Best Furnace Replacement Companies in Franklin, TN
What to look for in Furnace Replacement in Franklin
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 Franklin: 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 4.9★ (340+)Yelp 4.7★ (75+)
Typical Furnace Replacement costs in Franklin, TN (2026)
Last updated
Estimated ranges for Franklin, 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 Franklin compares to 90+ US cities: HVAC Cost Index →
Why Franklin's summer swings put extra wear on HVAC systems
Franklin's hot, humid summers and population growth push home cooling systems to run harder for longer each season. Searching for the best HVAC companies in Franklin, TN starts with checking cooling capacity, maintenance history, emergency response times, and warranty options.
Which Franklin, TN HVAC questions most homeowners ask before hiring?
- 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 I find a heat-pump or mini-split specialist in Franklin?
- Look for technicians with installation experience on the chosen equipment type and manufacturer-dealer status when available. Check for NATE certifications and references for similar homes in Franklin. Request photos of past installs and ask about warranty handling and SEER2 compliance for new outdoor units.
- What evidence should I look for when hiring an indoor air quality (IAQ) service in Franklin?
- Prefer providers who perform diagnostic testing such as humidity and particle counts and who recommend targeted fixes. Look for explanations of ventilation, dehumidification, and filtration options. Ask for before-and-after test results and whether proposed solutions meet Tennessee energy code or manufacturer requirements.
- Does Tennessee's 2021 IECC or SEER2 rules affect equipment choices in Franklin?
- Yes. Tennessee adopted the 2021 IECC, and the Southeast minimum SEER2 levels apply to many systems under 45,000 BTU. That affects recommended replacements and efficiency ratings. Ask providers how proposed equipment meets local code and the expected SEER2 rating for the model quoted.
- 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 Franklin, TN listed here. They send quotes back — no obligation.