Corinne K.
11/13/2025
I had my annual boiler checkup done today, and the young man that serviced it was very thorough and knowledgeable. He was also very polite, and answered all my questions. Callahan installed my...
Callahan A/C & Heating Services
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91 Belmont St
North Andover, MA 01845
Callahan A/C & Heating Services is a full service Mechanical Contractor for both residential and commercial customers with licensing in Plumbing, Piping and Refrigeration trades. We have live people to answer your call and experienced staff to handle any size project. We offer complete services for Heating and Air Conditioning Systems including replacements of your current systems, conversions to high efficiency, new construction including design and build or system expansion in your new space. Our Plumbing Department is capable of handling any job, large or small, from changing a faucet to remodeling your bathroom.
Reviews
3.530 reviewsPat W.
6/30/2025
A friend recommended Callahan and I'm so glad she did! The technician came on tine and gave perfect advice and maintenance which was surprisingly reasonable. Great service.
Marie M.
7/7/2025
After my three strikes review I received a call from Katie, one of the owners. She was very surprised & upset with my experiences & said that she would look into it because it is & has always...
Minh T.
2/4/2025
Our boiler ignition kept restarting and we didn't know why. Called Merrimack Valley Plumbing and their tech blamed the switches and control board and wanted to replace them for a couple of grand....
Jessica T.
10/3/2024
The washing machine pump constantly gets clogged now all the time. The sound it makes shakes the PVC pipes and the whole house so I know it is clogged. This is also underneath my bedroom. MY GOD...
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