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Typical Greater Boston range for this kind of work, from regional averages — not a quote from Caswell Mechanical. 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
Caswell Mechanical is a Newburyport mechanical contractor at 24 Graf Rd that says it handles HVAC, plumbing and electrical installation, service, maintenance and emergency work for homes and businesses across Massachusetts, New Hampshire and Maine. The company's site says it works through a relationship with Service Logic. BBB shows the business incorporated in 2005 with 4 employees. Caswell Mechanical Inc holds Massachusetts HVAC licence 460-SM-B, active on the state registry. BuildZoom lists Electrical Business licence #9359. Customers describe fast, fair service calls. In a May 2026 review, a Newburyport customer said they had worked with Caswell since 2020 and recommend it to everyone who asks. A February 2024 reviewer with no hot water said they came right out and found the pricing fair, despite hearing the company was more expensive than others. In an October 2023 review, a customer who first used them for electrical work called them professional and quick at a fair price, and later used them for a leaking water heater with the same results. The complaints are specific. In a February 2023 review, a customer who called about water pressure from the main said the work was done without a quote first and questioned the business practices, not the quality of the work. Two reviewers, in April 2023 and August 2025, complained about how company drivers behaved on the road. The firm also worked on a community project: an April 2024 local news item named it among the contractors building a food pantry expansion.
“Now, Coffey Design and Builders, Atlantic Contract Systems and Caswell Mechanical have stepped up again to build the expansion, which will make the pantry and its volunteers even more efficient.”
“At Ten Center, she also found her future husband, Jeff Caswell, whose Newburyport-based firm, Caswell Mechanical, was a contractor on the project.”
I give 5 stars because google doesn't allow me to give 10. I have been working with Caswell since I moved to NBPT, back in 2020. I recommend Caswell to everyone that comes to me, asking for professional services around the area.
Drivers have no regard for public safety. Blowing through red lights in downtown Boston while crosswalk signs are active for pedestrians.
Responsive and lovely staff
I didn't have any hot water, and they came right out. I've heard from other people that Caswell is more expensive than other places. That wasn't true in my experience- very fair pricing.
I have tried several electrical companies in the Northshore, MA area. Caswell is by far the most professional, performing great quality work quickly and at a fair price. They go above and beyond to ensure the job is done properly and will promptly answer any questions that come up. I have even started using them for plumbing as my hot water heater was leaking- same service and results.
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1 change recorded — last scanned Aug 8, 2026.
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