Buying Guides
Aerothermal Heating for Winter: Complete Guide 2025
3 minutes of reading
By Mariona Griera
September 30, 2025
Discover how aerothermal technology can transform your home this winter: energy efficiency, savings on your bills, and maximum comfort. Choose the ideal system for your heating and hot water needs, and opt for a sustainable and versatile solution for 2025.
Heat your home, lower your bill, and join the most efficient energy of the moment.
Aerothermal energy harnesses the energy from the outside air to generate heating and/or domestic hot water with COPs much higher than traditional boilers. In winter, when you notice it most in comfort and on your bill, choosing the right system is key.
Why aerothermal energy now?
- Savings: low electricity consumption compared to oil boilers or pure resistances.
- Comfort: stable temperature and compatible with underfloor heating, low-temperature radiators, or fan coils.
- Sustainability: fewer emissions and the possibility to combine with photovoltaic systems.
What you need according to your situation
1. Heating only
If you are only looking for heating, a monobloc outdoor unit is enough: hydraulic circuit directly to your installation (low-temperature radiators, fan coils, or underfloor heating). This is an optimal option for homes where domestic hot water is already resolved or not needed at the moment. This allows for a compact installation and fewer components.
Recommended options for providing heating only:
Featured product
Samsung EHS R290 Monobloc Air Source Heat Pump AE050CXYBEK/EU 5.0 kW
Samsung EHS R290 AE050CXYBEK/EU monobloc air source heat pump with a capacity of 5 kW for heating, cooling, and hot water production. High energy efficiency and smart connectivity.
- 5.0 kW power in heating and cooling.
- Compatible with the SmartThings app for remote control.
- Low environmental impact with R290 refrigerant with GWP 3.
€3,314.00€7,484.55
Featured product
Ferroli OMNIA M 3.2 8 kW Monobloc Air Source Heat Pump
The Ferroli OMNIA M 3.2 heat pump of 8 kW offers high energy efficiency A+++ with R32 refrigerant and WiFi connectivity. It produces hot water up to 60 ºC, even in extreme cold climates of -20 ºC.
- Energy efficiency A+++ with R32 refrigerant.
- Integrated WiFi for remote control.
- Generates hot water up to 60 ºC with temperatures of -20 ºC.
€3,154.00€7,312.35
Featured product
Samsung EHS R290 Monobloc Air Source Heat Pump AE080CXYBEK/EU 8.0 kW
Samsung EHS R290 AE080CXYBEK/EU 8.0 kW Monobloc Air Source Heat Pump for heating, cooling, and hot water production. High energy efficiency, WiFi connectivity, and sustainable refrigerant.
- 8.0 kW power in heating and cooling.
- Compatible with the SmartThings app for remote control.
- R290 refrigerant with GWP 3, environmentally friendly.
€3,529.01€7,970.40
2. Domestic hot water only
If your priority is hot water, install a DHW heat pump (thermodynamic water heater). It is autonomous, with an integrated tank and consumes up to 3–4 times less than a conventional electric water heater.
Ideal solution for families who want to reduce their hot water bill without affecting the heating. The main advantages are: quick installations and short return on investment. The models that use R290 gas are highly efficient and quiet.
Featured product
Thermor Aéromax VM R290 Heat Pump for DHW, 100 Liters
Compact solution for DHW in small homes, with wall installation indoors or outdoors. Smart system, WiFi connectivity, and ultra-silent operation.
- 100 L capacity and compact wall design
- Silent operation (38 dBA) and WiFi connectivity
- 4 intelligent regulation modes and photovoltaic compatibility
€886.01€2,152.50
Featured product
Thermor Aéromax VM R290 150-Liter Heat Pump for DHW
Compact and efficient solution for DHW production through aerothermal technology. Wall-mounted installation for indoor or outdoor use, WiFi connectivity, and Smart system to optimize consumption.
- 150 L capacity and compact wall-mounted design
- Quiet operation (38 dBA) and WiFi connectivity
- 4 intelligent regulation modes and photovoltaic compatibility
€971.00€2,361.60
Featured product
Thermor Aéromax VS Combi Heat Pump for DHW, 270 Litres
The Thermor Aéromax VS Combi 270-litre heat pump for DHW is an efficient and eco-friendly solution for domestic hot water, compatible with solar systems. With remote control via Cozytouch and 5 intelligent regulation modes, it is ideal for reducing energy consumption.
- 270-litre capacity, compatible with solar systems.
- Remote control via Cozytouch.
- ACI Hybrid anti-corrosion protection system.
€1,805.00€4,138.95
3. Heating and domestic hot water
To cover heating and hot water with the same system, the option is a complete aerothermal kit: outdoor unit + indoor unit with integrated domestic hot water tank. It is the most efficient solution.
Recommended option for newly built homes or complete renovations, also for families who want to replace their boiler with a more sustainable and 100% electric solution. The main advantages are the comprehensive management provided by the system, the abundant supply of domestic hot water, and the possibility of supporting the system with photovoltaic installations.
Featured product
Thermor Aéromax Split 150 Litre Domestic Hot Water Heat Pump
The Thermor Aéromax Split 150-litre Water Heater combines energy efficiency and high capacity, ideal for wall-mounted installations. With a heat pump, it is perfect for diverse climates, operating from -15°C to 37°C.
- 150-litre capacity.
- Energy class A+.
- Wall installation with Cozytouch connectivity.
€1,515.00€3,456.30
Featured product
Thermor Aéromax Split 200 Litre Domestic Hot Water Heat Pump
The Thermor Aéromax Split 200-litre heat pump for DHW offers high energy efficiency with an A+ rating and a quick heating time of 2 h 59 min. Ideal for wall installations, it features Cozytouch connectivity.
- 200-litre capacity.
- Energy class A+.
- Heating time of 2 h 59 min.
€1,506.00€3,591.60
Featured product
Samsung Mono HT Quiet 14 kW Aerothermal Set 260 Liters
Air source heat pump set for heating, cooling, and domestic hot water with a 260-liter tank and compact hydraulic integration.
- 14 kW power for heating and cooling
- Integrated 260 L water tank
- Advanced controller with 2-zone management
€7,946.00€21,512.70
Recommendations by housing profile
- 70–100 m² well-insulated apartment with underfloor heating
- Heating only: Monobloc 5–7 kW.
- Heating + DHW: Kit with tank 180–200 liters.
- DHW only: Heat pump 150–200 liters.
- 120–160 m² house with low-temperature radiators
- Heating only: Monobloc 9–12 kW.
- Heating + DHW: Kit 9–12 kW + tank 200–300 liters.
- DHW only: 200–270 liters.
- Cold climate or high DHW demand (families of 4–5 people)
- Prioritize units with good performance at -7 °C and tanks of 270 liters.
Frequently Asked Questions (FAQs)
- Do I need a hydrokit for heating only with a monobloc? No: an outdoor monobloc unit is sufficient for heating without adding a dedicated hydrokit.
- Can I keep my radiators? Yes, if they are low-temperature; if not, consider switching to suitable emitters or High-Temp equipment.
- And if I already have solar panels? Perfect: set up the aerothermal system to take advantage of surplus energy, especially for domestic hot water. * Ask our team which DHW heat pumps are compatible with photovoltaics.
- How long does installation take? It is usually completed within 1 to 3 days, depending on complexity and construction work.
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