Review my HVAC quote
HVAC quotes are sold at the kitchen table, often in an afternoon, and the single most important item — a real load calculation that sizes the equipment for your house — is almost never on the page. Oversized equipment short-cycles, costs more, and dehumidifies poorly.
Free red-flag scan first. Full report $12 for one estimate, $19.99 to compare up to three.
Typical cost range
$5,000 – $18,000
A full furnace + AC changeout commonly runs $8,000–$16,000; a heat pump system $9,000–$20,000.
Normally includes: Load calculation, equipment, line set, refrigerant, electrical, duct connections, thermostat, permits, and startup.
By work type
- Furnace and air conditioner replacement$8,000 – $16,000
- Heat pump system (ducted)$9,000 – $20,000
- Ductless mini-split$4,000 – $14,000
- Air conditioner only$5,000 – $11,000
- Ductwork replacement or sealing$2,500 – $12,000
National editorial benchmark ranges, adjusted in your report by state cost index and scope. Reviewed 2026. Estimates only — not a bid, appraisal, or valuation.
What we check on your hvac bid
- Manual J load calculation, not sizing based on the old unit
- Exact model numbers for condenser, coil, and furnace or air handler — and whether they are a matched AHRI pair
- SEER2 / HSPF2 / AFUE ratings stated, not just "high efficiency"
- Line set: replaced, flushed, or reused — critical when changing refrigerant type
- Ductwork condition, static pressure, sealing, and any return-air undersizing
- Permit, electrical work, condensate handling, and startup/commissioning
- Warranty registration, labor warranty length, and available rebates or tax credits
Most commonly left out
- Manual J load calculation
- New line set or documented flush
- Return air and duct sizing corrections
- Permit and inspection fees
- Condensate pump, pan, and safety switch
- Warranty registration with the manufacturer
Questions homeowners ask
How do I know if my HVAC quote is oversized?
Ask for the Manual J load calculation. If the contractor sized the system by matching the old equipment or by square footage alone, the number is a guess. Your review flags whether sizing evidence appears anywhere in the proposal.
Why do HVAC bids vary so much?
Equipment tier, efficiency rating, and how much of the surrounding work is included — line set, ductwork, electrical, permit, and commissioning. Two bids on the same house can differ by $6,000 purely on scope.
Got the estimate in front of you?
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Start my free scanWhat does it cost in your state?
State-adjusted hvac price ranges, so you can sanity-check the number before you sign.
Other trades
Home Project Copilot provides AI-assisted informational analysis based on the information submitted by the homeowner. It does not provide professional engineering, architectural, legal, inspection, construction, or code-compliance advice and does not certify the quality or compliance of any contractor's work. Homeowners should consult appropriately licensed professionals when necessary.