and repairing forced hot air heating and air conditioning systems for homes and commercial spaces, including new construction with builders. BuildZoom names Arthur J. Dubois as owner and shows 42 permitted projects, and Arthur DuBois's Massachusetts sheet metal licence (4540-SM-M1) is active on the state registry. The BBB rates it A+, though it is not BBB accredited. In a May 2024 r/Waltham thread, a commenter said A&D replaced their entire HVAC system apart from the ductwork and helped them through the HEAT loan paperwork.
“I've had good experiences with A&D Sheet Metal in Waltham. They replaced our entire HVAC system (minus duct work) for us. They also helped us jump through the hoops of the HEAT loan paperwork - which is a program I recommend checking out, if you haven't already.”
“Founded in 1977, A & D Sheet Metal Inc. provides residential and commercial HVAC solutions for customers throughout the Cambridge area.”
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1 change recorded — last scanned Aug 16, 2026.