HomeMaintCalcs

HVAC Replacement Cost Calculator — By System Type & SEER

Who this is for: For homeowners facing an HVAC replacement — who want the honest range before getting three quotes.

System type, SEER rating, tonnage and ductwork in — replacement cost range.

Quick answer: HVAC replacement: $2,500–12,000 by system type. 3-ton 16-SEER heat pump: $5,200–13,800 with no ductwork needed. Ductwork adds $2,000. SEER rating and tonnage are the two biggest multipliers.

Expected cost
$9,488
midpoint estimate
Quote range
$5,175–13,800
collect 3 quotes, compare
Ductwork
reused
confirm ducts are leak-free
System (heat-pump, 16 SEER, 3 tons)base range
SEER 16 factor×1.15
Total range$5,175–13,800
Buy in fall or spring: off-season installs run 10–20% under July emergency pricing, and the contractor has time for a real load calc. R-22 refrigerant systems and cracked heat exchangers: replace, don't repair.
Sizing rule of thumb: 1 ton per 500–600 sq ft. Demand a Manual J load calculation from any bidder — same-size swaps ignore insulation, windows and sun exposure.
Core facts
AC only$3,500–7,500
Heat pump$4,500–12,000
Full system$5,000–12,000
Ductwork+$2,000
SEER14 = min · 16 = value · 20 = premium
Status2026 US industry averages compiled from HomeAdvisor, Angi, and contractor quotes. Estimates for budgeting — real quotes depend on location, materials, and job complexity.

How much does HVAC replacement cost?

HVAC replacement runs $2,500–12,000: AC-only $3,500–7,500, furnace-only $2,500–6,500, heat pump $4,500–12,000, full system $5,000–12,000. Higher SEER ratings (+15–50%) and larger tonnage (+15–30%) increase cost. New ductwork adds $2,000. A 3-ton 16-SEER heat pump with no ductwork: $5,200–13,800. Most 2,000 sq ft homes need 3–4 tons.

Common uses

  • Budgeting an HVAC replacement before getting quotes
  • Comparing AC vs heat pump costs
  • Deciding SEER rating level
  • Checking if ductwork is included in quotes

Frequently Asked Questions

How much does HVAC replacement cost?
$2,500–12,000 depending on type: AC-only $3,500–7,500, furnace $2,500–6,500, heat pump $4,500–12,000, full system $5,000–12,000. Ductwork adds $2,000. Higher SEER and tonnage increase cost.
What SEER rating should I choose?
14 SEER is the federal minimum (good for mild climates). 16 SEER is the value sweet spot. 18–20+ SEER for hot climates with high electric rates — the energy savings pay the premium over 8–10 years.
How many tons do I need?
Rule of thumb: 1 ton per 500–600 sq ft. A 2,000 sq ft home: 3–4 tons. Manual J load calculation is the accurate method — any good contractor will do this for free before quoting.
Does HVAC replacement include ductwork?
Usually not. Ductwork replacement adds $2,000–5,000. If your ducts are in good condition, they can be reused. Ask the contractor to inspect ducts for leaks and insulation.
Heat pump vs AC + furnace: which is better?
Heat pump: single system, more efficient in moderate climates (heating + cooling), federal tax credits. AC + furnace: better in very cold climates (below 0°F), lower upfront cost. The tipping point is your winter low temperature.

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Window count, frame material and glazing in — materials + labor itemized.
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