Furnace Installation &
Replacement in Southern NH
Gas, oil, and propane furnaces installed and replaced by licensed NH technicians. Proper sizing, clean installation, and a workmanship warranty on every job.
Gas Furnace Installation & Replacement
A natural gas furnace is the most efficient and cost-effective heating option for most Southern NH homes with gas service. We install high-efficiency models from all the major brands, properly sized so you get the right system, not just the biggest one.
- Gas furnace installation and replacement
- High-efficiency 95+ AFUE models available
- Manual J load calculation sizing
- All permits pulled and inspections handled
- Workmanship warranty on every install
- NHSaves rebates available
Oil & Propane Furnace Installation
Homes without natural gas rely on oil or propane for heating. We install and replace oil and propane furnaces across Southern NH, including conversion work when customers switch fuel types. If you're considering a switch from oil to propane or adding a heat pump as a hybrid backup, we can walk you through all the options. Our technicians are factory-trained and certified on all three major oil burners, Carlin, Beckett, and Riello, so we can match the right burner to your equipment and fine-tune it for optimal efficiency.
- 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 workmanship warranty, no surprises.
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 point-of-sale rebates and help you file the rest.
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, identify all available rebates, 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.