Best Furnace Replacement Companies in Brentwood, TN
What to look for in Furnace Replacement in Brentwood
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 Brentwood: 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 1 contractor below publishes: Verify your state's HVAC contractor license through the state licensing board before paying a deposit.
Top picks
- NATE: ✓
- Financing: ✓
- Years: 25+
Google 4.8★ (115+)Yelp 4.3★ (15+)
Typical Furnace Replacement costs in Brentwood, TN (2026)
Last updated
Estimated ranges for Brentwood, TN. Actual cost varies with home size, equipment, and scope — always request a written quote for your job.
| Service | Typical range |
|---|---|
| Furnace replacement (installed) | $2,650–$7,550 |
| High-efficiency 95%+ AFUE upcharge (over standard 80%) | $710–$1,750 |
| Gas line + venting modification (if repositioned) | $265–$1,050 |
| Furnace + AC dual-system replacement (installed) | $7,100–$15,950 |
See how Brentwood compares to 90+ US cities: HVAC Cost Index →
Best HVAC companies in Brentwood, TN recommend seasonal tune-ups because hot, humid Tennessee summers and occasional winter cold put heavy strain on heat pumps and split systems in Brentwood. For that reason, the best hvac companies in brentwood tn recommend seasonal tune-ups to keep efficiency high, prevent midseason failures, and maintain warranty coverage. Homeowners often schedule maintenance in spring and fall to reduce repair costs and extend system life.
How quickly can Brentwood homeowners expect emergency HVAC service, and who handles big permits?
- 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.
- What vetting steps should Brentwood homeowners take before hiring an HVAC contractor for a major replacement?
- Verify the contractor’s Tennessee license status, EPA 608 certification, and proof of insurance. Request written, permit-ready proposals describing equipment models and SEER2 ratings. Check recent local reviews and ask for references from similar Brentwood installations.
- Do projects over $25,000 in Brentwood require a specific HVAC license or permit?
- Yes. Projects with combined materials and labor over $25,000 require a Tennessee CMC-C mechanical contractor license issued by the Tennessee Board for Licensing Contractors. That license is needed to sign and permit large, code-compliant HVAC replacements in Brentwood.
- Who is allowed to pull permits for large HVAC replacements in Brentwood?
- A contractor holding a Tennessee CMC-C license or a licensed firm subcontracting to a CMC-C holder may pull permits. Homeowners should request the contractor’s license number and verify it with the Tennessee Board for Licensing Contractors before signing a permit-ready contract.
- 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 Brentwood, TN listed here. They send quotes back — no obligation.