
The Top Plumbing and HVAC Contractor in Harwich, MA, and Other Service Areas
As a trusted plumbing and HVAC contractor in Harwich, MA, and nearby areas, Monomoy Mechanical offers a wide range of heating, air and plumbing solutions to local homes and businesses. We look forward to every opportunity to connect with members of our community in Harwich and the surrounding area. Our team of local professionals is made up of trained, licensed, and experienced technicians who work hard to satisfy every client in these areas we serve:
- Harwich, MA
- Chatham, MA
- Brewster, MA
- Orleans, MA
- Dennis, MA
- Yarmouth, MA
- Barnstable, MA
- Sandwich, MA
- Mashpee, MA
- Bourne, MA
- Falmouth, MA


A Brief Services Overview
All of the services we provide are geared towards one goal: keeping you comfortable at an affordable price. We value efficient work and quality results, so you can count on us to provide solutions that last.
Heating
Domestic and commercial heating systems come in all shapes and sizes, but our team is ready to handle your concerns no matter how big or small.
Heating Repair
Fast and efficient repairs requires prompt and accurate diagnosis, which is why we are careful and thorough when evaluating each system’s problems.
Heating Installation
Installing a new heater is a complex and high-value operation, so don’t hesitate to turn to your local HVAC professionals when the time comes.
Heating Maintenance
Lubricating parts, cleaning components, and unclogging fuel nozzles are just a few of the items on a basic heating maintenance checklist.

See What Your Neighbors Are Saying
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“Dave is awesome, definitely my go-to guy. He’s done work for me at my business and home. He’s always on time, honest, and very informative. Fits you into his schedule super fast and answers your calls right away. The pricing is very fair!”- Karina H.
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“They installed my new furnace/boiler, replacing a 35-year-old unit. Everyone who worked on the new system was an expert. To me, the install is an engineering work of art. Everything was explained, and they helped me pursue the MASS SAVE rebate as well.”- Peg H.
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“I was very pleased with the techs from Monomoy Mechanical. They were prompt, neat ,and showed concern for my issues.”- David S.
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“They called back in minutes despite the end of the work day and scheduled me for the next morning. The technician, Tim, was very attentive in diagnosing our mini-split problem, and fixed it the same day. His boss Chris was very attentive too. Recommend!”- Ekaterina D.
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“Dave and his crew from Monomoy Mechanical did an excellent job on both helping us pick out a new A/C system and installing it. They even went the extra mile to stay late to make sure we had a working system that night! We couldn’t be happier!”- Bruce H.