Furnace Replacement Cost in Philadelphia & Montgomery County (2026)

Philadelphia Area Average (2026)

$3,800 – $10,000

Mid-efficiency 80% AFUE: $3,800–$5,500 | High-efficiency 96%+ AFUE: $5,500–$10,000

Average Furnace Replacement Cost in Philadelphia

According to Angi, gas furnace replacement in the Philadelphia area typically costs $3,800 to $10,000 installed. HomeAdvisor's 2026 national data reports a national average of $4,807 (range: $2,824–$6,888). Philadelphia-area labor rates run higher than the national average.

High-efficiency models (96%+ AFUE) carry higher upfront costs but can reduce heating bills by $300–$600/year in a typical Philadelphia winter — often recovering the cost difference within 5–8 years.

Furnace Type	Typical Installed Cost (Philadelphia)
80% AFUE mid-efficiency (standard)	$3,800 – $5,500
96%+ AFUE high-efficiency	$5,500 – $8,000
Modulating/variable-speed high-efficiency	$7,000 – $10,000
Furnace + AC replacement (same time)	$7,500 – $14,000

What Affects the Price

Efficiency rating (AFUE): Higher efficiency = higher equipment cost but lower operating cost. 96%+ models require PVC condensate venting vs. standard flue pipe.
Furnace size (BTU): Correctly sized per Manual J load calculation. Over- or undersized units cause comfort and efficiency problems.
Venting changes: Switching from 80% to 96% requires new PVC vent — add $200–$600 for venting modifications.
Coil replacement: If replacing furnace but keeping existing AC, the evaporator coil often needs replacement — add $500–$1,000.
Thermostat: Smart thermostat compatible with new systems — add $150–$350 installed.
Access and labor: Tight mechanical rooms, attic installations, or code upgrades add labor time.

Replacing Furnace and AC Together

If your AC is also aging (10+ years), replacing both systems at the same time typically saves $500–$1,500 vs. two separate visits. Angi reports the combined average at $7,500, with a range of $5,000–$12,500. Matching equipment also ensures compatibility and warranty compliance.

Frequently Asked Questions

How much does furnace replacement cost in Philadelphia?

According to Angi, furnace replacement in Philadelphia typically costs $3,800–$10,000 installed. HomeAdvisor's 2026 national data shows an average of $4,807, with a typical range of $2,824–$6,888. Philadelphia-area labor is 10–15% above the national average.

How long does a gas furnace last?

Most gas furnaces last 15–20 years with proper maintenance. If your furnace is over 15 years old and needs a major repair, replacement is usually the better financial decision.

What's the difference between 80% and 96% AFUE?

AFUE measures efficiency — 80% means 80 cents of every dollar of gas becomes heat. A 96% furnace wastes only 4 cents. High-efficiency models cost more upfront but save $200–$600/year in fuel in a Philadelphia winter, with payback in 5–8 years.

Do I need a permit to replace a furnace in Pennsylvania?

Yes, most Pennsylvania municipalities require a mechanical permit for furnace replacement. McCorry pulls all required permits as part of the installation.

What brands does McCorry install for furnaces?

We install York, Goodman, and Carrier — all brands with strong dealer support networks in the Philadelphia area and parts availability when something needs repair down the road.

Price ranges based on 2026 data from Angi and HomeAdvisor. Philadelphia-area costs typically run 10–15% above national averages.