HVAC cost calculator
HVAC System (AC + Heat Pump) cost estimator
Estimate full HVAC system cost — central AC + furnace OR all-electric heat pump — with state-adjusted 2026 pricing and HEEHRA / utility rebate overlay. Answer 4 quick questions and get a state-adjusted cost breakdown.
What HVAC system are you installing?
Frequently asked questions
People also ask about hvac cost
Fact-checked, dated answers to the questions homeowners ask most often before pricing out a hvac project.
- How much does it cost to replace an HVAC system?
- HVAC replacement: $7,500–$18,000. Heat pump $12K–$22K but stacks $8K–$14K rebates in NE / income-qualified.
- Heat pump or central AC + furnace — which is better in 2026?
- Heat pump wins on TCO for most US homes in 2026, especially after stacking state, utility, and HEEHRA rebates (25C expired).
- Do I need a permit to replace my HVAC?
- Yes — mechanical permit $150–$450 in all 50 states. System-type conversion adds electrical permits.
- How long does an HVAC system last?
- AC/heat pump: 12–18 yrs. Gas furnace: 18–25 yrs. Boiler: 25–35 yrs. Annual service extends life 30–40%.
- What's the biggest rebate stack on a heat pump conversion?
- MA / CT / RI / ME / NH heat pump conversions can stack up to ~$12,000 in 2026: HEEHRA $8K + utility $3–4K (federal 25C expired 2025).
State-specific hvac cost guides
Long-form 2026 guides with metro-level labor rates, permit details, and budgeting tips — written specifically for 6 states.
HVAC
HVAC Cost in Arizona 2026 — Phoenix Summer-Load Math + APS/SRP/TEP Heat-Pump Rebates
Real 2026 Arizona HVAC pricing for 110°F+ summer load — central AC ($7K-$14K) vs SEER2 18+ heat pump ($13K-$24K). APS / SRP / TEP rebate math, demand-charge avoidance, and why high-SEER pays off faster in AZ than anywhere else.
Read the guide
Insulation
Insulation Cost in Colorado 2026 — Xcel Energy Heat Pump-Ready Rebate Stack, Black Hills Energy Programs, and the High-Altitude R-Value Math
Real 2026 Colorado insulation pricing — attic, walls, crawlspace, whole-home weatherization. Xcel Energy Heat Pump-Ready rebate, Black Hills Energy + CORE Electric stack, and why CO's high-altitude design temps require R-60 attic as table-stakes.
Read the guide
HVAC
HVAC Cost in Florida 2026 — Humidity-Dominated Sizing, FPL/Duke/TECO Rebates, and Why FL Heat-Pump Math Beats Both Texas and Georgia
Real 2026 Florida HVAC pricing — central AC + heat pump systems sized for FL humidity loads ($6.5K-$22K). FPL / Duke Energy / TECO heat-pump rebate stack, latent-load dehumidification math, and why FL heat-pump payback beats neighboring states.
Read the guide
Furnace
Furnace Cost in Massachusetts 2026 — Oil-to-Heat-Pump Conversion Math + Mass Save 75-100% Stack
Real 2026 Massachusetts heating-system pricing — oil-to-heat-pump conversion ($13K-$22K before incentives, $4K-$10K after Mass Save stack), boiler replacement ($9K-$16K), gas furnace ($5.5K-$11K). Why MA has the best heat-pump conversion economics in the US.
Read the guide
Insulation
Insulation Cost in Massachusetts 2026 — The Mass Save 75-100% Rebate Playbook
Real 2026 Massachusetts insulation pricing — attic, walls, crawlspace, whole-home weatherization. The Mass Save 75-100% rebate playbook (most US homeowners pay $0-$1,200 out-of-pocket), prerequisite for heat-pump conversion, and how to game the free home energy assessment.
Read the guide
Furnace
Furnace Cost in Minnesota 2026 — Cold-Climate Heat Pump Math at −20°F and Why Dual-Fuel Wins
Real 2026 Minnesota heating-system pricing — gas furnace ($6K-$12K), cold-climate heat pump ($14K-$24K), dual-fuel ($17K-$28K). Xcel Energy + CenterPoint rebate stack, MN HEEHRA launch math, and why dual-fuel beats both single-system paths in MN.
Read the guideMore on hvac cost & decisions
Long-form 2026 guides on timelines, material comparisons, ROI, and financing for hvac system (ac + heat pump) projects.
Insulation
Attic Insulation Cost Guide 2026 — by R-Value, Material & State + Full Incentive Stack
Complete 2026 attic insulation cost guide. Total cost by square footage, R-value target, and material (cellulose / fiberglass / spray foam). HEEHRA rebate, the expired 25C credit, and the climate-zone R-value chart.
HVAC
Central AC vs Heat Pump — 2026 Cost, Operating-Cost & 12-Year ROI Comparison
Apples-to-apples 2026 cost comparison: central AC + furnace replacement vs single-system heat pump. Install cost, operating cost in 4 climates, the now-expired federal 25C credit, and the 12-year ROI verdict.
