Ballpark Lab

HVAC Cost Calculator / Washington

Washington HVAC estimate

HVAC Replacement Cost in Washington (2026)

HVAC replacement in Washington runs roughly 28% above the national average on installed labor, which we apply to every system type — heat pump, AC + gas furnace, or ductless mini-split. Last updated July 10, 2026.

A typical 2,000 sq ft heat pump replacement in Washington

2,000 sq ft, ducted heat pump, standard efficiency tier, ducts in good shape — sizes to about 3.5 tons of cooling capacity in Washington. A clean baseline before you customize.

$9k – $18k
Confidencehigh

Material takeoff

Cooling capacity
4 tons

Cost breakdown

Ducted heat pump (SEER2 ~15.2, installed)
$6k – $13k
Old-system removal & disposal
$300 – $800
Mechanical permit allowance
$250 – $800
Total
$9k – $18k
Most likely
$12,864
  • Cooling load ≈ 2,000 sq ft × 22 BTU/sq ft for a temperate climate, ×1.00 for insulation, age, ceilings, windows, and sun; heating load uses 35 BTU/sq ft.
  • This is a screening estimate, not an ACCA Manual J — a contractor must run a room-by-room load calculation before install.
  • "standard" tier ≈ SEER2 ~15.2 cooling / 80% AFUE heating.
  • Excludes gas-line work, flue relining, asbestos abatement, and structural chases or returns for new ducts.
  • Replacing an HVAC system in Washington needs a mechanical permit (usually pulled by the contractor); refrigerant work requires an EPA 608-certified tech, and many inspectors ask for a load calculation on heat pump or furnace swaps.

Estimate your HVAC in Washington

Home & system

We size the system Manual-J-style from your square footage and climate, then price it for your state.

Conditioned floor area — what the system actually heats and cools.

Sets your climate zone and labor market.

A heat pump replaces both the AC and the furnace.

Mini-splits skip ducts entirely — the others need them.

Fine-tune the load

Pre-filled with typical values — adjust to match your home.

Average, in feet — taller rooms hold more air.

Estimated total
$8,768–$18,176
Heat pump · 3.5 tons
Low $9kMost likely ~$12,864High $18k

$9k – $18k · $6 per sq ft of home

How we sized it

  • Cooling load: 44,000 BTU → 3.5 tons
  • Heating load: 70,000 BTU
Confidencehigh

Material takeoff

Cooling capacity
4 tons

Cost breakdown

Ducted heat pump (SEER2 ~15.2, installed)
$6k – $13k
Old-system removal & disposal
$300 – $800
Mechanical permit allowance
$250 – $800
Total
$9k – $18k
Most likely
$12,864
  • Cooling load ≈ 2,000 sq ft × 22 BTU/sq ft for a temperate climate, ×1.00 for insulation, age, ceilings, windows, and sun; heating load uses 35 BTU/sq ft.
  • This is a screening estimate, not an ACCA Manual J — a contractor must run a room-by-room load calculation before install.
  • "standard" tier ≈ SEER2 ~15.2 cooling / 80% AFUE heating.
  • Excludes gas-line work, flue relining, asbestos abatement, and structural chases or returns for new ducts.
  • Replacing an HVAC system in Washington needs a mechanical permit (usually pulled by the contractor); refrigerant work requires an EPA 608-certified tech, and many inspectors ask for a load calculation on heat pump or furnace swaps.

Compare systems

Heat pumpSelected
$9k – $18k
AC + gas furnace
$12k – $24k
Ductless mini-split
$12k – $22k
AC only
$7k – $15k
Furnace only
$6k – $11k

The same home in each system — same size, climate, ductwork, and state.

iBallpark estimate for planning, not a bid. Sizing is a screening calculation from your square footage and climate — a contractor must run an ACCA Manual J load calculation before install. Excludes gas-line work, flue relining, asbestos abatement, and structural chases for new ducts. Get 3 local quotes before signing.

Frequently asked questions

How much does a heat pump cost in Washington?
A typical 2,000 sq ft ducted heat pump replacement in Washington runs about $9k – $18k, with labor roughly 28% above the national average.
Is a heat pump cheaper than AC + furnace in Washington?
The same home with a separate AC and gas furnace runs about $12k – $24k in Washington, versus $9k – $18k for one heat pump that does both jobs.
Do I need a permit for HVAC replacement in Washington?
Replacing an HVAC system in Washington needs a mechanical permit (usually pulled by the contractor); refrigerant work requires an EPA 608-certified tech, and many inspectors ask for a load calculation on heat pump or furnace swaps.

HVAC costs in other states