Guides / hvac-replacement-cost-guide

HVAC replacement cost guide

Data snapshot 2026-09 · Updated 2026-10-08 · HomeTrueCost

Budget for replacing a US central heating and cooling system. Compare itemized model examples, understand what a furnace and AC replacement includes, and prepare questions for local contractors. These figures are planning assumptions, not a survey of installed prices.

Calculate your cost →

Mid-grade replacement by state

State	Labor	Materials	Permits	Total incl. 10%
Texas	$4,097	$8,176	$270	$13,797$11,950–$15,650 model band
California	$5,223	$8,845	$480	$16,003$13,800–$18,200 model band
Florida	$3,971	$8,175	$360	$13,757$11,950–$15,550 model band
Ohio	$4,573	$7,809	$255	$13,901$12,000–$15,800 model band

3-ton gas furnace + AC, mid-range tier (×1.35), April model factor (×0.95). USD; no sales tax or rebates. Totals show the mid with the model sensitivity band beneath (observed cross-market spread, not quotes). Sources: BLS OEWS + BEA goods-RPP (2026-09-12) · methodology

What this HVAC estimate includes

A straightforward replacement of a central ducted system with usable existing ducts. The gas furnace + AC option covers both units. Labor is an installation/removal allowance; equipment and ordinary installation materials share one line. Permits are an allowance, not your city's actual fee. Every total includes 10% contingency.

Excluded: major duct replacement, electrical-panel upgrades, new gas service or fuel conversion, hazardous-material remediation, structural repairs, sales tax, financing charges, and rebates. Furnace-only, AC-only, ductless mini-split, and geothermal projects need a separate estimate. Known extra work should be quoted separately rather than absorbed into contingency.

Three worked HVAC budget examples

Illustrative model outputs in USD, not actual installations or surveyed prices. All use October (month 10), data snapshot 2026-09-12, and reusable ducts. Links restore the exact inputs; later data updates can change the figures.

Texas: value gas furnace + AC

Texas · 3 cooling tons · tier ×1 · system ×1 · October ×0.95

Labor: $3,035
Equipment/materials: $6,056
Permit allowance: $270
Subtotal: $9,361
Contingency (10%): $936
Total: $10,297

Open these calculator inputs

Ohio: mid-range ducted heat pump

Ohio · 3 cooling tons · tier ×1.35 · system ×1.15 · October ×0.95

Labor: $5,259
Equipment/materials: $8,980
Permit allowance: $255
Subtotal: $14,494
Contingency (10%): $1,449
Total: $15,943

Open these calculator inputs

California: premium dual-fuel

California · 4 cooling tons · tier ×2 · system ×1.25 · October ×0.95

Labor: $12,895
Equipment/materials: $21,839
Permit allowance: $480
Subtotal: $35,214
Contingency (10%): $3,521
Total: $38,735

Open these calculator inputs

How the budget is calculated

Labor starts at $3,500, and equipment/materials at $6,500, for a 3-ton gas furnace + AC reference project. Labor uses the state/national HVAC wage ratio; materials use the state goods-price index. Both are multiplied by cooling tons ÷ 3, the selected tier, system factor, and month factor. A state-adjusted $300 permit allowance is added, followed by 10% contingency. Receipt lines round to whole dollars before subtotal and contingency so the displayed total reconciles.

Baselines, linear capacity scaling, tier factors, system factors, seasonal factors, and permit allowance are HomeTrueCost assumptions. BLS wages are employee wages, not contractor billing rates. BEA goods prices cover consumer goods broadly, not HVAC equipment specifically. The sensitivity band applies cross-state index differences to this model; it is not a confidence interval or a guarantee that local bids will fit.

Prepared by Soufiane at HomeTrueCost. Editorial update: October 8, 2026. Independent HVAC professional review is pending. This tool does not choose equipment, certify efficiency, or calculate heating/cooling loads.

Questions to ask before accepting a quote

What heating and cooling load calculation supports the proposed capacity? Ask for cooling tons and separate heating capacity.
Which indoor/outdoor model numbers, efficiency ratings, controls, and warranties are included?
Are the ducts suitable, and does the price include removal, disposal, permits, electrical connections, and commissioning?
Which exclusions, taxes, and extra-work charges apply? Obtain comparable written scopes from local contractors.
Are any incentives available for this exact equipment and address? Verify eligibility separately; this calculator subtracts none.

A quote can exceed the model because of access, equipment selection, duct condition, local fees, emergency scheduling, or work excluded above. A lower quote also needs its scope checked.

Sources and what they support

BLS Occupational Employment and Wage Statistics: the manifest labels its wage series May 2025, HVAC occupation SOC 49-9021. Used for relative state labor adjustments, not installed prices.
BEA Regional Price Parities: 2024 goods index in the shipped snapshot. Used as a broad geographic price proxy, not a supplier price list.
US Department of Energy: heat pump systems: background on system types and existing ductwork. It does not validate this model's prices or multipliers.

Estimate your furnace and AC replacement budget · Full methodology

What moves the number

Capacity and equipment

Use a contractor's heating and cooling load calculation. The tool scales labor and materials linearly with cooling tons; actual equipment pricing is not necessarily linear. Budget tiers do not specify a SEER2 rating or guarantee operating savings.

System type

The heat-pump ×1.15 and dual-fuel ×1.25 factors are model assumptions applied to labor and materials. They do not establish a market premium or certify cold-climate performance. Compare actual equipment and installation scopes.

Ductwork and site condition

The model assumes reusable ducts and a straightforward replacement. Duct reconstruction, electrical-panel work, fuel conversion, access difficulties, and remediation need separate quotes.

Installation month

Monthly factors are planning assumptions, not measured discounts. April uses ×0.95; June uses ×1.02. Contractor availability and emergency work can change the price independently.

FAQ

Does this estimate cover both a furnace and air conditioner?

The gas furnace + AC option budgets for replacing both as one ducted system with usable existing ducts. It is not a furnace-only or AC-only estimate. The other options use explicit whole-project multipliers.

How is HVAC replacement cost calculated?

The model adjusts a $3,500 labor and $6,500 equipment/materials baseline for state indexes, cooling capacity, budget tier, system type, and month. It adds a state-adjusted $300 permit allowance and 10% contingency. Baselines and multipliers are assumptions, not contractor quotes.

Can I size HVAC from my home's square footage?

No. Ask for a heating and cooling load calculation that accounts for climate, insulation, windows, air leakage, and the home. Cooling tons do not determine furnace heating capacity.

Are ductwork, electrical upgrades, and rebates included?

Major duct replacement, electrical-panel upgrades, fuel conversions, hazardous-material remediation, sales tax, financing, and rebates are excluded. Get those items priced separately. The 10% contingency is not a substitute for known extra work.

Is the displayed range a contractor price guarantee?

No. It is a sensitivity band derived from differences in state wage and goods-price indexes. It is not a confidence interval or a measured local quote range, and bids may fall outside it. The model has not yet been independently reviewed by an HVAC professional.

Changelog

2026-10-08 — editorial refresh (copy/format; figures track the manifest vintage below).
2026-09-12 — v1 — initial guide from BLS OEWS + BEA goods-RPP live manifest.

Estimate only — not professional advice.