Furnace Installation
in Concord, NH
A new furnace is a long-term investment. We install gas, oil, and propane furnaces throughout Concord with proper sizing, clean ducting, and decades of reliable winter comfort built in from day one.
Furnace Installation in Concord, NH
Natural Gas Furnaces
Modulating 95%+ AFUE gas furnaces from Lennox, Trane, and Carrier. Two-stage and variable-speed options cut operating costs noticeably through Concord's heavy heating season.
Oil Furnaces
For homes without gas service. Common in the older Concord neighborhoods. Modern oil furnaces deliver 85%+ efficiency. Thermo Pride and Williamson are proven workhorses.
Propane Furnaces
Propane furnaces deliver strong heating where natural gas isn't available. Most gas furnaces convert cleanly to LP with the right orifices and conversion kit.
High-Efficiency Options
Condensing 95-98% AFUE furnaces qualify for NHSaves rebates and pay back the efficiency upcharge in 3-5 years through reduced gas bills.

Sized and Installed Right for Concord Homes
The biggest mistake we see on furnace installations is oversizing. A furnace that's too big cycles on and off constantly, creates cold spots through the house, and wears out parts sooner. For every install in Concord we run a Manual J load calculation to match the furnace to your actual heat loss. Accounting for insulation, window exposure, air leakage, and floor plan. The 19th-century Victorians in the South End especially need careful sizing because their original heat-loss patterns don't match modern assumptions. Same care on the ductwork side: we re-evaluate supply and return sizing, fix poorly-designed runs we find from previous installations, and seal duct leaks as we go.
- Manual J load calculation on every install
- Duct inspection and sealing as needed
- High-efficiency options with NHSaves rebates
- Financing available with approved credit
- Full workmanship warranty
- Permitting and inspections handled
Furnace Installation FAQ
How much does a new furnace cost in Concord?
A mid-efficiency gas furnace installation typically runs $4,500-7,000. High-efficiency 95%+ AFUE variable-speed installations run $6,500-10,000 depending on size and ductwork condition. Oil furnaces fall in a similar range.
How long does a furnace installation take?
Most same-fuel replacements are done in one day. Converting from oil to gas (or vice versa) takes 2-3 days because of line runs, venting changes, and potential chimney work.
What size furnace do I need?
Depends on your home's heat loss. Not square footage. A 1,500 sq ft well-insulated home might need a 60,000 BTU furnace; a 1,500 sq ft drafty older Concord Victorian might need 100,000 BTU. We calculate. We don't guess.
Is high-efficiency worth the extra cost?
For most Concord homes with heavy winter use, yes. You recoup the extra cost in reduced gas bills within 3-5 years, with rebates closing the gap faster. High-efficiency furnaces also tend to be quieter and more comfortable.
Furnace Installation in Concord
Free estimates, licensed technicians, and the same family business Concord homeowners have trusted for nearly a century.
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Mon-Fri: 8am-4:30pm
Evenings & Weekends: Emergency Service
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No heat? No hot water? Call 603-623-0412 any time.