Heat pumps for homes: heating and DHW
Transform your home into the energy future you have always imagined.
Heating and hot water with IDM's intelligent heat pumps, combined with solar energy for unprecedented savings.
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5 Benefits of aerothermal energy: economical, environmental, latest technology, comfort and versatility
Superior energy efficiency A+++
Generates up to 5 thermal kWh of heating, cooling or DHW for each electrical kWh consumed.
Reduction of CO₂ emissions
It contributes to a minimal environmental impact, especially when combined with solar photovoltaic energy.
Economic savings
You eliminate the gas or diesel bill and you can quickly recoup your investment.
Full integration with Solar Energy
Maximise savings with the hybridization of aerothermal energy and the solar installation.
Subsidies, grants and deductions available
You can access two important financial aids: the Energy Savings Certificates (CAE) and the IRPF tax deduction. These incentives allow you to reduce your initial investment and start noticing savings on your bills in the medium and long term, while improving the efficiency and comfort of your home or business.
In addition, it allows the reuse of already installed diffusion systems, such as radiators, underfloor heating or fan coils, to guarantee efficient and sustainable comfort.
- Outdoor unit: Captures thermal energy from the outside air.
- Indoor unit: Distributes thermal energy within the home.
- DHW tank: Stores hot water.
At SolarTradex, we offer you a unique solution: the combination of aerothermal and solar energy—a true energy hub to efficiently manage your home's energy consumption. As Frederic Andreu says when asked: Why is aerothermal energy so interesting?
"I always explain it this way to my clients, and they get it perfectly. When you have a gas boiler, for every 1 kWh of gas you buy, you convert it into 1 thermal kWh. With aerothermal energy, for every 1 electric kWh you buy, you generate between 3 and 4 thermal kWh. That’s the beauty of aerothermal energy. But what is the magic of aerothermal energy when combined with solar PV? If we are covering 50% of our consumption with solar energy, what does that mean for the heat pump? It means that for every 1 kWh you buy from the utility company, you generate 3.5... no! Since 50% comes from your solar panels, you actually generate 7 thermal kWh. Hybridized with solar, for every 1 electric kWh you purchase, you generate between 7 and 8 thermal kWh. So, there you have it... that’s the magic of aerothermal energy."
- Remote control of all production parameters: heating, DHW and solar energy from a single system
- Ultra-efficient management of your solar surpluses and maximum connectivity with all equipment
- Manufactured in Austria ensuring quality and high efficiency
Aerothermal systems and the CAE system: Monetize your energy savings
The European energy transition now prioritizes the decarbonization of heating. With the new RDL 7/2026, replacing your gas or oil boiler with aerothermal energy is more profitable than ever thanks to Energy Saving Certificates (CAE).
What are CAEs and how do they benefit you?
- A savings market: Large energy companies are legally required to save energy. To comply, they "buy" the savings you generate by installing aerothermal systems.
- Value multiplier: The new law applies a special coefficient that increases the value of certificates generated by heat pumps.
- Direct discount: At SolarTradex, we convert this value into an immediate discount on your quote, without waiting for public subsidies.
- Full transparency: The system is managed by OMIE (Iberian Energy Market Operator), ensuring liquidity and secure payment.
The winning strategy: Combining Solar PV + Aerothermal not only reduces your bill to the minimum but also allows you to combine the direct CAE discount with the maximum Income Tax (IRPF) deductions (up to 60%).
Why choose SolarTradex
✅ In-house technical team (more than 50 people)
✅ Specialised in-house engineering (50% of the team are engineers/economists)
✅ Experience in the solar sector since 2010
✅ Full project management: no subcontracting, no intermediaries
✅ Regular trainers at the Association of Industrial Engineers of Barcelona and Lleida
Frequently asked questions
Is aerothermal energy really a renewable energy source?
Yes, aerothermal energy is considered a renewable energy source, as it takes advantage of the thermal energy in the air, an inexhaustible, free and environmentally friendly source. It only uses a small part of electricity consumption for its operation.
Being officially renewable, aerothermal energy is eligible for grants and subsidies for energy renovation and ecological transition.
