Count on us for around-the-clock, 24-hour emergency service from our certified technicians-just one part of the full-service difference.


P.Gagnon & Son gives you a range of choices for protecting your price for heating fuel and for controlling your winter fuel bills.


Our service technicians have the expertise to install, maintain, and repair virtually any make or model system you have or want in your home.


Expert Heating and Cooling System Installation and Repair of Top-Name Brands in Southern Maine and Seacoast New Hampshire

P. Gagnon & Son employs some of the most experienced heating and cooling service technicians in our area. Combined, they have more than 250 years of experience in repairing, maintaining and installing equipment.

Our veteran techs can handle any repair or maintenance challenge on systems old or new. In addition to expert repair, we install new, high-efficiency heating and cooling systems by quality manufacturers.

Our service technicians are committed to keeping you comfortable and safe all year. Long-time customers have learned they can depend on P. Gagnon to come through with expert service when they need it the most. Next time you need a heating or cooling system repair or maintenance, or if you’re ready to replace your old system, contact us.

Get a FREE estimate

To learn more about P. Gagnon & Son and how we can improve your comfort and lower your heating and air conditioning costs, contact us today. Serving York County in Maine and Strafford and Rockingham counties in New Hampshire.