P Gagnon & Son

P Gagnon & Son is a heating oil and propane supplier serving York County in Maine, and Strafford and Rockingham counties in New Hampshire. Based in South Berwick, the company has operated continuously since 1904, making it one of the oldest fuel providers in the region. With 492 reviews yielding a 4.4-star average, the contractor serves communities including Sanford, York, Dover, Durham, Hampton, Rochester and surrounding towns. The company maintains standard business hours Monday through Friday from 8 AM to 4:30 PM, with weekend delivery available for will-call accounts.

What distinguishes P Gagnon & Son is their written service guarantee and a referral program offering up to $100 for both the referrer and new customer. The company also participates in Maine rebate programs, with incentives ranging from $100 for water heater installations to $5,000 for farm equipment upgrades. Their technicians collectively bring 250 years of combined experience in repairing, maintaining and installing furnaces, boilers, water heaters and programmable thermostats, and they service equipment from multiple major manufacturers.

Customer reviews highlight specific team members who handled emergency situations. One reviewer described calling 5 or 6 times during winter 2023-2024 for furnace shutoffs, with technicians arriving no matter the time or day. The same customer noted their system performed flawlessly through a particularly cold winter in 2024-2025 after fall tank repairs. Another reviewer mentioned Mike helping select an appropriate boiler for their space, while Carolyn handled service coordination and communication throughout an installation project.