Best Furnace Replacement Companies in Nashville, TN
What to look for in Furnace Replacement in Nashville
Furnace replacement is a 15-year decision — installer authorization and labor-warranty length matter as much as the equipment itself. A premium furnace installed by an unauthorized shop loses both manufacturer-warranty coverage and the labor-warranty backstop on the install.
- Furnace replacement specialization. Provider lists full furnace replacement (not just repair) as a service line — heat-load calc, gas-line work, venting, condensate handling for high-efficiency.
- Manufacturer authorization. Named factory-authorized dealer (Carrier, Trane, Lennox, Bryant, Rheem, Goodman, York). Unlocks the extended parts warranty (typically 10 years vs the 5-year baseline).
- Labor warranty length. Multi-year labor warranty on the install — measures the installer's confidence in their own workmanship. 5-year is competitive; 10-year is best-in-class.
Verify before you book
- Active manufacturer-dealer status in the OEM's directory — we accept self-claimed.
- Whether the labor warranty applies to the specific equipment SKU you're quoted — some warranties are dealer-funded, some manufacturer-funded.
- Pulled permits for the install — required in most jurisdictions; some shops skip them. Always ask for the permit number after the work.
Furnace Replacement in Nashville: dealer authorization + warranty
Furnace replacement separates pros from generalists on three published facts: manufacturer authorization tier, labor warranty length, and financing terms. Here is what each of the 4 contractors below publishes: Verify your state's HVAC contractor license through the state licensing board before paying a deposit.
Top picks
- Warranty: 10-Year
- Financing: ✓
- Years: 60+
Google 4.8★ (3,910+)
- NATE: ✓
- Financing: ✓
- Years: 85+
Google 4.7★ (1,440+)
- Mfg dealer: Mitsubishi Elite Contractor Dealer
- NATE: ✓
- Financing: ✓
- Years: 45+
Google 4.8★ (1,020+)Yelp 3.4★ (25+)
- Mfg dealer: Carrier Authorized Dealer
- Financing: ✓
- Years: 65+
Google 4.8★ (265+)Yelp 2.6★ (5)
Typical Furnace Replacement costs in Nashville, TN (2026)
Last updated
Estimated ranges for Nashville, TN. Actual cost varies with home size, equipment, and scope — always request a written quote for your job.
| Service | Typical range |
|---|---|
| Furnace replacement (installed) | $2,450–$7,000 |
| High-efficiency 95%+ AFUE upcharge (over standard 80%) | $660–$1,650 |
| Gas line + venting modification (if repositioned) | $245–$985 |
| Furnace + AC dual-system replacement (installed) | $6,600–$14,800 |
See how Nashville compares to 90+ US cities: HVAC Cost Index →
Heavy summer humidity and rapid seasonal temperature swings shorten equipment life and raise mold and corrosion risks, driving repair demand. Homeowners seeking reliable cooling often search for the best HVAC companies in Nashville, TN to prioritize maintenance, timely repairs, and proper dehumidification.
Which permits, certifications and local requirements matter for HVAC work in Nashville, TN?
- Replace a gas furnace with another gas furnace, or switch to a heat pump?
- Stay with gas if your winter design temp is below 0°F and you have cheap natural gas — heat pumps still derate in extreme cold. Switch to a heat pump if winters are mild AND electricity isn't 2× the national rate AND a state rebate stacks. Run 10-year operating costs, not just install price.
- What AFUE rating should I look for in a new gas furnace?
- 95–98% AFUE for cold climates (condensing furnace; requires PVC venting and a condensate drain). 80% AFUE is acceptable in mild climates where the high-efficiency install premium doesn't pay back. Skip the 92–94% band — the price-to-efficiency curve is bad there.
- How do the 2021 IECC and SEER2 minimums affect equipment choices in Nashville?
- The 2021 IECC adoption and Southeast SEER2 minimums influence replacement equipment selection and permit requirements. Contractors commonly specify SEER2-rated systems to meet code. Confirm proposed SEER2 ratings on written estimates and permit plans.
- When is a city or county mechanical permit required for an HVAC replacement or mini-split install in Nashville?
- Permits are required when the scope alters ducting, involves structural changes, or when local code requires inspection for replacements. For larger projects, permits support code compliance and final inspections. Contractors typically pull permits; always verify who will apply.
- How can a homeowner verify a Nashville contractor's IAQ and dehumidification experience?
- Check for published project examples, manufacturer-dealer credentials, and photos of installed whole-home dehumidifiers or ERV/HRV systems. Review Google feedback mentioning dehumidification or mold control, and request references for similar humid-climate projects.
- How do I get a quote from these HVAC companies?
- Submit one request on this page and we send it to the vetted HVAC pros in Nashville, TN listed here. They send quotes back — no obligation.