Licensed and insured, we operate in the states of Massachusetts and New Hampshire


Home Heating Systems

Installation, maintenance, and repair services improve the energy efficiency of your home and reduce heating costs. learn more

Air Conditioning

Central AC Systems

Efficient and affordable central air conditioning systems improve indoor air quality and help you beat the heat. learn more


All Your Plumbing Needs

From emergency plumbing services to complete plumbing system renovation and remodeling, we do it all. learn more


We Are Where You Are

Massachusetts and southern New Hampshire residents rely on Main Stream Mechanical. learn more

All Your Plumbing, Home Heating, and Central AC Needs!

From Emergency to Scheduled Service, Home Cooling in the Summer and Frozen Pipe Thawing in Winter, We Do It All

Main Stream Mechanical is a full service plumbing, heating and air conditioning company serving homeowners in Massachusetts and Southern New Hampshire. 

As Your Home Comfort Specialists, we are dedicated to providing reliable, cost-effective solutions that best fit your needs and expectations.

Our technicians are expert, professional and responsive. They take pride in their trade, and this is evident with the craftsman-like quality that they deliver.  We dispatch our technicians from several locations so that we can provide prompt customer service.

Our sales force takes a comprehensive approach when working with our customers. We take the time to understand your needs and develop solutions that work.

As a National Grid Value Plus Installer (VPI), we specialize in converting oil customers to natural gas.  Please see our Oil To Gas Conversion page for additional information.

We hope that you will take a moment to read our customer testimonials and also check our reviews on Angie’s List.

We welcome the opportunity to work with you on your next project, installation or repair. 

Have a question, feel free to give us a call – we’re happy to help.

Mastercard, Visa and American Express accepted Third-party financing options available.

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Check Out Our Current Specials!