Installation and assembly of aerothermal systems (heat pumps) in Barcelona:
The evolution of energy-efficient climate control
Technological advances in heating and air conditioning have led to the emergence of systems that have become the gold standard for comfort in Europe, and especially in Spain. We are talking about aerothermal energy, an innovative technology that uses air energy to heat and cool homes and provide hot water.
HVAC Barcelona (www.hvac.barcelona) is a certified expert in the implementation of aerothermal systems in Barcelona and the province of Catalonia, offering solutions that reduce energy costs by up to 70%.

What is aerothermal energy and why is it ideal for Barcelona's climate?
Aerothermal energy is a type of air-to-water heat pump. It works on the basis of a thermodynamic cycle: the system extracts heat from the outside air (even when it is cool outside) and transfers it to the home's heating or water supply system.
For Barcelona, with its mild winters and hot summers, this is an ideal option for several reasons:
High COP/EER: In Mediterranean climates, where temperatures rarely drop below zero, heat pumps operate at maximum efficiency. For every 1 kW of electricity consumed, the system produces up to 4–5 kW of heat energy.
3-in-1 versatility: A single outdoor unit replaces an air conditioner, gas boiler and water heater. It provides cooling in summer, heating in winter and hot water (DHW) all year round.
Environmental friendliness: Unlike gas or diesel boilers, aerothermal energy does not produce CO2 emissions. This is critically important for Barcelona, where the authorities are actively implementing a "clean city" policy and restricting the use of fossil fuels in new buildings.
Specifics of aerothermal installation in Barcelona and its suburbs
Heat pump installation is a complex engineering process that requires a high level of skill.
HVAC Barcelona specialists take local nuances into account when installing in different areas:
Urban development (Eixample, Sarrià, Les Corts): In Barcelona's apartment buildings, space for installing outdoor units is often limited. We offer compact monoblock systems or split systems with an indoor module that fits aesthetically into the interior of a kitchen or storage room. We also take care of noise level calculations to comply with Barcelona's strict municipal noise pollution regulations.
Private sector and villas (Castelldefels, Sitges, Sant Cugat): Here, aerothermal energy comes into its own. We integrate the system with underfloor heating, radiators and swimming pools. In coastal areas (Gava Mar, Maresme), we pay special attention to the anti-corrosion treatment of heat exchangers, protecting them from the aggressive effects of sea salt.
Types of aerothermal systems we install
HVAC Barcelona works with all the world's leading brands (Daikin Altherma, Mitsubishi Electric Ecodan, Panasonic Aquarea, Vaillant, etc.) and installs equipment of any complexity:
Monoblock systems: All equipment is located in a single outdoor unit. Ideal for properties with limited space inside the home. Water circulates between the unit and the house.
Split aerothermal systems: Consist of an external and internal unit (hydraulic module). The internal unit can have a built-in hot water tank with a capacity of 180–230 litres, which meets the needs of a family of 4–5 people.
High-temperature pumps: Suitable for renovating old houses in Barcelona where classic cast iron or steel radiators are already installed, requiring a high heat transfer fluid temperature.
Low-temperature systems: Ideal for modern houses with underfloor heating and fan coils.
Licences, regulations and guarantees
The installation of aerothermal systems in Spain is strictly regulated by the RITE (Reglamento de Instalaciones Térmicas en los Edificios) regulations. HVAC Barcelona has all the necessary licences. This gives our customers a number of advantages:
Official certificate (Boletín): We issue all the documents required to legalise the installation, which is necessary when selling a property or changing your energy supplier contract.
Access to subsidies: The Spanish government and the Generalitat de Catalunya (Catalan government) often award grants (e.g. Next Generation funds) for replacing old boilers with aerothermal systems. We help prepare the technical documentation to obtain these payments.
Warranty obligations: We provide a full warranty on installation work and equipment. Our specialists undergo regular training with manufacturers, which guarantees compliance with the technology down to the millimetre.
Stages of working with HVAC Barcelona
Technical audit: An engineer visits the site in Barcelona, calculates the building's heat loss and selects the optimal pump power (kW).
Design: Development of a connection diagram to existing or new utilities.
Professional installation: Installation of the hydraulic part, laying of freon lines (for split systems), connection of automation and buffer tanks.
Commissioning: Precise adjustment of the controller, balancing of the heating system and checking of all operating modes.
Service: Follow-up maintenance to keep your system running at peak efficiency.
Why choose us?
We don't just install equipment — we create an energy-efficient ecosystem. Barcelona residents choose HVAC Barcelona for our professionalism, on-time delivery, and clean work sites.
Aerothermal energy is an investment in your future. Although the initial installation cost is higher than that of a gas boiler, the system pays for itself through huge savings on your monthly bills.
Make your home in Barcelona technologically advanced and independent of gas prices. Contact us for a free consultation and detailed estimate.