Heat pumps in Spain 2026 — IDAE incentives, Mediterranean climate

Market snapshot

Spain is one of the more favourable heat-pump markets in southern Europe, but for reasons that differ from Germany, Poland or the Nordics. The core demand drivers are a relatively mild heating climate over much of the country, a strong need for summer cooling, and utility prices that do not make direct resistance heating attractive. For households, electricity is roughly €0.27/kWh and gas roughly €0.10/kWh in Eurostat’s 2024-S2 household bands DC and D2 respectively (Eurostat dataset nrg_pc_204, 2024-S2). That spread means heat pumps can work economically, but the case depends heavily on seasonal efficiency and on whether cooling is also replacing separate air-conditioning equipment.

The market therefore skews toward reversible systems. In Spanish listings and installer practice, air-to-air heat pumps — effectively reversible split AC units used for both heating and cooling — remain highly visible because they solve the summer problem first and the winter problem second. Air-to-water systems are also established, especially in better-insulated retrofits, new-build flats and single-family homes where low-temperature emitters or domestic hot water are part of the brief.

The result is a two-track market:

• reversible air-to-air for room-by-room comfort and cooling-led demand;
• air-to-water for whole-home heating, DHW and higher-value retrofit packages.

That distinction matters more in Spain than in colder countries. A buyer in Seville or Valencia is often purchasing a cooling appliance that also heats efficiently in winter. A buyer in Burgos or inland Castilla y León is closer to the central-European logic of a heating-led appliance that happens to cool.

Climate by autonomous community

Spain is not one heat-pump climate. Performance expectations in A Coruña, Madrid and Málaga should not be discussed as if they were interchangeable.

Madrid sits in the warmer EN 14825 climate zone and has about 2,252 heating degree days at base 18 °C according to NASA POWER point climatology data for Madrid (40.42 °N, -3.70 °E) (NASA POWER 30-year point climatology at Madrid). That is a useful reference for much of inland central Spain: winters are real, but not severe by northern European standards. Correctly sized air-source units can still cover most annual demand without the low-temperature penalties seen in colder continental climates.

Northern Atlantic Spain is different. Bilbao and much of Asturias are cooler, cloudier and closer to the EN 14825 Average climate logic than to the Mediterranean one. Seasonal heating demand is higher, cooling demand is lower, and emitter design starts to matter more. In these areas, oversized radiators, fan-coils or underfloor heating improve the retrofit outcome.

Broadly:

• Mediterranean coast and Balearics: low to moderate heating demand, high cooling value; reversible air-to-air is especially competitive.
• Central plateau and Madrid region: moderate heating demand with hot summers; both air-to-air and air-to-water make sense depending on the building and emitters.
• Northern coast: stronger heating case, weaker cooling case; air-to-water retrofits deserve more attention.
• Southern inland Andalucía and Extremadura: winter loads are usually manageable for standard air-source units, but summer peak comfort often drives the purchase.

The practical implication is simple: in Spain, system selection follows cooling exposure almost as much as winter design temperature.

Incentives — national IDAE programmes plus regional autonómica top-ups

Spain’s support landscape is less centralised than in some neighbouring markets. National programmes are run through IDAE, the Instituto para la Diversificación y Ahorro de la Energía, often with implementation or co-funding structures that involve the autonomous communities (IDAE — Instituto para la Diversificación y Ahorro de la Energía: https://www.idae.es/).

Because current call details, eligible technologies, budget exhaustion and application windows can change, it is safer to treat Spanish subsidies directionally rather than quote a fixed share of investment cost. Buyers should check the live IDAE page for the current programme and conditions before signing a contract.

What usually matters in practice:

• whether the call covers residential heat pumps specifically;
• whether air-to-air is eligible, or only air-to-water and centralised systems;
• what documentation is required from the installer;
• whether replacement of fossil heating improves eligibility;
• whether the autonomous community offers an additional top-up.

Some autonomous communities have their own support layers or complementary grant lines. Cataluña, País Vasco and Andalucía are among the regions where buyers often encounter regional schemes or implementation channels alongside national support (IDAE — Instituto para la Diversificación y Ahorro de la Energía: https://www.idae.es/).

For installers, the main commercial point is not the headline grant percentage but process risk: reservation windows, technical paperwork, proof of commissioning, and payment timing can determine whether a nominally generous scheme is actually usable.

Recommended setup for Spanish retrofits

For many Spanish retrofits, the default recommendation is not “maximum heating power” but “best annual comfort package”.

A sensible hierarchy is:

• Flat or small house without hydronics: reversible air-to-air multisplit or room splits.
• House with existing wet heating and decent emitters: air-to-water monobloc or split, designed for low flow temperatures.
• Retrofit with poor envelope and small radiators in a cooler northern zone: emitter upgrades first, then heat pump.

In much of Spain, reversible air-to-air works well because it directly addresses summer cooling demand and avoids hydronic retrofit cost. It is often the lowest-friction route away from electric resistance heating or partial gas use.

Air-to-water becomes more attractive when the project also needs domestic hot water, central control, or better comfort distribution. For retrofits, the critical checks are:

• radiator output at 45–50 °C flow rather than 70 °C assumptions;
• DHW temperature strategy and any legionella cycle implications;
• outdoor unit siting, noise and defrost drainage;
• three-phase availability for larger homes where relevant.

The common sizing mistake in Spain is to treat a mild climate as permission to ignore heat-loss calculation. Mild does not mean negligible, especially in older masonry buildings with limited insulation and significant infiltration.

Top brands in Spanish listings

Spanish listings show a mix of domestic and imported brands. Domestic names include Hitec and Saunier Duval Spain, while imported volume is led by Daikin, Mitsubishi and LG.

For buyers, brand choice should be filtered through local service depth rather than catalogue breadth. In Spain, this is particularly important for reversible systems, where the unit may run for both winter heating and long summer cooling hours. Installer familiarity, spare-parts access and commissioning quality usually matter more than small differences in brochure COP values.

The market split is also brand-dependent:

That does not make one category inherently better. It reflects Spanish demand: cooling-capable products naturally get more attention in a Mediterranean market.

Sources

• IDAE — Instituto para la Diversificación y Ahorro de la Energía: https://www.idae.es/
• Eurostat dataset nrg_pc_204 (electricity, household band DC), 2024-S2
• NASA POWER 30-year point climatology at Madrid (40.42 °N, -3.70 °E)