Heating Installations, Repairs, and Maintenance Services


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

Gas Boiler Replacement and Installation

Massachusetts and New Hampshire homeowners and facility owners rely on Main Stream Mechanical's expertise in gas boiler system management. You can, too.

Gas boiler replacement, or choosing to install a gas boiler in place of another type of heating system, can be a difficult decision. Which is the right kind of gas boiler for you? What's the difference between a cast iron boiler or a fire-tube boiler? Which manufacturer is best? What is the perfect gas boiler size? After all, a system too small won't heat adequately, and a system too large can be a money pit...

Main Stream Mechanical can help. With over 20 years providing all types of heating services from planning and layout design to equipment selection and installation, our team has developed the expertise that comes only with unparalleled experience. Your gas boiler installation--whether it's a replacement or a new install--is in good hands with Main Stream.

Natural gas boilers have many advantages over other types of heating systems, including:

  • Availability - As natural gas is piped in to your home or facility by underground gas lines, there is no need to worry about running out during a particularly nasty winter storm. Relying on oil heat can be dangerous during winter; what happens if your tank runs out and the oil delivery trucks are straight out?
  • Cost - Not only is natural gas efficient, it also costs less than oil. Gas boiler systems, in general, cost less than oil boilers.
  • Environmental Impact - Natural gas is cleaner to burn, produces less soot, and has a much greener environmental footprint than oil.
  • Convenience - Gas boilers are available in a number of different sizes, with state-of-the-art, easy control for temperature monitoring, automation, and overall operation.

Why Trust Main Stream Mechanical with Your Gas Boiler Services?

Commitment to Quality

Massachusetts requires HVAC contractors to be licensed. Still, many other companies hire unlicensed technicians that fail to match our standards of quality. Unlike these contractors, Main Stream Mechanical is fully licensed to ensure the highest quality services for our customers.

Expert Recommendations

If you're looking to install a new gas boiler, it can be difficult to determine which system is safe, reliable, and energy efficient. Our Comfort Specialists and technicians will lend their expertise to help you choose the perfect equipment for your specific situation. Main Stream participates in Gas Networks, Mass Save and Cool Smart rebate and financing programs and will be able to assist you with these programs.

Adequately Insured

Our technicians are very responsible and we are fully insured.  Main Stream adheres to trade practices that are in compliance with Local, State and Federal regulations.

Schedule Your Gas Boiler Installation Today!

For gas boiler replacement or installation, call (978) 834-0849 today. We travel throughout the greater Haverhill, Newburyport, Boxford, Topsfield, Bedford, Lexington, and Arlington areas in MA, and the greater Derry, Seabrook, Stratham, Dover, Exeter, and Rye areas in NH. See our full service area list for towns and cities not noted; chances are we travel to yours, too!

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