HVAC · Franklin, TN
How much does full HVAC system replacement cost in Franklin, TN? (2026)
In Franklin, full HVAC system replacement runs $7,950–$14,700, with most paying around $11,350 — about 1% below the national average. Replacing the complete HVAC system — furnace plus central AC or heat pump — together.
Updated June 2026 · Localized estimate, not a quote
Most homeowners pay around $11,350
- Typical cost
- $11,350
- Labor vs US
- −3%
- Climate
- Mixed
- Local permit
- $225
Refine your estimate
Tune it to your home to narrow the full HVAC system replacement range.
Key takeaways for Franklin
- A full HVAC system replacement in Franklin typically runs $7,950–$14,700, with most homeowners paying about $11,350 — about 1% below the national average.
- The −3% gap between Franklin and national labor rates is the single biggest reason this price isn't the national average.
- Budget about $225 for the local HVAC permit; it's already included above.
- Expect 15–20 years of service, so planning a replacement beats a full-price emergency call.
- Cheapest time to buy: Spring and fall (Mar–May, Sep–Oct) — roughly 5–15% off peak-season pricing.
- Federal 25C/25D tax credits and local utility rebates can lower the net cost — see the rebates section below.
What goes into the price in Franklin
A typical Franklin full HVAC system replacement of $11,350 breaks down roughly like this — materials priced near the national level, labor set by local rates.
| Line item | Franklin 2026 range |
|---|---|
| Materials & equipmentThe equipment and materials themselves — this part barely shifts by location. | $3,100 – $5,800 |
| Labor & installationInstall crew, removal and startup — the part local rates move most. | $4,625 – $8,675 |
| Permit & feesTypical local HVAC permit, scaled to this metro. | $225 |
| Total installed cost | $7,950 – $14,700 |
Split from the Franklin estimate using a 60% local-labor share; line items sum to the total.
Why full HVAC system replacement costs what it does in Franklin
- Franklin's labor rates sit about 3% lower than the national average (based on price levels for the Nashville-Davidson--Murfreesboro--Franklin metro area), pushing the price down.
- Franklin's HVAC permit runs roughly $225, which is already part of the number above.
Full HVAC System Replacement cost by home size in Franklin
A full system (furnace + AC, or a heat pump + air handler) is sized to the whole home. Replacing both together costs more upfront but shares labor, permits, and a single install visit.
| home size | Franklin 2026 range |
|---|---|
| 1,000–1,500 sq ft | $7,000 – $11,800 |
| 1,500–2,000 sq ft | $7,950 – $13,750 |
| 2,000–2,500 sq ft | $9,400 – $16,150 |
| 2,500–3,000 sq ft | $10,850 – $18,600 |
| 3,000+ sq ft | $12,800 – $21,500 |
National size ranges localized to Franklin labor and climate.
Full HVAC System Replacement cost by type in Franklin
| AC + gas furnace (split system) | $7,000 – $12,850 |
| Heat pump system (air-source) | $8,450 – $15,750 |
| Dual-fuel (hybrid heat pump + furnace) | $9,950 – $17,700 |
Adjusted to Franklin from national type-level ranges.
Full HVAC System Replacement cost by efficiency in Franklin
A matched system performs better than mismatched parts. Pick one efficiency tier across both units that suits your climate rather than over-buying on one side.
| Standard (80% AFUE + 14.3 SEER2)Lowest upfront cost | $7,000 – $11,800 |
| High-efficiency (96% AFUE + 16 SEER2)Best long-run value | $8,900 – $15,700 |
| Premium / heat-pump systemTop efficiency + electrification | $11,800 – $21,500 |
Labor vs. materials in Franklin
Install crew, removal, permit & startup — the part Franklin rates move most.
Equipment & materials — priced closer to the national level.
Split based on a typical $11,350 Franklin project; your mix varies with scope.
Skilled installers in the Nashville-Davidson--Murfreesboro--Franklin area earn about $29.4/hr (6% below the US average, per BLS metro wage data) — the local wage is what moves the labor half of your full HVAC system replacement cost.
