Furnace Replacement Cost Calculator
Estimate the total cost of replacing your furnace based on fuel type, efficiency, and home size.
Furnace Replacement Cost Calculator
Select your preferred fuel type and efficiency level for a personalized cost estimate.
Frequently Asked Questions
How much does a new gas furnace cost?
A new gas furnace costs $2,500–$10,000 including installation, depending on efficiency rating. Standard efficiency (80% AFUE) runs $2,500–$5,000, while premium high-efficiency (96%+ AFUE) costs $6,000–$10,000.
What efficiency furnace should I buy?
In cold climates, a high-efficiency furnace (90%+ AFUE) pays for itself in energy savings within 5–8 years. In mild climates, a standard-efficiency unit may be more cost-effective since heating costs are already low.
Does furnace size matter?
Yes — an undersized furnace runs constantly and cannot keep up, while an oversized unit cycles on/off too frequently, wasting energy and shortening its lifespan. Use our Furnace Sizing Calculator for the right size.
Are there tax credits for new furnaces?
Yes. Gas and oil furnaces with 95%+ AFUE qualify for a $600 federal tax credit under the IRA. Heat pump systems qualify for up to $2,000. Many states offer additional rebates.
How long does furnace installation take?
A straightforward furnace replacement takes 4–8 hours. If ductwork modifications, fuel line changes, or electrical upgrades are needed, it may take 1–2 days.
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