The price of installing an air source heat pump in 2026 ranges from €8,500 to €23,000, depending on the size of your home, the heat emitter system, and its insulation level. At Fotovol, we don’t just throw around figures; these ranges are based on real quotes from Catalonia.
Important in 2026: Royal Decree-Law 7/2026 extends income tax deductions for aerothermal energy until December 2026. If you are thinking of installing one, this year is the time to do so with available subsidies.
Aerothermal price table by surface area (2026)
Prices include equipment, hydraulic installation, domestic hot water tank, and commissioning. Underfloor heating is not included unless otherwise stated.
| Surface | Approx. power | Without underfloor heating | With underfloor heating |
|---|---|---|---|
| Up to 80 m² | 5 kW | ~€9,000 | ~€14,000 |
| 100 m² | 6 kW | ~€9,500 | ~€15,000 |
| 120 m² | 6 kW | ~€10,000 | ~€15,400 |
| 150 m² | 7.5 kW | ~€12,000 | ~€18,750 |
| 200 m² | 10 kW | ~€14,000 | ~€23,000 |
Prices are indicative and do not include VAT. The final cost depends on the insulation of the home, the brand of equipment, and the complexity of the installation.
How much does it cost to install an air source heat pump depending on the size of your home?
Aerothermal heating price for apartment or house up to 80 m²
Average budget: €9,000 – €11,000
This is the scenario with the fastest payback, especially in apartments where a gas boiler is replaced with an air source heat pump system using fan coils or adapted aluminum radiators. In small spaces, the required power—4 or 5 kW—keeps the equipment cost down, and installation is less complex.
If the apartment already has radiators, the budget is close to the lower limit. If fan coils need to be installed or the radiators replaced, it increases by an additional €1,500 to €2,500.
Price of aerothermal heating for a 100 m² house
Average budget: €9,500 – €13,000
The point where investment and savings balance out most quickly. With existing radiators, the budget approaches the lower limit; with underfloor heating installed from scratch, it approaches the upper limit. In new-build apartments already prepared for air source heat pumps, the installation cost is lower because the hydraulic circuit is usually already in place.
Aerothermal energy price for a 120 m² home (with and without radiators)
Average budget: €10,000 – €15,400
This is the most frequent question we receive. In a 120 m² home, the typical power output is a 6 kW unit, sufficient for heating, cooling, and domestic hot water.
- With existing radiators: between €10,000 and €12,000. This is the most common option for renovations. We install high-temperature units that work efficiently with your existing radiators without the need to replace them or lift the floor. The savings on construction work more than compensate for the slight difference in performance compared to underfloor heating.
- Underfloor heating from scratch: between €13,500 and €15,400. The most efficient long-term solution. Underfloor heating operates at low temperatures—between 35 and 45 °C—which is precisely where heat pumps perform best. If you’re currently renovating or building, now’s the time to consider it.
Price of aerothermal heating for a 150 m² house
Average budget: €12,000 – €18,750
This is the most common scenario in single-family homes in Catalonia. Larger living spaces mean higher energy demand and, therefore, greater annual savings compared to gas or heating oil. In this range, the investment is recovered in 5 to 8 years, depending on the previous system. With heating oil, the payback period can drop to 4 years in well-insulated homes.
Aerothermal energy costs for houses over 200 m²
Average budget: €14,000 – €23,000
In large homes, the cost per square meter can drop to as low as €70/m² due to economies of scale, even with a more powerful system. Aerothermal heating is particularly cost-effective here if heating was previously done with oil: annual fuel savings can exceed €2,500.
Cost breakdown: what’s included in the aerothermal energy budget
To understand your budget, we need to separate the equipment from the installation. These are the market prices in 2026:
Heat pump (outdoor and indoor units) : This represents 55–60% of the total cost. Prices range from €5,000 to €10,000 depending on the brand and capacity. Leading brands in Catalonia include Daikin Altherma, Mitsubishi Ecodan, Vaillant aroTHERM, and Panasonic Aquarea. The price difference between mid-range and high-end models can be €2,000 to €3,000, but this difference is also reflected in efficiency, durability, and warranty.
Domestic hot water and buffer tanks are mandatory for efficient and stable operation. The cost is between €2,000 and €3,500 installed. Don’t skimp on this: an undersized tank forces the compressor to start and stop continuously, which increases consumption and shortens the equipment’s lifespan.
Labor and commissioning: A certified professional installation—required to qualify for tax deductions—costs between €1,500 and €2,500. This includes hydraulic and electrical connections, refrigerant charging, and commissioning with parameter adjustment.
Emission system
- Underfloor heating from scratch: €50–60/m² extra
- Adaptation of existing radiators: €800–1,500
- Fan coils: €2,000–€4,000 depending on the number of units
Electrical adaptations: Electrical panel, surge protector, and dedicated line: €400–800. Don’t skimp here—a surge protector costs a fraction of what an electronic circuit board for the compressor is worth.
