Heat Pump vs. Gas Furnace in Westchester County — Which Is Actually Cheaper to Run?

A real-numbers comparison for Westchester homeowners — install cost, monthly bills, lifespan, and rebates — to settle whether a heat pump or gas furnace makes more sense in 2025.

Published 2025-12-02 · Bravo Mechanical, Westchester County, NY

Quick answer: For a typical 2,000–2,500 sq ft Westchester County home in 2025, a cold-climate heat pump costs about $200–$500/year more to operate than a high-efficiency gas furnace at current Con Edison rates — but it also handles cooling, qualifies for $4,000–$10,000 in rebates, and avoids the $2,000–$4,000 upcoming gas-line surcharges as NYS pushes electrification. For most Westchester homeowners replacing in 2025, a heat pump (or hybrid system) wins on total cost of ownership.

Annual operating cost — real Westchester numbers

System Heating cost (Oct–Apr) Cooling cost (May–Sep) Annual total
--- --- --- ---
95% AFUE gas furnace + 16 SEER AC $1,400–$1,900 $480–$720 $1,880–$2,620
80% AFUE older furnace + 13 SEER AC $2,100–$2,800 $560–$840 $2,660–$3,640
Cold-climate heat pump (whole home) $1,800–$2,400 $440–$680 $2,240–$3,080
Hybrid (heat pump + gas backup) $1,300–$1,800 $440–$680 $1,740–$2,480
Oil boiler + window AC $2,800–$4,200 $300–$500 $3,100–$4,700
> Pricing and incentive availability vary by equipment, home conditions, utility program rules, and current market costs. This guide is for planning only; final pricing requires an on-site assessment.

*Based on 2025 Con Edison rates ($0.30/kWh delivered) and NYSEG natural gas pricing.*

Install cost comparison

System Installed After rebates
--- --- ---
95% AFUE gas furnace + 16 SEER AC $14,000–$20,000 $13,200–$19,400
Cold-climate ducted heat pump $18,000–$28,000 $11,000–$19,000
Cold-climate ductless mini-split (4–6 zones) $18,000–$28,000 $11,500–$20,000
Hybrid system (HP + furnace) $20,000–$30,000 $13,000–$22,000

Why "more expensive to run" is misleading

Three factors tilt the equation toward heat pumps:

1. No second AC system to buy. A gas furnace doesn't cool. You're also buying a $5,000–$8,000 AC. A heat pump does both for one price. 2. 2025 rebate stack. $4,000–$10,000 off, only available now. Federal 25C is set to expire after 2032. 3. NYS gas pressure. New construction can't have gas after 2026 in NYC; Westchester is next. Con Edison gas rates have risen 28% in 5 years and are projected to keep climbing as the customer base shrinks.

When a gas furnace still makes sense

You replaced your AC in the last 3 years
You have an oversized, well-zoned, recent (<5 yr) gas system
You're selling the house in <2 years
Your home has propane only and electrical service is severely undersized

When a heat pump is the obvious choice

Both heating and cooling need replacement
You currently have oil heat (skip the new oil tank, save $)
You're staying 5+ years
You qualify for HEEHRA income-based rebates
You want zoned comfort

When a hybrid (dual-fuel) is the smartest call

This is what we install most often in Westchester:

Heat pump handles 85% of the heating year (above 25°F)
Existing or new gas furnace handles the coldest 15% (below 25°F)
Lowest operating cost
Best resilience (two heat sources)
Qualifies for partial rebates

Westchester-specific notes

Sound Shore (Rye, Mamaroneck, Larchmont): salt-air coating is non-negotiable on heat pump condensers
Northern Westchester (Bedford, Katonah, Yorktown): propane is expensive — heat pump payback is faster
Yonkers, Mount Vernon, New Rochelle: older electrical service — budget for panel upgrade ($2,500–$5,500)
Scarsdale, Bronxville: pre-war homes often best with hybrid or ductless mini-split

Get a side-by-side quote for both systems — (914) 361-9142.

Request service or a free written estimate or call (914) 361-9142. Serving all of Westchester County, NY.