Spain's heat pumps: €2,300 vs €15,000 quotes

Heat Pumps in Spain: €2,300 vs the €15,000 Official Quote

Aerotermia (air-source heat pumps) works. The problem is the price you are quoted. A documented case in a Spanish home shows a full installation — unit plus traditional radiators, no construction work — at €2,300, with 60% deductible on IRPF (Spanish income tax), leaving a real cost of €940. The same system, quoted by an installer with underfloor heating, jumps to a €15,000 difference that another user saved by installing a wood boiler and air consoles instead. Between these two figures lies the entire debate: it is not whether the heat pump heats, but how long it takes to return what it cost.

The Real Cost of Installing Heat Pumps

Installers' argument is well known: aerotermia does not suit old radiators; you need to double elements or install low-temperature emitters. The €2,300 installation disproves this in practice, using conventional radiators without lifting the floor. The key is sizing. Those who installed 5 kW instead of the advised 17 or 23 argue that most days of the year only a fraction of that power is needed: calculations are made to heat a frozen house on the coldest day, not to maintain 21 degrees in January.

The actual electricity bill for a new home with aerotermia, no gas, a 200-liter hydrokit, and good insulation averages around €80 per month between summer and winter, plus €150 annually for maintenance including magnesium anode replacement. In a cold zone with a well-insulated home, winter spending drops to €70 per month with a setpoint of 21 degrees.

Underfloor Heating, Geothermal, and Spare Parts Issues

Underfloor heating changes the equation. Those who have it installed with a heat pump defend it without nuance: the comfort of distributed coolness in summer is not provided by a split unit in the living room. Those who do not have it point to the other side: 15 days without hot water waiting for a broken part. Spare parts, not consumption, are the system's Achilles' heel.

Geothermal energy appears as the technically superior but economically impossible alternative for a chalet: drilling is required, initial investment is high, and buried piles have an estimated lifespan of 25 to 50 years under the foundation. Difficult to replace once the concrete has hardened.

Does Aerotermia Pay Off Without Solar Panels?

There lies the sustancia ilegal. The most widespread consensus in analysis is that without photovoltaics, amortization stretches over years. With panels, the return changes. And in moderate coastal climates, with little thermal oscillation, the equipment operates at low regimes and lasts longer; in mountain areas, with widely separated minimums and maximums, the device suffers wear.

The alternative gaining ground in homes with land: a wood boiler with a 100-liter tank feeding radiators, plus two or three air consoles for summer. Installation cost is much lower and fuel is cheap where firewood is abundant.

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The prediction, with reservations: if electricity prices do not fall again and domestic photovoltaics continue to become cheaper, aerotermia will cease to be a climate control decision and become a solar roof decision. Meanwhile, the €15,000 quote will remain the best argument for the wood boiler.