Heating Contractor Near You in Southern NH
A.J. LeBlanc Heating answers the phone and schedules Southern New Hampshire heating service as quickly as availability allows. Our HVAC technicians hold EPA Section 608 certification for refrigerant work and separate New Hampshire fuel gas fitter licenses for natural-gas and propane equipment. They repair boilers, furnaces, heat pumps, and other residential heating equipment.
Serving Southern NH for Nearly a Century
A.J. LeBlanc Heating is the heating contractor that Southern NH homeowners have relied on since 1928. We install and service furnaces, boilers, heat pumps, and water heaters across 48 Southern NH communities.
A Trusted Southern NH Choice, Family-Owned Since 1928
Serving 48 NH Towns
Bedford, Manchester, Nashua, Londonderry, Derry, and 35+ more surrounding communities.
Readers' Choice Awards Winner, Four Categories
NH Union Leader Readers' Choice Awards honoree for 14 consecutive years, including four category wins in 2026.
Qualified for Every Heating System
Our HVAC employees hold EPA Section 608 certification and New Hampshire fuel gas fitter licenses. We service gas, oil, propane, and heat-pump systems, with factory training and certification on Carlin, Beckett, and Riello oil burners.
Emergency Service Available
Emergency heating service when you need it. A NH winter without heat is a real emergency.
Furnace and Boiler Installation
We install all types of heating systems including gas furnaces, oil furnaces, gas boilers, oil boilers, and heat pumps.
- All fuel types: gas, oil, and propane, plus electric heat pumps
- All major brands installed
- Proper sizing and load calculations
- NHSaves rebates on qualifying systems
- Permits and inspections handled
Heating System Repair and Maintenance
We service all makes and models of heating equipment. Annual maintenance keeps your system running reliably through NH winters. Ask about our Rate Lock program for discounted off-peak tune-up pricing.
- 24/7 emergency repair service available
- All brands and models serviced
- Hourly billing with a one-hour minimum, no flat-rate book pricing
- No trip charges during business hours
- Annual maintenance available
- Labor warranty on all repairs
How We Price Heating Work
Free Estimates on New Installs
If your furnace, boiler, or heat pump needs replacing, the estimate is free. A Home Comfort Advisor visits your home and gives you a written quote with no obligation.
Hourly Repair Billing, 1-Hour Minimum
Service is billed by the hour with a one-hour minimum. We explain the work, time, and parts included in the repair.
After-Hours Pricing Disclosed Up Front
No trip charges during business hours. After-hours and emergency calls have a premium rate that we disclose before any work begins.
NHSaves Rebate Help
A.J. LeBlanc Heating is a registered NHSaves contractor. On qualifying high-efficiency installs we apply qualifying point-of-sale rebates and help you complete the application for other available programs, which you sign and submit.
No Commission Techs, No Upsell
Our service technicians are not on commission. They are paid to fix the problem or recommend the right-size system, not to sell you more than you need. No pressure sales, ever.
Reviews From Southern NH Homeowners
LeBlanc Heating installed a new system 2000 boiler; water heater and a new power vent in my house. They did an excellent job removing the old system and installing the new one. The service techs were professional and the workmanship was outstanding. I am extremely pleased with how efficient the new system operates and it is so quiet it is hard to tell it is running. I chose A.J. LeBlanc Heating because of their reputation and all the positive reviews I read. They were on time for the installation and completed the work on time and as promised. I would strongly recommend A.J. LeBlanc Heating to anyone looking for a reputable company to handle their plumbing and heating needs.
Dan WellsBoiler Installation customerI had gas furnaces installed at two of my properties. I was pleased with every aspect from the original onsite estimate, to interaction with office staff, to the installation. Top notch all the way.
Gary McGuireHeating Service customerA.J. LeBlanc Heating diagnosed a problem with my new furnace which they had not installed and fixed it permanently, have not had an issue since. Very professional, resourceful and tenacious in problem solving. I am so glad that I was referred to LeBlanc Heating. I have been a customer ever since and will continue to be.
Linda HealeyFurnace Installation customerRead more reviews on our testimonials page.
Free Estimate From Neighbors You Can Trust
Nearly 100 years in Southern NH means we have earned the community's trust. Call us for a free estimate.
Frequently Asked Questions
What towns do you serve for heating?
A.J. LeBlanc Heating serves 48 towns across Southern NH, including Bedford, Manchester, Nashua, Londonderry, Derry, Hudson, Merrimack, Milford, Goffstown, and many more.
Do you offer emergency heating service?
Yes. We offer emergency heating service during NH winters. Call 603-623-0412 and we will respond as quickly as possible.
What heating systems do you install and service?
We install and service gas furnaces, oil furnaces, gas boilers, oil boilers, heat pumps, ductless mini splits, and water heaters. All makes and models.
How long have you been in business?
Family-owned since 1928, A.J. LeBlanc Heating brings four generations of local experience to heating installation and service across Southern NH.
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.