Furnace replacement costs $2,000 to $5,400 on average for gas, electric, oil, or propane heating systems. A high-efficiency gas furnace costs $3,300 to $6,900 installed. New furnace prices depend on the system size, efficiency, brand, fuel type, and install labor.
Replace a furnace when the current unit is more than 15 years old and requires frequent fixing, or when repairs cost more than half the replacement cost.
Signs a furnace is going out:
A furnace lasts 15 to 30 years on average, depending on the fuel type, brand, usage, and maintenance frequency. Electric furnaces typically outlast gas, propane, and oil furnaces by 5 to 10 years.
Average furnace lifespan by type
Replacing or installing a new furnace takes 4 to 18 hours on average, depending on the fuel type, size, and complexity. Extra time applies for modifying ductwork, electrical, or gas lines, adding vents or zoning, or retrofitting a larger furnace.
Options to pay for a new furnace include:
The differences between a gas, oil, and electric furnace are their fuel source, heating power, and operating costs.
Boilers circulate water or steam, furnaces circulate hot air, and heat pumps circulate refrigerant to provide heating.
Furnace replacement quotes are typically free. When getting furnace estimates, use this checklist:
Choose HVAC installers with certifications from:
When looking to hire the best furnace contractor near you, ask them the following questions:
Furnace installers don’t expect a tip and it's not customary. However, tipping $10 to $20 per person is a nice gesture when installers do a great job.
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