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East Coast Air is a veteran-owned HVAC company based in Marshfield, covering the South Shore from Quincy and Weymouth down to Plymouth. The company traces its start to 2005, putting it at over two decades in business, and it holds Mitsubishi Diamond Contractor status along with a Mass Save HPIN partnership, both tied to ductless heat pump work and the state's energy-efficiency program. BuildZoom shows 10 projects on file and lists the company's license status as not required in Massachusetts, per BuildZoom's own November 2024 check. The company offers free estimates. Before booking, it's worth confirming licensing, insurance, and recent completed jobs directly with the company.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from East Coast Air. 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
Specializes in
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Ownership
Certified attributes are verified against the public registry. Others are the business's own statement.
1 change recorded — last scanned Sep 17, 2026.
Transparent diagnostics5.0
Broad plumbing and HVAC range5.0
Repeat, years-long customers5.0
Water heater and boiler installs5.0
Two AC technicians out within a few hours5.0