How we estimate it
| National range | $8,000 – $15,000 |
| Franklin labor adjustment | ×0.97 |
| mixed climate factor | ×1 |
| Local permit | +$225 |
| Franklin estimate | $7,950 – $14,700 |
Promo prices vs. the real cost
HVAC advertising runs on two numbers: the one that gets a tech to your door and the one that finishes the job. Here's what the door-opener figure usually accounts for:
- Service call / diagnostic fee$75–$150
- Financing offers$0 down · 0% APR, 12–60 mo
- "Free" replacement estimate$0 — it's a sales visit
- Seasonal tune-up promo$79–$129
Additional full HVAC system replacement costs to budget for
Only a handful of these will touch your total. Which ones depend on what's already in place and how the crew has to reach it.
| Removal of both old units | $100 – $600 |
| Ductwork repair or replacement | $1,000 – $6,000 |
| Gas line / electrical work | $250 – $1,200 |
| Zoning system | $1,700 – $4,500 |
| Smart thermostat | $150 – $500 |
Typical national add-on ranges; confirm locally during your quote.
What's included
- Thermostat, startup and balancing
- Ductwork inspection and connections
- Furnace/air handler and AC or heat pump
- Full removal of the old system
What affects the cost
- Extent of ductwork repair or replacement
- Whether you choose AC + furnace or a heat pump system
- Zoning and smart-thermostat add-ons
- Total capacity and efficiency tier
Ways to save on full HVAC system replacement in Franklin
- Stack state and utility rebates where offered
- Stick to one efficiency tier that fits your climate
- Avoid premium 'comfort' add-ons you won't use
- Replacing both units together cuts duplicate labor
How long does full HVAC system replacement last in Franklin?
A matched system replaced together tends to last 15–20 years with maintenance.
Service both the heating and cooling sides yearly.
Signs you need full HVAC system replacement in Franklin
- Both the furnace and AC are near end of life
- Your current units are mismatched in age or capacity
- A major repair is due on either unit (replace both to match)
- You're switching fuels or electrifying the whole home
- Comfort and bills have both gotten worse
Repair or replace in Franklin?
Repair if…
- Only one unit is failing and the other is nearly new
- The fault is minor and under warranty
Replace if…
- Both units are 12+ years old
- A compressor or heat exchanger has failed
- You want a matched, higher-efficiency system
Rebates & incentives in Tennessee
The largest 2026 HVAC incentives target heat pumps; other equipment mainly qualifies for utility efficiency rebates.
The federal 25C tax credit (up to $2,000 for heat pumps; $600 for high-efficiency AC or furnaces) and the 25D credit ended December 31, 2025 under the One Big Beautiful Bill Act — neither is available for 2026 installs. The remaining federal help is the IRA Home Electrification & Appliance Rebates (HEAR): up to $8,000 toward a heat pump for households under 150% of area median income, paid at point of sale where a state has launched its program.
Verified July 2026. Rebate budgets deplete and program windows change fast — confirm current amounts and eligibility with your utility and the DSIRE database before you budget. Costadia does not administer these programs.
Cheapest time for full HVAC system replacement in Franklin
Crews are busiest — and priciest — exactly when it's hottest or coldest, since that's when systems fail under load. Book in the mild months and you're negotiating from a position of choice, not a broken furnace.
Why full HVAC system replacement quotes vary — and how to compare them fairly
Two contractors can price the same job thousands apart. Almost always it's the scope each assumed — here's what drives the gap and how to close it.
Why a quote looks high (or low)
- Brand, warranty length and whether startup/commissioning is included all move the number.
- One quote bundles ductwork, electrical, permit and old-unit removal; another quietly leaves them out.
- Equipment tier isn't matched — a 14.3 SEER2 bid will always undercut an 18 SEER2 one for the "same" job.
Get an apples-to-apples bid
- Get at least three written bids before you sign.
- Ask every bidder for the same SEER2/AFUE rating so you compare like for like.
- Require an itemized quote splitting equipment, labor, permit and add-ons.
- Confirm old-unit removal, the permit and startup testing are all included.
Questions to ask Franklin HVAC pros
The only honest way to compare is to hold every quote to one checklist. Start with these.
- 1Did you run a Manual J load calculation to size the system, or estimate from square footage?
