If your Costa Blanca home still relies on bottled gas, an old boiler or a patchwork of electric heaters, you have probably wondered whether there is a smarter way to stay comfortable all year. Aerothermal heating, or ‘aerotermia’ as it is known locally, is increasingly the answer for homes around Torrevieja and Orihuela Costa. It is one of the most efficient ways to heat, cool and produce hot water from a single system, and it suits our mild Mediterranean climate particularly well.
This guide explains how it works, the kind of savings to expect, who it is right for, and the grants worth asking about before you commit.
What is aerothermal heating?
An aerothermal system is a high-efficiency heat pump that captures energy from the outside air and uses it to warm or cool your home and to heat your domestic hot water. Even on a cool winter morning in Orihuela Costa there is plenty of usable energy in the outdoor air; the heat pump simply concentrates it and moves it where you need it.
Because it moves heat rather than burning fuel to create it, an aerothermal unit can deliver several units of useful energy for every unit of electricity it consumes. That ratio is what makes the technology so efficient compared with a gas boiler or direct electric heating.
Three jobs, one system
A well-designed aerothermal installation can typically cover:
- Heating in winter, through underfloor heating, low-temperature radiators or fan coils.
- Cooling in summer, when paired with the right indoor units, so your home stays comfortable through the 30 to 35 degree heat we regularly see here.
- Domestic hot water, stored in an insulated tank ready for showers, kitchens and bathrooms.
Replacing two or three separate appliances with one coordinated system is a big part of the appeal, both for comfort and for keeping running costs down.
Why it suits the Costa Blanca
Aerothermal heat pumps perform best in mild climates, and the southern Costa Blanca is close to ideal. Winters here are gentle, so the system rarely has to work hard to keep a home warm, and it stays highly efficient throughout the heating season.
A few local factors are worth keeping in mind:
- Seasonal and second homes. Many properties around La Zenia, Playa Flamenca and Cabo Roig are used part of the year. A modern aerothermal system can be controlled remotely and set to gentle ‘holiday’ modes, so the home is never left damp or freezing while you are away.
- Salt air. Coastal humidity and salt take their toll on outdoor equipment. Correct siting, suitable materials and regular servicing all matter for longevity near the sea.
- Summer cooling. Because the same system can cool as well as heat, you get year-round value rather than a unit that sits idle for half the year.
What savings can you realistically expect?
Honest answer: it depends. Your savings hinge on what you are replacing, how well insulated your home is, how you use it and your electricity tariff. We will not quote a fixed figure, because anyone who does is guessing.
That said, the general pattern is consistent:
- Compared with bottled or mains gas and with direct electric heating, aerothermal systems usually cut the energy used for heating and hot water substantially, because they move heat rather than generate it from scratch.
- Pairing the system with solar panels can reduce running costs further still, since the heat pump runs on electricity you may already be generating.
- A correctly sized, well-installed system delivers the savings; an oversized or poorly commissioned one does not. Quality of installation is everything.
The best way to understand the numbers for your specific property is a tailored assessment, where the equipment is matched to your home’s size, layout and how you actually live in it.
Is your home suitable?
Most homes on the Costa Blanca can accommodate aerothermal heating, but some are easier than others. A few things we look at:
- Space for the outdoor unit and hot water tank. New builds and renovations make this straightforward; in compact apartments it needs more thought.
- How heat is distributed. Underfloor heating is the perfect partner, but the system also works well with low-temperature radiators or fan coils, which can double as cooling.
- Insulation and glazing. The better your home holds temperature, the more you save. It is worth addressing obvious draughts and gaps as part of the project.
- Your goals. Some clients want a complete heating, cooling and hot water solution; others are focused on replacing an ageing boiler. The right design follows from that.
If you are weighing this up against a more conventional setup, it can help to compare it with a standard air conditioning installation and decide which fits your home and budget.
Grants and funding
There is genuine financial support available for efficient heating in Spain. Schemes linked to the IDAE (Spain’s energy agency) and the EU Next Generation recovery funds have, in recent years, offered help towards installing renewable heating such as aerothermal systems.
A few honest points:
- Exact amounts, conditions and deadlines change over time and vary by region, so we will not quote figures here. The headline is simply that grants exist and are worth investigating before you commit.
- Eligibility usually depends on the property, the equipment specified and correct documentation, which is where working with certified installers matters.
- As a RITE and F-Gas certified company, we can advise on what is currently available and make sure your installation is documented correctly so you do not miss out.
A sensible next step
Aerothermal heating is not a one-size-fits-all product. The comfort and the savings come from a system that is properly sized and installed for your particular home, whether that is a villa in Villamartín or an apartment near Punta Prima.
The most useful thing you can do is arrange a tailored assessment. We will look at your property, explain what is realistic, and outline any grants you might benefit from, with no obligation. You can read more about our aerothermal heating service, see the areas we cover around Orihuela Costa, or simply get in touch for a free quote. Our team is bilingual, so the whole process is clear whether you prefer English or Spanish.