High-efficiency heating
Every BTU, working for you. 96%+ efficient.
Older furnaces send 20–40 cents of every heating dollar up the flue. A modern condensing furnace converts 96%+ of fuel to heat — steadier warmth, quieter cycles, and a permanently smaller gas bill.
The problem
What the old way costs you.
Your flue is your biggest leak
A 70–80% AFUE furnace literally exhausts a fifth or more of the fuel you pay for. Every heating season, that waste compounds.
On/off blasts, uneven rooms
Old single-stage furnaces slam on at full power, overshoot, and shut off — hot-cold swings, cold floors, loud ducts.
The 3 a.m. failure
Heat exchangers and igniters fail hardest on the coldest nights. Past 15 years, you're running on borrowed time.
The Nu way
What you get instead.
96%+ AFUE efficiency
Condensing technology captures heat from the exhaust itself. Nearly every dollar of fuel becomes warmth in your rooms.
Modulating, even heat
Variable-stage burners and ECM blowers run low and steady — no blasts, no cold spots, barely a sound.
Safer by design
Sealed combustion draws outside air and vents directly out — no backdrafting worries, cleaner indoor air.
Pairs with a heat pump
Dual-fuel setups run the heat pump most days and fire the furnace only in deep cold — the cheapest possible heat, automatically.
What's included
Done right, end to end.
- Free heating assessment with fuel-cost comparison (gas vs. dual-fuel vs. heat pump)
- 96%+ AFUE condensing furnace right-sized to your home
- Eligible heating incentives identified for your address — filed by us in MA & NY
- Licensed local installation, code-compliant venting and commissioning
- Smart thermostat configuration
- Manufacturer-backed warranties up to 10–12 years, registered for you
Efficiency you feel on every heating bill
Stepping up from an old 80% AFUE furnace to a 96%+ condensing unit means roughly 16 cents more heat from every fuel dollar — compounding all winter, every winter. Your plan prices that against your real fuel costs, pairs it with smart-thermostat and duct-sealing wins where they pay off, and flags any utility rebate your address may qualify for.
See how we capture rebatesFAQ
High-Efficiency Furnaces — straight answers.
Furnace or heat pump — how do I choose?
What does 96% AFUE actually mean for my bill?
Can I keep my existing thermostat and ducts?
Ready to see the numbers for high-efficiency furnaces?
Get your free Home Efficiency Plan — the systems worth upgrading, conservative savings estimates for your address, and every rebate you qualify for.
Talk to a real efficiency advisor — no pressure, no door-knockers.