Aerothermal heating with radiators: comfort without construction work
If you’re looking to install an air source heat pump without lifting the floor, this is the most common option in existing homes with central heating. And it works better than many people realize.
What you need to know before deciding:
Modern high-temperature systems—like those we install at Fotovol using R290 technology—operate at a supply temperature of 60–65 °C, compatible with conventional radiators. In most cases, they don’t need to be replaced.
When is underfloor heating a better option than radiators?
If you’re undertaking a complete renovation or building from scratch, underfloor heating is the most efficient option. If the property is already built and the radiators are in good condition, an air source heat pump with radiators is perfectly suitable and significantly cheaper.
Budget with existing radiators:
- 100 m² apartment: €9,500 – €11,500
- 120 m² apartment: €10,000 – €12,000
- 150 m² apartment: €12,000 – €14,500
Aerothermal energy quote for a single-family home
Single-family homes are where aerothermal heating makes the most economic sense, especially if you were previously heating with oil or an electric boiler. You might be interested in: What is the price of an aerothermal boiler?
The three factors that most significantly affect the budget for a single-family home are: the surface area, the level of insulation, and the heating system. A well-insulated 150 m² house with existing radiators can have a similar budget to a poorly insulated 120 m² house with new underfloor heating.
At Fotovol, we always conduct a free preliminary study before providing a quote. It makes no sense to size a system without first assessing the building’s actual heat loss.
Grants available for aerothermal energy in Catalonia in 2026
In Catalonia you can combine several lines of aid for aerothermal energy that can significantly reduce the initial investment.
Income tax deduction: Between 20% and 60% depending on the improvement in the energy performance certificate. Valid until December 2026 (Royal Decree 7/2026). This is the most significant subsidy and has the greatest impact on the final cost.
Property Tax (IBI) Reduction Available in municipalities of Barcelona, Girona and others. Reduction of up to 50% for 3 to 5 years. Compatible with Personal Income Tax (IRPF) deduction.
Energy Saving Certificates (EACs) can cover up to 15% of the installation cost. They require no additional paperwork from the owner — we handle it all.
Real example: €13,000 installation in a 130 m² home in Girona. With a 40% income tax deduction → savings of €5,200. Net price: €7,800.
To access any of these subsidies, the installation must be carried out by an authorized installation company and have the electrical installation certificate and the thermal installation certificate.
Aerothermal + solar panels: the most cost-effective combination
Installing both systems at the same time is not only more efficient—it’s cheaper than doing it separately. Legalization and labor costs are shared, and the heat pump primarily uses the energy generated by your own solar panels during the hottest hours of the day.
A complete system for an average home starts at €13,500, with savings on electricity bills that can exceed 80% compared to the previous system.
How much does it cost to maintain an air source heat pump?
Unlike gas or oil boilers, aerothermal systems require minimal but legally mandated preventive maintenance (RITE).
- Annual inspection: between €150 and €250 per official technical maintenance contract
- Tasks included: cleaning filters, checking refrigerant charge and checking the hydraulic circuit
- Useful life: a well-maintained piece of equipment lasts for more than 20 years.
The maintenance of an air source heat pump is the lowest cost of any air conditioning system on the market, and one of the reasons why air source heat pumps have the best total cost of ownership in the long term.
FAQs about aerothermal system prices in 2026.
How much does it cost to install an aerothermal system in a 70 m² apartment?
Between €8,500 and €10,500 using existing emitters. This offers the fastest payback period, especially if replacing an electric water heater or an old boiler.
How much does an aerothermal system cost for a 120 m² house?
The estimate ranges from €10,000 (with existing radiators) to €15,400 if installing underfloor heating from scratch. This includes a 6 kW heat pump, a domestic hot water (DHW) tank, and full installation.
Is it cost-effective to install an aerothermal system in a 150 m² home?
Yes. The cost ranges from €12,500 to €16,500. As the home has higher energy demands, annual savings compared to gas or oil accelerate the payback period. With 2026 personal income tax (IRPF) deductions, the net investment can be significantly reduced.
Can IRPF tax deductions be combined with the IBI (property tax) rebate?
Yes, they are compatible. You can claim the IRPF deduction on your tax return while simultaneously benefiting from the IBI rebate in your municipality. In some cases, they are also compatible with Energy Savings Certificates (CAEs). At Fotovol, we manage the application process for all available grants.
How does the cost of installing an aerothermal system in Catalonia compare to the rest of Spain?
Equipment and installation prices are similar to those in the rest of Spain. The difference lies in the financial support: Catalonia offers more widespread municipal property tax (IBI) rebates, and the ICAEN issues specific calls for applications that supplement state aid.
