Furnace Replacement Cost in Crossville, TN: What You’ll Pay in 2026

A furnace-only replacement in Crossville typically runs about $4,500 installed at Crossville Heating & Cooling, and a full heating and cooling system runs $7,900 to $18,600. Which one you need depends mostly on how your house heats today. Cumberland County splits almost evenly: about 48% of homes heat with electricity and about 42% with natural gas. A gas home with a healthy air conditioner can often replace just the furnace. In an electric home, the unit in the closet is usually the indoor half of a heat pump system, so the job is usually the whole system. Below are our published prices, what moves a quote, and the incentives that still apply in 2026.

What does a furnace replacement cost in Crossville?

Replacing just the furnace typically costs about $4,500 installed at Crossville Heating & Cooling. Replacing the full system runs $7,900 to $18,600 installed depending on the tier, and the current ranges are always on our pricing page. The spread is wide because “furnace” means two different jobs in this county. Census figures put about 48% of Cumberland County homes on electric heat and about 42% on natural gas. If you heat with gas, a furnace-only swap that keeps your ductwork and air conditioner is a normal job at about $4,500. If you heat with electricity, the indoor and outdoor units of a heat pump are matched, so replacing one alone rarely makes sense.

The three system tiers differ mostly in labor coverage and included maintenance, not in the equipment. If you plan to stay in the house fifteen years, the longer labor warranty is worth more to you than to someone planning to sell in three.

How does that compare with national furnace cost estimates?

Carrier’s cost guide puts the average gas furnace at $3,800 to $12,000 including installation, and our furnace-only price of about $4,500 sits near the low end of that range. National figures describe a like-for-like furnace swap: the old unit comes out, a similar one goes in, and the ductwork, venting and air conditioner stay. A local quote can land higher than a national average for three reasons:

• A heat pump home is replacing a system, not a furnace. The indoor and outdoor units are matched, so the quote usually covers both.
• Ductwork isn’t in most online estimates. We publish full duct replacement at $6,100 to $12,000 and duct sealing at $500 to $1,700.
• Venting, gas line and code work are site-specific. An older home may need changes a calculator can’t account for.

A national figure is a reasonable starting point for the simplest job, and a quote that runs higher should tell you which of these items it includes.

Are there tax credits or rebates for a new furnace in 2026?

There’s no federal tax credit for a furnace installed in 2026. The IRS says the 25C Energy Efficient Home Improvement Credit covers “improvements made through December 31, 2025,” and the 25D Residential Clean Energy Credit ended on the same date. Some cost guides and quotes still mention a $600 or $2,000 federal credit, so if one appears on a 2026 quote, ask about it before you count on it.

Heat pumps are different. TVA EnergyRight offers a rebate of up to $800 on a qualifying heat pump, and Volunteer Energy Cooperative offers heat pump loans at 8% interest for up to 10 years, paid on your VEC power bill. Neither applies to a gas furnace. TVA requires rebate work to be done by a member of its Quality Contractor Network, whose contractors are approved by TVA and your local power company, and VEC’s loan program points to the same list of TVA-qualified contractors. A contractor listed in one town may not be listed in yours. Ask your power company to confirm an installer’s status before you sign.

What moves your price?

Six things account for most of the difference between one Crossville quote and another: the type of replacement, sizing, efficiency, ductwork, warranty coverage and refrigerant.

• Replacement type. A direct swap that reuses existing connections costs less than a modified replacement that changes configuration, fuel type or equipment location. Our system replacement page covers the full-system side.
• Sizing. Equipment should be sized to the house with a load calculation, not a square-footage rule of thumb. Cumberland County’s winter design temperature is 14°F in the ENERGY STAR reference guide, and that’s the number the calculation works from.
• Efficiency level. Gas furnaces run from 80% to 98.5% AFUE in Carrier’s lineup. Higher-efficiency condensing models cost more up front and need different venting.
• Ductwork condition. Leaky or undersized ducts undercut any new system. Sometimes sealing is enough and sometimes replacement is the better spend.
• Warranty and labor coverage. This is the main difference between our three system tiers.
• Refrigerant. Heat pumps and air conditioners built since 2025 use R-454B or R-32, though older R-410A stock can still be installed under EPA’s 2026 rule. When you compare quotes, ask which refrigerant each one uses.

Should you repair or replace your furnace?

Replace when a repair would cost close to half the price of a new system, when the furnace is past about 15 years, or when the same fault keeps coming back after service. That’s Carrier’s rule of thumb, and Carrier says a well-maintained gas furnace should last 15 or more years. A single failed capacitor on an eight-year-old system is a repair, and our flat-rate price for a capacitor is $140 to $285. A thermostat runs $250 to $800 or more depending on the model. A second major repair on a system past its expected life is usually the point to ask for a replacement quote.

If your system quit in a cold snap and you’re deciding under pressure, get the diagnosis first and the replacement quote second. They’re two separate decisions, and financing means the timing doesn’t have to make the choice for you.

How do you compare furnace replacement quotes?

Ask every contractor for the same four things: the installed price with model numbers, what the labor warranty covers and for how long, whether ductwork is included, and what happens to the price if the install turns out more complex than the walkthrough suggested. Quotes that answer all four can be compared line by line.

Crossville Heating & Cooling has served Crossville since 1982 and publishes its price ranges up front. We hold Tennessee HVAC license #81014 and complete most HVAC changeouts within 48 hours. We primarily install Tempstar and Carrier, and we can install any brand you want. Our furnace installation page has more on the equipment, and you can reach us at (931) 484-0004 for a quote.

Frequently Asked Questions

How much does it cost to replace an HVAC system in a 2,000 square foot house in Crossville?

Our published full-system range is $7,900 to $18,600, and the warranty tier moves the price more than square footage does. Size still matters, but equipment is sized from a load calculation that accounts for insulation, windows, ductwork and Cumberland County’s 14°F winter design temperature, not from floor area alone. Ask for the load calculation with your quote.

Is it cheaper to replace just the furnace and keep the AC?

Yes, up front. A furnace-only replacement typically runs about $4,500 installed at Crossville Heating & Cooling, against $7,900 and up for a full system. The deciding factor is the equipment you keep. If your air conditioner is under ten years old and healthy, the furnace-only route usually makes sense. If it’s the same age as the furnace, you may be buying a second system within a few years. Ask for a quote both ways and compare them.

How fast can you replace a furnace in Crossville?

We complete most HVAC changeouts within 48 hours. When a system fails in a cold snap, the diagnosis comes first and the replacement quote follows. Financing is available, so the timing doesn’t have to force the decision.

How much does it cost to have someone come out?

Our standard service call is $79. After-hours calls carry an additional fee that we quote before dispatching. Diamond maintenance members pay no service fee and no after-hours fee.

How long does a furnace last?

Carrier says a well-maintained gas furnace should last 15 or more years. Regular maintenance helps a system reach that range, and our Platinum and Diamond memberships include two HVAC maintenance visits a year.