Furnace Replacement Cost in Knoxville (2026): Average Price & Estimate

Furnace Replacement Cost in Knoxville

Estimated furnace replacement cost in Knoxville

$2,750–$7,350

Roughly about 8% below the national average.

Affordable labor keeps prices below average.

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Based on Knoxville, TN pricing.

Estimated cost range

$2,750–$7,350

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An estimate for planning, not a quote. Get written quotes from local pros below.

Estimate, not a quote. Local prices vary by contractor and project. These are 2026 estimates for Knoxville, TN. Get written quotes from licensed Knoxville contractors before you budget.

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What to know about furnace replacement in Knoxville

Heat plus humidity in Knoxville makes both cooling capacity and good dehumidification important when picking a system.

What affects furnace replacement cost in Knoxville

Beyond the local market, the same factors that drive furnace replacement cost everywhere apply in Knoxville:

Furnace type: electric, gas, or oil.
Efficiency rating (AFUE).
Furnace size for the home.
Like-for-like versus new ducts or fuel conversion.

Furnace Replacement cost by furnace type in Knoxville

These figures are adjusted for Knoxville pricing (about 0.92x the national average), so they reflect what local homeowners actually pay.

Estimated furnace replacement cost by furnace type in Knoxville (2026)

Furnace type	Typical cost in Knoxville	Notes
Electric	$1,950 to $5,150	installed
Gas (mid-efficiency)	$2,750 to $7,350	The baseline.
Gas (high-efficiency)	$3,600 to $9,550	installed
Oil	$3,300 to $8,850	installed

Frequently asked questions

How much does furnace replacement cost in Knoxville?

In Knoxville, TN, furnace replacement typically costs $2,750 to $7,350 in 2026 for a standard project, about 8% below the national average. Your exact price depends on size, materials, and scope.

Why does furnace replacement cost more or less in Knoxville?

Affordable labor keeps prices below average. Labor rates, permit costs, and local demand are the main reasons Knoxville prices differ from the national average.

Do I need a permit for furnace replacement in Knoxville?

Most furnace replacement projects require a permit. Requirements vary by city and Tennessee jurisdiction, so confirm with your local building department. A licensed contractor usually pulls the permit for you.

When is the best time of year for furnace replacement in Knoxville?

In Knoxville, aim for spring or fall. Summer heat, humidity, and afternoon storms can cause delays on exterior projects, and late summer is peak storm season.

Is furnace replacement cheaper outside Knoxville?

Sometimes. Knoxville runs about 8% below the national average. Nearby smaller towns with lower labor costs can come in cheaper, while denser urban areas often cost more. Always compare quotes from contractors who serve your specific area.