Furnace
Furnace AFUE Rating Explained — 2026 Standards, Operating-Cost Math, and What to Spec
What is AFUE? 2026 federal minimum: 81% for gas furnaces. Operating-cost math at 80% / 90% / 96% AFUE, and when high-efficiency pays back now that the 25C credit has expired (Dec 31, 2025).
HVAC
Geothermal Heat Pump Cost Guide 2026 — Install, Economics After 25D Expiry & True 15-Year ROI
Complete 2026 geothermal (ground-source) heat pump cost guide. Install cost by loop type, the federal 25D credit (expired Dec 31, 2025), operating cost vs air-source, and the 15-year ROI math.
Estimate full HVAC system cost — central AC + furnace OR all-electric heat pump — with state-adjusted 2026 pricing and HEEHRA / utility rebate overlay. Our 2026 hvac cost model combines state-specific labor + materials data with a quality-tier multiplier and a 3-input scope wizard, so the band you see reflects YOUR specific project — not a national average. Replacement timelines: central AC swap 1 day; furnace swap 1–2 days; full split-system replacement 2–3 days; heat-pump install 2–4 days (longer in cold-climate states needing supplemental electric strip heat). Add 1–2 weeks lead-time for utility-rebate paperwork pre-approval. Whatever you do, don't budget against a 2019-2021 number — 2022-2024 construction inflation was 18-30% and only partially mean-reverted.
How this calculator works
- What HVAC system are you installing? — Pick from: Central AC + gas furnace, Heat pump (all-electric), Mini-split (ductless heat pump), Dual fuel (heat pump + furnace), Central AC only. The choice maps to a specific cost band in our 2026 dataset.
- How large is the conditioned area? — Pick from: Under 1,500 sqft, 1,500–2,500 sqft, Over 2,500 sqft. The choice maps to a specific cost band in our 2026 dataset.
- Single-stage / two-stage / variable-speed? — Pick from: Budget (single-stage), Mid-range (two-stage), High-end (variable-speed). The choice maps to a specific cost band in our 2026 dataset.
- Pick your state — HVAC System (AC + Heat Pump) cost varies materially by state — California and New York run ~40% above the national base, midwest states ~15% below. Our state multiplier adjusts the 3-input base estimate to your local labor + materials market.
- Review the range, not a single number — 2026 hvac pricing is too project-specific for a single number to be honest. We give you a low–high band that covers ~70% of realistic 2026 quotes for that scope in that state. Treat the midpoint as your planning anchor, the upper bound as your contingency floor.
When to use this vs. skip it
Pre-quote sanity check
Run this BEFORE the first contractor walks your property. Knowing the realistic 2026 range for your hvac project (state-adjusted) keeps you from getting baseline-shifted on the first quote.
Comparing 2-3 written quotes
If one of your contractor quotes lands more than 25% above our state-adjusted band, request a line-item breakdown — that's almost always the gap between "fair" and "padded."
Budgeting a future hvac project
Most homeowners budget against a 2019-2021 number they remember. 2022-2024 saw 18-30% labor and materials inflation. Run our numbers so your budget reflects 2026 reality.
Right-sizing a renovation loan
Borrowing too little forces emergency credit mid-project at 22-29% rates. Our estimate + your contingency (we recommend 15%) sizes the financing correctly the first time.
Common mistakes homeowners make
- ×Skipping: The federal 25C credit expired Dec 31, 2025 — compare heat pumps and gas systems on gross cost, HEEHRA eligibility, state/utility rebates, and operating cost.
- ×Skipping: In cold-climate states (MN/WI/ND/ME/MT/NH/VT), spec a cold-climate-rated heat pump (CCHP) with backup electric strip heat OR keep a gas furnace as backup for dual-fuel resilience below ~5°F.
- ×Skipping: Manual J load calc ($150–$400 from a 3rd-party HVAC consultant) saves more than its cost — most contractors oversize systems by 25–40%, hurting humidity control AND efficiency.
- ×Skipping: Stack state credits, utility rebates, and HEEHRA POS rebate (if income-qualified). Don't assume your contractor knows the full stack — bring a printout from /state-utility-rebate-lookup.
- ×Skipping: Heat pump SEER2 16+ and HSPF2 8+ is the 2026 efficiency sweet spot — beyond that, marginal payback >12 years for most climates.
- ×Accepting the first contractor quote without 2-3 written comparisons.
- ×Forgetting the 10-15% contingency line — every 2026 hvac project has at least one mid-job surprise.
- ×Underweighting the permit + inspection timeline; permits run 1-4 weeks BEFORE work begins in most U.S. cities.
Last updated · Reviewed by the HavenCostGuide methodology desk
HVAC cost by state
See state-specific cost ranges and FAQs for hvac system (ac + heat pump) projects.