The price of installing an aerothermal system in Spain varies according to the size of the house, the type of emitters (radiators, fan coils, underfloor heating) and the complexity of the installation.
In 2025, prices will average between €8,000 and €20,000, although they may exceed €25,000 in large houses with radiant floor heating or hybrid installations.
If you want to understand in detail how this system works, its applications and comparisons with other air conditioning methods, we recommend you to read our Complete guide to aerothermal energy in 2025.
Approximate costs by type of housing
| Type of housing | Standard installation | With underfloor heating |
|---|---|---|
| 80-100 m² apartment | 8.000 – 12.000 € | 10.000 – 15.000 € |
| 120-150 m² apartment | 9.500 – 14.000 € | 15.000 – 18.000 € |
| Detached house 150 m² | 11.000 – 16.000 € | 17.000 – 20.000 € |
| Large house (+200 m²) | 14.000 – 20.000 € | 20.000 – 25.000 € |
As you can see, the cost per square meter decreases the larger the property, thanks to economies of scale.
In how many years is the investment amortized?
Aerothermal heating pays for itself through monthly energy savings, which are usually between 40% and 70% compared to a gas or oil boiler.
- In medium-sized apartments, savings are usually around 600-800 €/year.
- In larger single-family houses, the savings can reach 1,000-1,200 €/year.
Actual example of depreciation
- Investment: 12,000 €.
- Annual savings: €1,000
- Amortization: 6 years
If the installation receives a Next Generation subsidy (40%), the cost drops to €7,200, reducing the payback to only 3-4 years.
Comparison of annual expenditure (100 m²)
| Heating system | Estimated annual consumption | Expense approx. |
|---|---|---|
| Aerothermal (COP 4) | 3,000 – 4,500 kWh | 600 – 900 € |
| Natural gas | 9,000 – 12,000 kWh | 1.000 – 1.500 € |
| Gasoil | 1,200 – 1,500 liters | 1.800 – 2.200 € |
| Electric boiler | 9,000 – 12,000 kWh | 1.800 – 2.500 € |
Aerothermics consumes up to 3 times less than a gas boiler for the same useful energy.
What factors influence the final price?
- Equipment power: depends on m² and insulation.
- Type of emitters: underfloor heating increases the initial investment, but maximizes efficiency.
- Geographical location: in cold climates, more powerful equipment may be required.
- New construction or renovation: adaptation to existing systems makes the project more expensive.
- Make and model: price and warranty differences between manufacturers.
Aerothermal energy requires a high initial investment, but with a quick return (3-6 years with subsidies) and a useful life of more than 20 years, it is one of the most profitable and sustainable technologies for air conditioning and DHW in homes and communities.
At Fotovol we accompany you from the initial energy study to the turnkey installation and the management of all subsidies. Request now your and discover how much you can save with aerothermal energy in your home..