Is aerothermal energy efficient in extreme climates?
Yes. Modern aerothermal systems are efficient even in very extreme temperatures. The operating limits of the equipment, in most cases, range from -7 ºC to +43 ºC.
A key principle: the smaller the temperature difference between the exterior and the interior of the home, the higher the performance. This explains why in Mediterranean climates such as Catalonia and the Balearic Islands, aerothermal energy operates at maximum efficiency during almost the entire year.
Combined with a solar panel installation, aerothermal energy is powered by its own energy source and multiplies the home's energy savings.
How much can I save with aerothermal energy?
Savings depend on the heating and DHW (Domestic Hot Water) system you replace, but on average you can reduce the energy cost by between 30% and 70%. The key lies in the COP (Coefficient of Performance): for every 1 kWh of electricity consumed, aerothermal energy generates between 3 and 5 kWh of thermal energy.
Estimated savings depending on the system replaced:
- Compared to a natural gas boiler: 30-50% savings on your energy bill.
- Compared to diesel or propane: 40-60% savings.
- Compared to conventional electric heating: 50-70% savings.
These savings can be drastically multiplied if aerothermal energy is combined with a residential self-consumption solution: by powering it with the energy generated by your own solar panels, the operating cost can approach zero for many months of the year.
How does aerothermal energy or the heat pump adapt to the home?
The installation adapts to both a newly built house and a renovation, replacing the existing boiler. As a diffusion system, previously installed elements can be used:
- Radiators (conventional or low-temperature).
- Underfloor heating, the most efficient option due to its low thermal gap.
The integration is very simple and allows a considerable improvement in the home's energy efficiency.
How long does an aerothermal installation take?
The total installation time can vary depending on the dimensions of the home and the equipment used. In most cases, installations are quite quick and are completed within 5 to 7 days. For very complex installations, it can take up to 10 days.
Factors that influence the duration:
- Replacement of existing boiler: if there is already a distribution installation (radiators, underfloor heating), the process is faster within the usual range.
- Installation in new construction or without a previous system: it can lengthen the execution as the entire emission network and DHW tank must be installed.
- Location of the outdoor unit: if minor masonry work or specific piping is required, additional time is added.
The installation does not cause damage or harm to the building: it is a clean process, with minimal work and perfectly compatible with inhabited homes.
Does an aerothermal system require a lot of maintenance?
No. Aerothermal is one of the climate systems that requires the least maintenance, especially compared to gas or diesel boilers. As there is no combustion, there are no chimneys, no fuel tanks, and no parts subject to high wear.
Basic annual maintenance:
- Annual professional inspection: check of the refrigerant circuit, pressures, sensors and general state of the equipment.
- Cleaning of the outdoor unit: removing leaves, dust or dirt accumulated on the heat exchanger (the user can do this themselves).
- Indoor filter: cleaning or replacement every 6-12 months depending on use.
With this minimal maintenance, the useful life of an aerothermal system ranges between 15 and 20 years, with very few incidents throughout its life.
Can I get subsidies to install aerothermal energy?
Yes. Aerothermal energy is one of the technologies best positioned to access grants and tax advantages, precisely because of its official recognition as renewable energy and its high energy-saving potential. The main available routes are:
- Income tax deduction (RDL 7/2026): up to 40% in flats and 60% in single-family homes if the 30% reduction in non-renewable primary energy consumption is exceeded — something that aerothermal energy achieves practically by default when replacing a gas or diesel boiler.
- Energy Saving Certificates (CAE): direct discount applied to the project invoice by the installer, thanks to the certified energy saving of the system change.
- Municipal reductions: up to 50% on the IBI (property tax) and up to 95% on the ICIO (construction tax) in many municipalities of Catalonia and the Balearic Islands.
- Regional programmes: in the Balearic Islands, for example, the FACTOR 2026 programme includes specific grants for energy renovation with heat pumps.
Check the details of each route and see which are compatible with each other on our grants and subsidies page. Our team handles all the necessary documentation so that you can take full advantage of the benefits.
