How Much Does Furnace Replacement Cost in NJ?

2026 NJ Furnace Replacement Prices

Here's the straight answer, North Jersey edition: most gas furnace replacements run $5,000–$10,000 installed — equipment, labor, permits, and startup. Standard 80% AFUE furnaces land around $5,000–$8,000; high-efficiency 95%+ AFUE units run $7,000–$10,000+. Essex County contractors report standard gas swaps running $3,500–$7,000 in simpler cases, with North Jersey's NYC-metro labor rates pushing most real jobs into the $5,000+ range. Oil furnaces typically cost more to install and more to run; oil-to-gas conversions add roughly $1,500–$3,500 for gas line work, venting changes, and tank removal.

One caveat that matters: North Jersey is not South Jersey on pricing. South Jersey furnace jobs cluster around $3,500–$10,000; North Jersey's labor rates and older housing stock — tighter basements, trickier venting, more conversions — push typical jobs toward the upper half of every range. The ranges below reflect what North Jersey homeowners actually pay in 2026. Or run your own estimate on our calculator →

Furnace replacement cost by scenario

Like-for-like gas swap, 80% AFUE — $5,000–$8,000. Same fuel, existing ductwork in decent shape, straightforward venting. The most common job in the forced-air neighborhoods of Clifton, Lyndhurst, and the mid-century pockets of every town we serve.

High-efficiency gas, 95%+ AFUE — $7,000–$10,000+. Condensing furnace with PVC venting, condensate drainage, and sealed combustion. Worth it for homes with high heating bills — upgrading from an 80 AFUE to a 96 AFUE furnace can shave $200–$300 per year off a $2,000 gas bill, and qualifying units get NJ Clean Energy rebates up to $700 plus federal tax credits up to $2,000.

Oil furnace replacement — $6,500–$11,000+. Oil equipment costs more, and oil heat costs more to run. If gas is on your street, price the conversion instead — most of the time it's the smarter money.

Oil-to-gas conversion — add $1,500–$3,500 to the furnace cost. Gas line coordination, new venting, condensate management, and oil tank removal or abandonment, permits included. The payback: natural gas typically costs less per BTU than oil, gas equipment needs less maintenance, and the tank liability disappears.

Larger homes / complex installs — 2,500+ sq ft homes, rerouted venting, electrical panel upgrades, or ductwork replacement can push the total past $10,000. We itemize every one of these in the written quote so nothing is a surprise.

What drives the price up or down

Home size sets equipment size — a 1,200 sq ft cape might need 60,000 BTU; a 3,000 sq ft colonial can need 100,000+. Efficiency tier adds 25–40% upfront for 95%+ AFUE, with payback through lower bills and rebates. Fuel and conversion — oil costs more than gas; conversions add upfront but pay back. Ductwork condition — many 1950s–70s NJ ducts leak 20–30% of heated air; sealing or replacement is sometimes the honest recommendation. Venting and site conditions — high-efficiency units need new PVC venting, tight basements slow the job, and buried oil tanks need proper abandonment. Every one of these is visible on our quotes.

Repair vs. replace: the honest math

The rule of thumb: if the repair costs more than about a third of replacement and the furnace is 15+ years old, replacement usually wins. A $600 ignitor on a 10-year-old furnace? Repair it. A $1,800 control board on a 22-year-old unit with a rusting heat exchanger? You're throwing money at a system that's done. Three signals that mean replacement: a cracked heat exchanger (a safety issue — carbon monoxide risk), repeated breakdowns two winters running, and heating bills climbing year over year while the house feels less warm. We'll give you both numbers — the repair and the replacement — and tell you which one we'd pick if it were our house. If your furnace won't turn on right now, run through these checks first.

• Free in-home estimates with firm, written pricing
• Repair-vs-replace math done honestly — both numbers, our real opinion
• Oil-to-gas conversions handled start to finish, permits included
• Rebate and tax-credit guidance on every high-efficiency quote
• No-heat emergencies get priority scheduling, day or night

Comparing heating options? Read our furnace vs. heat pump guide for NJ winters — for some homes, a cold-climate heat pump beats a new furnace. And if you're replacing the whole system, see our AC installation page.

Also Serving Nearby

We replace furnaces across North Jersey — Paterson, Clifton, Passaic, Wayne, Hackensack, Newark, Elizabeth, Teaneck, Union City, and Morristown — or start at our North Jersey HVAC homepage.