Furnace Installation &
Replacement in Southern NH
A.J. LeBlanc Heating installs and replaces gas, oil, and propane furnaces across Southern New Hampshire. We size the system for the home, complete a clean installation, and back the work with our five-year heating and air-conditioning workmanship warranty.
Gas Furnace Installation & Replacement
For homes with natural-gas service, a high-efficiency gas furnace remains a dependable option for winter heat. A.J. LeBlanc Heating installs all major furnace brands, with New Hampshire-licensed fuel gas fitters handling natural-gas and propane equipment. We size each system for the home's heating needs, ductwork, airflow, venting, and available space, then review current efficiency and rebate options.
- Gas furnace installation and replacement
- High-efficiency 95+ AFUE models available
- System sizing based on the home, with a detailed heating-load calculation when needed
- Required permits pulled and inspections handled
- Five-year workmanship warranty on every installation
- NHSaves rebates available
Oil & Propane Furnace Installation
Homes without natural gas may use oil or propane furnaces. A.J. LeBlanc Heating installs and replaces both, including conversion work when a customer changes fuel. We can also compare a furnace with a heat-pump pairing. On oil-fired equipment, our technicians are factory-trained and certified on Carlin, Beckett, and Riello burners and set up combustion within the equipment specifications.
- Oil furnace installation and replacement
- Propane furnace installation
- Oil-to-gas or oil-to-propane conversions
- Hybrid furnace and heat pump systems
- Annual service and tune-ups
- 24/7 emergency furnace repair
Furnace Installations
Furnace Brands We Install & Service
Goodman
Goodman offers gas furnaces, central air conditioners, heat pumps, and air handlers across a range of efficiency levels. A.J. LeBlanc Heating installs and services Goodman equipment throughout Southern NH.
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Amana
Amana offers gas furnaces, central air conditioners, and heat pumps. Select registered models include limited lifetime coverage, and A.J. LeBlanc Heating explains the exact model, registration requirements, and warranty terms in the proposal.
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Rheem
Rheem offers furnaces, air conditioners, heat pumps, and several types of water heaters. A.J. LeBlanc Heating selects and services the equipment by application, not simply because the products share a brand name.
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American Standard
American Standard offers furnaces, heat pumps, air conditioners, and air handlers across several efficiency and comfort levels. A.J. LeBlanc Heating installs and services the brand throughout Southern NH.
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BoschPlatinum Dealer
Bosch offers IDS ducted heat pumps, mini splits, furnaces, and boilers. As a Bosch Platinum Dealer, A.J. LeBlanc Heating matches the equipment to the home and explains model-specific performance and warranty coverage before installation.
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Carrier
Carrier offers furnaces, central air conditioners, heat pumps, air handlers, and ductless systems. A.J. LeBlanc Heating installs and services Carrier equipment throughout Southern NH.
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Trane
Trane offers furnaces, heat pumps, air conditioners, and air handlers for ducted heating and cooling systems. A.J. LeBlanc Heating installs, maintains, and repairs Trane equipment throughout Southern NH.
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York
York offers air conditioners, heat pumps, furnaces, and air handlers for ducted home-comfort systems. A.J. LeBlanc Heating installs and services York equipment throughout Southern NH.
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Lennox
A.J. LeBlanc Heating installs and services Lennox furnaces, air conditioners, and heat pumps. We select the model around the home's load, existing ductwork, efficiency goals, and budget.
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Thermo Pride
Thermo Pride builds oil furnaces for ducted heating systems. A.J. LeBlanc Heating installs and services Thermo Pride equipment, with technicians trained and certified on Carlin, Beckett, and Riello oil burners.
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Maytag
Maytag-branded heat pumps, air conditioners, and furnaces are available for selected projects. A.J. LeBlanc Heating explains the current model and its exact manufacturer warranty before installation.
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Williamson-Thermoflo
Williamson-Thermoflo offers gas and oil boilers, steam boilers, and gas furnaces. A.J. LeBlanc Heating installs and services the equipment and matches it to the home's fuel and heat-distribution system.
Learn moreFurnace FAQ
How much does furnace installation cost in NH?
A gas furnace replacement in Southern NH typically runs $3,875 to $7,900 installed, depending on the efficiency rating and any ductwork modifications needed. We provide free written estimates covering all equipment, labor, permits, and our five-year heating and air-conditioning workmanship warranty, with no surprise charges.
How long does furnace installation take?
Most furnace replacements are completed in one day. We remove the old unit, install the new system, test all controls and safety systems, and walk you through the thermostat before we leave.
What brands do you install?
We install Goodman, Rheem, Bosch, Amana, American Standard, Carrier, Thermo Pride, and other major brands. We'll recommend the right model for your home based on size, efficiency goals, and budget.
Are there rebates for high-efficiency furnaces?
NHSaves utility rebates are available for qualifying high-efficiency heating equipment. We apply your qualifying point-of-sale rebates and help you complete the application for other available programs, which you sign and submit.
Do you handle the permit?
Yes. We pull all required permits and schedule inspections with the local building department. You don't need to do anything.
My furnace stopped working, do you offer emergency service?
Yes. We provide 24/7 emergency furnace repair. Call 603-623-0412 any time.
Get a Free Furnace Estimate
We assess your home, recommend the right system, review available rebates and apply eligible point-of-sale savings, and give you a written quote upfront. No pressure.
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.