Heat pump · 1.5-ton
1.5-Ton Heat Pump Cost
A 1.5-ton (18,000 BTU/hr) heat pump is a small-capacity unit suited to roughly 600-900 sqft — small homes, condos, and additions. Plan-level installed cost, sizing guidance, and the rebates that still apply in 2026.
Quick answer: $5,500-$11,000 installed; single-zone mini-split often the better value at this size. Refine by state and home below.
Estimated installed cost
$14,275
Typical range $8,825 – $24,650 · Ducted central heat pump (3-ton, ~1,500–2,200 sqft)
Low
$8,825
Best case
Mid
Typical$14,275
Typical
High
$24,650
Worst case
Net cost after estimated incentives
Mid: $11,275$4,825 – $23,650
Net = gross minus rebates currently available. Federal 25C, 25D, 30D, 25E credits expired (OBBBA, 2025) and are not subtracted. 30C (EV charger) still applies through 2026-06-30 with eligible-tract rules.
Itemized cost breakdown
Click a row for math & sources| Line item | Low | Mid | High |
|---|---|---|---|
Equipment | $5,200 | $7,800 | $10,500 |
Labor State labor multiplier applied (CA). | $3,229 | $4,306 | $5,741 |
Permit & inspection | $150 | $300 | $600 |
Job complexity adjustment Reflects installation difficulty, home type, and timing. | $0 | $620 | $5,440 |
Possible panel upgrade 100A may support heat pump with load calculation; depends on other loads | $675 | $1,250 | $2,375 |
| Total | $8,825 | $14,275 | $24,650 |
Rebates & tax credits
- TECH Clean California - Heat Pump HVACStateRebate
Monthly energy impact
Increase+$16/ mo
Likely increase between $11 and $21 per month vs. your current fuel.
Panel upgrade likelihood
Medium risk100A may support heat pump with load calculation; depends on other loads
Estimated adder included: $675 – $2,375.
- Is this quote for ducted, ductless, or dual-fuel?
- What heating load (Manual J) calculation did you use, and can I see it?
- Is the equipment cold-climate rated (HSPF2 / capacity at 5°F)?
- Is ductwork inspection, sealing, or replacement included?
- Is electrical work, including any required circuit or panel work, included?
- Are permits and inspection included?
- Which rebates and tax credits are included, and who files for them?
- What is the manufacturer warranty and labor warranty?
- Is there a sound-rated outdoor unit option, and what is the dB rating?
- What sizing methodology did you use (Manual S equipment selection)?
What can change this price
- Estimates are planning ranges, not contractor quotes. Actual prices depend on your home, local labor rates, equipment, code requirements, utility rules, and contractor availability.
- DOE & NREL Residential Heat Pump Cost Studies— National Renewable Energy Laboratory, reviewed 2026-05-01
- EIA Electricity Retail Sales (state-level)— U.S. Energy Information Administration, reviewed 2026-04-01
- BLS OEWS — Electricians (47-2111)— U.S. Bureau of Labor Statistics, reviewed 2026-05-01
Frequently asked questions
How much does a 1.5-ton heat pump cost installed?
A 1.5-ton (18,000 BTU/hr) heat pump runs $5,500 to $11,000 installed nationally, per NREL benchmark data and 2026 installer surveys. At this small capacity a single-zone ductless mini-split is often the better value, landing in the lower half of that band. Cold-climate (NEEP-listed) equipment adds $1,500 to $3,000. State labor rates shift the range — California, Hawaii, and the Northeast run highest.
What size home does a 1.5-ton heat pump heat and cool?
A 1.5-ton unit is sized for roughly 600 to 900 sqft in a moderate climate (IECC zones 3 to 5), which makes it a fit for small homes, condos, additions, garages, or a single open zone. Tighter, newer spaces may be comfortable toward the top of that range; older, leaky rooms toward the bottom. A Manual J load calculation by a licensed contractor is the proper sizing method — the per-sqft rule of thumb is a starting point, not a spec.
Is a mini-split better than a ducted system at this size?
Often yes. For 600 to 900 sqft, a single-zone ductless mini-split usually beats a ducted central system on both upfront cost and efficiency, because there are no ducts to install or seal and the inverter compressor modulates well at low loads. ENERGY STAR notes ductless systems avoid the 20 to 30 percent duct losses common in central setups. Ducted only wins here if you already have good ductwork serving the space.
What rebates apply to a 1.5-ton heat pump?
The federal 25C credit expired Dec 31 2025 under OBBBA. State and utility programs plus DOE Home Energy Rebates (where launched) still apply and are not capacity-dependent — they key off equipment efficiency and household income, not tonnage. Use the calculator above to see programs for your state.