How much does a heat pump cost to install in 2026?

Air-source heat pumps typically cost €10,000–18,000 installed in Europe or $12,000–22,000 in the US. Ground-source (geothermal) runs 2–3× higher but delivers SCOP 4.0–5.0 and lasts 25+ years. Retrofit installations cost more than new-build integration.

Are heat pump subsidies still available in 2026?

Yes — Germany (BEG), UK (BUS £7,500), France (MaPrimeRénov'), Netherlands (ISDE), and the US IRA (30% tax credit up to $2,000) all continue offering meaningful subsidies through at least 2026–2028.

What is a realistic payback period for a heat pump?

5–8 years is common with generous subsidies and a well-insulated home. Without subsidies, expect 10–15 years. Poorly insulated homes may never pay back on economics alone — but often still make sense for comfort, carbon reduction, and eventual regulation-driven gas phase-outs.

Do heat pumps work in cold climates?

Yes — modern cold-climate variants (Mitsubishi Zuba, Fujitsu XLTH, LG Prestige) maintain SCOP 2.5+ at −25°C. Traditional units drop off sharply below −10°C. Norway, Sweden, and Finland now have among the highest per-capita heat pump adoption rates globally.

Can I keep my existing radiators?

Often yes — if your radiators are oversized enough to work at 45–55°C flow temperature. Most homes need at least a partial radiator upgrade (larger units in the coldest rooms) to hit good SCOP. A heat-loss survey tells you what stays and what changes.

🌱Energy & Environment

How to Calculate Heat Pump Savings and ROI (2026)

Switching from a gas boiler to a heat pump can cut heating costs by 40–70% — or increase them, depending on four key variables. This guide shows how to run the math yourself before spending €10,000+ on installation, with real 2026 price data from five countries and honest break-even scenarios for both well-insulated and poorly-insulated homes.

6 min read

July 7, 2026

Updated: Jul 7, 2026

Air-source heat pump installed beside a Scandinavian home in winter — Modern cold-climate heat pumps maintain SCOP 3.0+ even at −15°C outdoor temperatures.

Why COP Is the Only Number That Matters

A heat pump's Coefficient of Performance (COP) tells you how many units of heat you get per unit of electricity. A COP of 3.5 means 1 kWh of electricity delivers 3.5 kWh of heat. This ratio, combined with the price gap between electricity and gas, determines whether you save or lose money. Every other spec (refrigerant type, decibel rating, brand) is secondary to real-world seasonal COP.

COP vs SCOP

COP is measured at a single temperature (often 7°C outdoor). SCOP (Seasonal COP) averages performance across a whole heating season and is the more honest number for savings calculations. Modern air-source heat pumps achieve SCOP 3.0–4.5. Ground-source (geothermal) systems reach SCOP 4.0–5.0.

The Heat Pump Savings Formula

To compare annual heating cost with a heat pump versus a gas boiler, you need three numbers: your annual heat demand (kWh), boiler/HP efficiency, and current fuel prices:

Annual Cost Comparison

Gas cost = Heat demand (kWh) ÷ Boiler efficiency × Gas price HP cost = Heat demand (kWh) ÷ SCOP × Electricity price Annual savings = Gas cost − HP cost Example (15,000 kWh heat demand): Gas: 15,000 ÷ 0.90 × €0.11 = €1,833 HP: 15,000 ÷ 3.5 × €0.28 = €1,200 Savings: €633/year Over a 15-year lifespan: €9,495 in cumulative savings.

Try the Calculator

Use our free Celsius to Fahrenheit converter for instant, accurate results.

🌡️Convert °C → °F

Try the Heat Pump Savings Calculator

Enter your annual heating consumption and local fuel prices to see your break-even year and 15-year total savings. The calculator handles SCOP scenarios, subsidies, and install cost premiums vs a like-for-like gas boiler replacement:

The Electricity-to-Gas Price Ratio Rule

The cleanest way to know instantly whether a heat pump saves money in your country: divide your electricity price by your gas price. If the ratio is below your SCOP, you save. This one number tells you 80% of the story before you even open a spreadsheet.