- 2What AFUE/SEER2 rating is this unit, and what's the payback vs. the next tier up?
- 3Is removal of the old equipment, the permit, and startup testing included in the quote?
- 4Will my existing ductwork and venting work as-is, or is repair/resizing needed?
- 5What's covered under the labor warranty vs. the manufacturer's parts warranty?
Full HVAC System Replacement in Franklin
How much does full HVAC system replacement cost in Franklin, TN?
full HVAC system replacement in Franklin runs $7,950–$14,700 as of 2026, with $11,350 the figure most homeowners actually land on. That range already accounts for Franklin's labor rates, its mixed climate and local permit costs.
Is full HVAC system replacement more expensive in Franklin than average?
Why the gap? Franklin prices about 1% lower than the national average, and local labor — indexed at 0.97 against the US average — does most of the work., plus a local HVAC permit running about $225.
Do I need a permit for full HVAC system replacement in Franklin?
A HVAC permit is standard in Franklin for this kind of work, at roughly $225. You won't need to add it on top of the estimate above — it's already there.
What affects full HVAC system replacement cost the most?
In plain terms, replacing the complete HVAC system — furnace plus central AC or heat pump — together. Price swings mostly come down to equipment or material grade, the size and complexity of the home, local labor, and the mixed climate zone.
How much should you really budget for HVAC in 2026?
Ask five contractors for an HVAC quote and you'll get five different numbers — usually because they disagree on sizing, efficiency and equipment tier. Here's how our editors think through those trade-offs.
The budget-first case
Size the system to your home with a Manual J calculation and buy the standard efficiency tier (80% AFUE / 14.3 SEER2). In a mild climate the cheaper unit pays off because you rarely run it hard — paying for premium efficiency you won't use is the most common way to overspend.
The longevity case
Brand is a footnote; sizing and install quality write the story. A right-sized mid-tier system that's properly commissioned and serviced once a year will outlive an oversized premium unit that short-cycles itself to an early grave. Put the money into the crew and the setup rather than the nameplate.
The efficiency-first case
High runtime changes the math. In a demanding climate the extra efficiency of a heat pump or a top-tier SEER2/AFUE unit gets paid back month after month on the utility bill, and state and utility incentives can shave the upfront figure further now that the federal 25C/25D credits have expired. Price the lifetime bills, not just the tag, before you default down.
Match the efficiency tier to your climate, insist on a real load calculation, and stack every rebate you qualify for. The expensive mistakes are wrong sizing and a rushed install — not picking the "wrong" brand.
Editorial analysis by Serhat Özçelik, reviewed by Costadia Editorial. These are our own cost perspectives, not third-party endorsements.
How we calculated this estimate
We start with 2026 national full HVAC system replacement ranges compiled from contractor-pricing sources (Angi, HomeGuide, Fixr and EnergySage averages), then localize them to Franklin using the BLS metro wage data labor index (×0.97 here), the IECC mixed-climate factor (×1) and a typical local permit fee (≈$225). Federal incentive details reference the IRS Inflation Reduction Act (25C/25D) and DSIRE.
This is a planning estimate, not a quote.Actual prices vary with your home's condition, equipment grade and contractor — always confirm with licensed local pros before budgeting.
References & data sources
Our Franklin full HVAC system replacement estimate is built from these primary, mostly government sources — not a single aggregator.
- Occupational Employment & Wage Statistics (metro wages) — U.S. Bureau of Labor Statistics.Metro-level trade wages behind each city's labor index.
- Regional Price Parities (state & metro) — U.S. Bureau of Economic Analysis.Regional price levels used where metro wage data is unavailable.
- IECC Climate Zones — U.S. DOE — Building Energy Codes Program.Climate-zone factors applied to weather-sensitive projects.
- Home Energy Tax Credits (25C / 25D) — Internal Revenue Service.Federal rebate and tax-credit figures for eligible upgrades.
- Database of State Incentives for Renewables & Efficiency — DSIRE — NC State University.State and utility incentive programs by ZIP code.
Full HVAC system replacement alternatives in Franklin
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A full HVAC system replacement rarely happens in isolation — these projects commonly come up alongside it.
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