To accelerate the adoption of clean technologies, the Government of Spain has implemented various grants and subsidies for the installation of aerothermal systems in 2025. Notable among these are:

· Personal Income Tax (IRPF) deductions for energy efficiency improvements, which allow for tax relief of between 20% and 60% of the investment, with an annual maximum base of €5,000 and a total of up to €9,000 per taxpayer and homeowner.

· Next Generation EU grants, which provide financial incentives based on the installed capacity. In general, grants can reach up to €500 per installed kW, with a maximum of €3,000 per home. For publicly owned housing and properties belonging to the third sector, the incentive is €650 per kW, with a limit of €3,900 per home.

· Incentive program under Royal Decree 477/2021, managed by the Institute for Energy Diversification and Saving (IDAE), which establishes direct grants for the installation of renewable technologies in the residential sector.

In addition to national aid, many autonomous communities have launched their own specific grant programs, which can be combined with national subsidies to maximize the financial benefits for those who choose aerothermal systems.

Aerothermal Energy in the RAE and Its Social Impact

The growing interest in this technology has led to its inclusion in the Dictionary of the Royal Spanish Academy (RAE), which defines it as a “climate control system based on obtaining thermal energy from the air and transferring it to a space or fluid.” This recognition reflects its evolution from a technical term to a concept in common usage, driven by technological advances and the increasing demand for sustainable energy solutions. In particular, aerothermal water heaters for domestic hot water (DHW) production have helped democratize this technology, making it accessible to a wider and more diverse audience.

Aerothermal Energy: An Efficient Solution for the Energy Future

Aerothermal energy is becoming established as one of the most efficient solutions for climate control and DHW production in Spanish homes. Its recognition by the RAE, strong government support in the form of grants and subsidies, and growing environmental awareness strengthen its position as a key technology for the energy transition. It is expected that the combination of incentives and advances in the efficiency of these systems will further drive their adoption in the coming years, contributing to a more sustainable and efficient energy model.

Sources:

 

https://dle.rae.es/aerotermia
https://www.boe.es/eli/es/rd/2021/06/29/477
https://www.idae.es/ayudas-y-financiacion/para-energias-renovables-en-autoconsumo-almacenamiento-y-termicas-sector/rd-4772021-ayudas-la-climatizacion-en-sector-residencial