Furnace Replacement Cost (2026 Guide)
What drives the cost of a furnace replacement and what to compare.
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What drives the price
Cost depends on furnace type (gas, electric, oil, high-efficiency condensing), BTU capacity, venting, ductwork condition, thermostat and any code upgrades such as combustion air.
FAQ
What affects furnace replacement cost?
Efficiency level, BTU size, venting (PVC vs metal), duct condition and whether electrical or gas line work is needed.
How long does a furnace last?
Typically 15–20 years with annual maintenance.
Do high-efficiency furnaces cost more?
Yes, but they can reduce gas use; the payback depends on your climate and gas prices.