HVAC, Plumbing &
Electrical in Southern NH
Four trades. One company. 98+ years serving Southern NH. Heating, A/C, plumbing, and electrical from our licensed, background-checked team.
Everything Your Home Needs
Heating
We install and service gas, oil, and propane furnaces, boilers, and heat pumps. Emergency heating repair is available 24/7.
Heating ServicesAir Conditioning
We install and maintain central A/C, ductless mini splits, and heat pumps. Our active programs include Mitsubishi Diamond Dealer, Bosch Platinum Dealer, Daikin Comfort Pro, and LG Pro Dealer Platinum.
A/C ServicesPlumbing
Our licensed plumbers handle kitchen, bathroom, and new-construction plumbing, along with drain cleaning, water heaters, and emergency repairs.
Plumbing ServicesElectrical
Our licensed New Hampshire electricians handle panel upgrades, standby generators, EV chargers, lighting, and electrical repairs throughout Southern NH.
Electrical Services
Why Customers Choose A.J. LeBlanc Heating
A.J. LeBlanc Heating has been serving Southern NH families since 1928, four generations of the same family, the same values, and the same commitment to doing the work right. The company has grown from a small heating operation into a full-service HVAC, plumbing, and electrical contractor, but it still operates the way it always has.
- 98+ years serving Southern NH families
- More than 30,000 customers across the region
- EPA-certified HVAC technicians and New Hampshire-licensed fuel gas fitters, plumbers, and electricians
- Licensed, background-checked team, our own in-house employees, not subcontractors
- Readers' Choice winner: HVAC, plumbing, electrical & generators
- Mitsubishi Diamond, Bosch Platinum, Daikin Comfort Pro & LG Pro Dealer Platinum dealer; NHSaves registered contractor
Schedule Service or Request an Estimate
A furnace tune-up, a new heat pump, new bathroom plumbing, or a standby generator: our in-house teams can coordinate the work. One call, one company, one standard.
Get in Touch
Fill out the form and we'll get back to you. Usually the same business day. For emergencies, call us directly.
Contact Information
Mon-Fri: 8am-4:30pm
Evenings & Weekends: Emergency Service
24/7 Emergency Service
No heat? No hot water? Call 603-623-0412 any time.