Aerothermal energy is one of the most efficient technologies for producing hot water for sanitary use and for home air conditioning. Its operation is based on the use of heat present in the outside air to generate heating, cooling and hot water, which makes it an alternative sustainable financing model and low energy consumption.
In this article we will explain in detail how aerothermal energy works for the supply of hot water, the different types of systems available, their advantages, prices and key considerations for their installation. If you are looking for an option Management y organic farming for your home, read on to find out everything you need to know.
What is aerothermal energy and how does it work?
Aerothermal energy is a technology that uses the heat from the outside air to generate thermal energy.It is based on the cooling cycle of a heat pump, which extracts energy from the air, compresses it and transfers it to the heating system or to the domestic hot water.
The aerothermal process is divided into several stages:
- Evaporation: The heat pump's outdoor unit captures heat from the ambient air and transfers it to a refrigerant.
- Compression: The refrigerant passes to a compressor, which increases its temperature and pressure.
- Condensation: The heat from the coolant is transferred to a water circuit, heating it to supply it to radiators, underfloor heating or hot water accumulators.
- Expansion: The refrigerant returns to its initial state and the cycle repeats.
This process allows obtaining hot water with reduced electrical consumption, since the system uses up to 75% of renewable energy from the air.
Types of aerothermal systems for hot water
There are several types of aerothermal systems depending on the way in which they generate and distribute heat:
Aerothermal energy for compact DHW
In this system, the heat pump and hot water tank are integrated into a single unit. Its installation is simple and it is ideal for replacing conventional electric water heaters.
Advantages:
- Lower installation cost.
- Efficient option for homes with little space.
- Easy installation without the need for external pipes.
Disadvantages:
- It does not allow powering heating systems.
- It absorbs heat from the air in the room where it is located, which can affect the ambient temperature.
Compact air source heat pump with ducts
Similar to the compact version, but with the possibility of taking air from outside through ducts. This prevents the room where the unit is located from losing temperature in winter.
Monobloc aerothermal energy
In this case, the heat pump is installed outside and connected to the water tank inside the home via pipes. It is ideal for homes with outdoor space.
Bibloc Aerothermal
It consists of two units: one outside (heat pump) and one inside (hydrokit with exchanger and water accumulator). They are more efficient systems, but require a more complex installation.
Benefits of aerothermal energy for hot water
Choosing an aerothermal system for DHW has multiple advantages:
Energy efficiency
Aerothermal systems can achieve coefficients of performance (COP) of 3 to 4, which means that for every kWh of electricity consumed they produce between 3 and 4 kWh of thermal energy.
Economic savings
Although the initial investment is greater than that of an electric water heater, the savings on the energy bill allow the cost to be amortized within a period of 3 to 5 years.
Sustainability
By harnessing a renewable energy source, helps reduce CO2 emissions and contributes to the fight against climate change.
Compatibility with other technologies
It can be combined with systems such as solar panels to maximize energy savings and achieve a higher level of energy independence.
How much does it cost to install an aerothermal system for DHW?
The price of installing aerothermal energy for domestic hot water varies depending on the type of system and the power required:
- Compact aerothermal energy: from €1.900 but also €3.000.
- Monobloc aerothermal energy: from €4.000 but also €8.000, including installation.
- Bibloc aerothermal energy: from €7.000 but also €12.000, depending on the capacity of the system.
Factors that influence the price:
- Tank capacity: The greater the capacity, the higher the price.
- Home insulation: If the home is well insulated, energy demand will be reduced.
- Geographic location: In very cold areas, system performance may decrease, affecting savings.
Installing aerothermal energy at home: preliminary considerations
Before installing an aerothermal system, it is essential to evaluate a series of factors:
Available space
It must be determined whether there is enough space for the outdoor unit and the hot water tank.
type of housing
Single-family homes are usually more suitable, but it is also possible to install aerothermal energy in apartments, although with some limitations.
Climate of the area
In areas with extremely low temperatures, a support system such as electric resistance may be necessary.
Maintenance of aerothermal systems
The maintenance of aerothermal energy is minimal, but there are certain key aspects:
- Cleaning filters and outdoor unit to avoid blockages.
- Checking the coolant level to ensure correct operation.
- Periodic inspection every 2 to 4 years, depending on the power of the system.
Thanks to its low maintenance, aerothermal energy is presented as an option comfortable y reliable for the supply of hot water and heating in the home.