Country	Elec Price	Gas Price	Ratio	Save at SCOP 3.5?
Germany	€0.32	€0.11	2.9	Yes (large)
UK	£0.27	£0.07	3.9	Marginal
France	€0.21	€0.10	2.1	Yes (large)
Netherlands	€0.29	€0.13	2.2	Yes (large)
Norway	€0.15	N/A	N/A	Yes (vs oil/wood)
Sweden	€0.20	N/A	N/A	Yes (vs district)
USA (avg)	$0.16	$0.05	3.2	Yes (modest)
USA (New England)	$0.28	$0.08	3.5	Break-even

Calculating Payback and 10-Year ROI

Payback period accounts for the installation premium over a like-for-like gas boiler replacement. The relevant number is not "how much does a heat pump cost?" but "how much MORE than a boiler does it cost?" — because you'd be replacing the boiler anyway:

Payback Formula

Payback = (HP Install Cost − Gas Install Cost − Subsidies) ÷ Annual Savings Example: HP install: €14,000 Gas install: €4,500 Subsidy: €5,000 Annual savings: €650 Payback = (14,000 − 4,500 − 5,000) ÷ 650 = 6.9 years 10-year net savings: €6,500 − €4,500 = €2,000 profit 15-year net savings: €9,750 − €4,500 = €5,250 profit

Boiler room with copper pipework and wall-mounted heat pump indoor unit — Retrofit heat pump installations often reuse existing radiator loops — but only if flow temperatures can drop to 45–55°C.

2026 Heat Pump Subsidies by Country

Subsidies dramatically change the payback math. These are the active 2026 programs — most persist through at least 2028:

Country	Program	Amount	Notes
Germany	BEG (Bundesförderung)	30–70% of cost	Higher for gas boiler replacement
UK	Boiler Upgrade Scheme (BUS)	£7,500	Air-source; £7,500 also for ground
France	MaPrimeRénov'	€2,500–10,000	Income-based
Netherlands	ISDE	€1,500–3,750	Depends on SCOP
USA (federal)	IRA tax credit	30% up to $2,000	Extends through 2032
USA (HEEHRA)	Rebate program	Up to $8,000	Income-based, state-administered

When a Heat Pump Doesn't Pay Back

Heat pumps struggle to hit good ROI in these cases:

• **Poorly insulated homes** — Radiators need high flow temperatures (>60°C), which crashes SCOP to 2.0–2.5. Fix insulation first — see our [DIY home energy audit guide](/articles/how-to-do-a-diy-home-energy-audit) for the priority ranking. • **Very cold climates without ground source** — Air-source performance drops below −10°C. Cold-climate variants help; standard units struggle. • **Extremely cheap gas** — In markets where gas is under €0.06/kWh, savings are marginal. • **Short-term ownership** — If you're moving within 5 years, ROI usually doesn't clear the install premium. • **Very small heat demand** — Under 8,000 kWh/year, the fixed install cost dominates and payback stretches over 15 years.

Insulation First

The single biggest predictor of heat pump success is envelope quality. Homes with EPC rating D or worse should insulate first — otherwise you're paying to heat leaks with expensive electricity. Loft insulation, cavity wall fill, and draft-sealing typically deliver 20–40% heat demand reduction at 1–3 year payback — dramatically improving heat pump economics.

Pairing a Heat Pump with Solar

A heat pump is the single best appliance to combine with rooftop solar. Winter solar production is limited, but shoulder-season output (spring/autumn) covers a large share of heating demand, and summer overproduction can heat domestic hot water for free. A typical pairing raises solar self-consumption from 30% to 55–65% and shortens combined payback by 1–2 years. See our [solar payback calculator guide](/articles/how-to-calculate-solar-panel-payback-period) for the full math.

Underfloor heating pipes being installed during renovation — Underfloor heating with 30–35°C flow temperature delivers SCOP 4.0+ — the gold standard pairing for heat pumps.

❓Frequently Asked Questions

Divide your electricity price by your gas price. If the result is below your expected SCOP, you save. In most of continental Europe (ratio 2.0–2.5), any SCOP above 3.0 wins comfortably. In the UK (ratio ~3.9), you need SCOP 4.0+ for meaningful savings.