Professional Furnace Sales, Installation and Repairs in Southern Maine and Seacoast New Hampshire

A new, high-efficiency furnace installed by P. Gagnon & Son can help you reduce your energy usage and lower your fuel bills by 30 percent or more—and make your home more comfortable, too.


Furnaces heat air and a blower fan pushes it through your home via a system of ducts. Today’s furnaces include variable speed capabilities, durable heat exchangers, microprocessor-based controls and high-pressure flame-retention burners designed to drastically improve efficiency while keeping your home warm and comfortable.


Available in gas or oil-fired versions, the furnaces P. Gagnon & Son installs have minimum AFUE ratings of 80 percent, depending on the type of system—many are much higher.


P. Gagnon offers a great selection of both oil and gas-fired furnaces, and our knowledgeable and experienced team can help you choose the right size and type of equipment for your home. We sell, install and service top-performing brands.

thermopride premiere oil furnaces

  • Large, easily accessible inspection ports
  • Sound- and vibration-absorbing blower mounts
  • All controls enclosed in vestibule for safety
  • 5-year Peace of Mind warranty
  • 10-year Peace of Mind Plus warranty

rinnai direct vent wall furnaces

  • Significant energy savings
  •  Sealed combustion minimizes indoor heat loss and ensures safety
  •  Zero clearance from intake air
  •  Dependable, low-maintenance performance
  •  Up to 83 percent AFUE efficiency

Contact us to get our best price on furnaces. Installation, maintenance and repair services are all available. P. Gagnon, serving South Berwick, Sanford, York, Dover, Durham, Hampton, Rochester and surrounding towns in Southern Maine and Seacoast New Hampshire.