Air conditioners

Air conditioners: a guide to choosing the ideal solution for your home

In modern times, air conditioning has become an indispensable element of every home, office or public space. The ability to regulate temperature, humidity and air quality is key to ensuring a comfortable and healthy living environment. Developments in air conditioning technology have made it possible for these devices to provide not only cooling in the summer months, but also heating in colder periods, air purification and even humidity control.

Understanding air conditioning

Air conditioners have become an essential part of our lives, providing comfort on hot summer days and, in some cases, warmth during cooler periods. But how exactly do they work and what is important to know in order to choose and use them as efficiently as possible? Here is a thorough look at how air conditioners work and their key features.

Basic operation

Air conditioning works by extracting heat from the indoor space and transferring it to the outdoor environment. It does this by using a refrigeration cycle that includes a compressor, condenser, expansion valve and evaporator. The refrigerant circulating through the system absorbs heat from the indoor air and then releases it to the outside. The process not only cools the indoor air, but also removes moisture, which helps to create a more comfortable living environment.

Types of air conditioners

Air conditioners vary depending on the type and installation method. The most common types are split systems, where there is a separation between outdoor and indoor units, window units, which are installed in a window opening, portable units, which can be moved around, and central air conditioners, which are designed to cool larger buildings or entire homes. Each type has its own advantages and disadvantages and is suitable for different needs and space constraints.

Energy efficiency

The energy efficiency of an air conditioner is extremely important, as it has a direct impact on electricity consumption and operating costs. Air conditioners with a higher energy rating use less energy to cool or heat the same amount of air, which means lower costs and a lower environmental impact. Finding appliances with inverter technology that adjusts operation according to demand is key to maximising energy efficiency.

Additional features

Modern air conditioners offer many additional features such as advanced air purification filters, quiet operation, programmable thermostats and even connectivity to mobile apps for remote control. These features can enhance the user experience, help improve air quality and allow greater flexibility in indoor climate control.


Regular maintenance of your air conditioner is essential for optimum performance and longevity. This includes cleaning or replacing filters, checking the refrigerant and cleaning the outdoor unit. Regular maintenance ensures that the air conditioning works efficiently and prevents possible breakdowns.

Understanding the basic principles of operation, types, energy efficiency and maintenance of air conditioners will enable you to make a more informed purchasing decision and ensure that the air conditioner you choose will meet your needs and expectations.

Choosing the right air conditioner

Choosing the right air conditioner is crucial to ensure the comfort of your home or business premises. Given the variety of models, capacities and features available on the market, it is important to understand your needs and the constraints of your space in order to choose the most suitable air conditioner. Here are the key factors to consider when choosing the right air conditioner:

Room size and volume

The first step in choosing an air conditioner is to determine the size of the room you want to cool or heat. The size of the air conditioner must be adapted to the square footage and volume of the room, as too large an air conditioner will unnecessarily increase energy consumption and too small an air conditioner will not effectively regulate the temperature. As a general rule, you need about 1 kW of cooling power for every 10 square metres.

Energy efficiency

Energy efficiency is another key factor to consider when choosing an air conditioner. Appliances with a higher energy rating (e.g. A+++) are more economical and have lower running costs. Look for appliances with inverter technology, which adjusts the compressor operation to reduce energy consumption.

Type of air conditioner

The type of air conditioner best suited to your needs can also influence your choice. Split systems are suitable for most homes and offices because they are easy to install and quiet to operate. Portable units are a good choice for temporary cooling or in rooms where a stationary unit cannot be installed. Window units are an affordable solution for smaller spaces.

Additional features

Consider additional features such as digital thermostats, programmable timers, night modes, air filtration systems and remote control. These features can improve comfort of use, air quality and even reduce energy consumption.

Price and guarantee

The final factor to consider is price, including purchase price, installation costs and expected operating costs. It is also important to check the warranty conditions and ensure that you choose a reliable manufacturer or supplier that provides adequate support and service.

Thorough preparation and research is essential when choosing the right air conditioner. Taking the above factors into account will help you find the unit that best suits your needs and ensures long-term satisfaction.

Types of air conditioners

When talking about air conditioners, it is important to understand the different types available on the market, as each type serves the specific needs and requirements of a room. Choosing the right type of air conditioner is key to ensuring optimum efficiency, energy savings and comfort in your home or business space. The main types of air conditioners are described in more detail below: split systems, window units, portable air conditioners and central air conditioners.

Split air conditioners

Split air conditioners are among the most popular choices for homes and offices thanks to their efficiency, aesthetic appearance and quiet operation. This system consists of two main parts: the outdoor unit, which is usually installed on the outside wall of the building, and the indoor unit, which is installed in the room to be cooled or heated. One of the key advantages of split systems is the possibility of installing several indoor units connected to one outdoor unit, allowing individual temperature control in different rooms. Split systems are extremely flexible and can be installed in almost any room without the need for extensive construction work. In addition, their inverter technology allows for exceptional energy efficiency by adjusting the compressor speed according to the cooling or heating demand, reducing energy consumption and costs. Advanced features such as air filtration, quiet operation and the possibility of remote control via smart devices are further reasons for their great popularity.

Window air conditioners

Window air conditioners are an affordable and practical solution for cooling small spaces. As the name suggests, these units are installed in a window frame or through an opening in a wall, with half of the unit protruding outwards. This type of air conditioner is ideal for those looking for a simple and quick cooling solution, without the need for complicated installation. Although window units may not be as aesthetically appealing as split systems and do not offer the same level of quietness, they are extremely efficient at cooling a single room and can be a good choice for rental apartments or temporary living spaces. However, it should be borne in mind that their installation is limited to spaces where this is technically feasible and that their performance may affect the aesthetics of the building façade.

Portable air conditioners

Portable air conditioners offer a high degree of flexibility and are ideal for spaces where it is not possible or practical to install stationary units. These units can be moved between different rooms and usually only require access to an external opening for the release of warm air. Although portable air conditioners offer comfort and flexibility, they can be less efficient than stationary units and often consume more energy to achieve the desired temperature. In addition, they can be louder, which is important to consider when making a purchasing decision.

Wall-mounted air conditioners

Wall-mounted air conditioning is one of the most popular and efficient solutions for cooling and heating individual rooms or small apartments. Wall-mounted air conditioners are characterised by the indoor unit being mounted on a wall in the room to be conditioned, while the outdoor unit is installed outside the building. This type of air conditioner is highly appreciated for its compact design, aesthetic appearance and relative ease of installation. Wall-mounted air-conditioning is particularly suitable for rooms where there is no possibility of installing a central air-conditioning system or where flexibility is needed to regulate the temperature in different parts of the building.

Central air conditioning

Central air conditioners are designed to cool large buildings, including apartment blocks, commercial premises and large residential buildings. This system uses a network of vents to distribute cool air throughout the building, ensuring even temperature and comfort in all rooms. Central air conditioners require a larger initial investment and are more complex to install, but offer a high level of comfort, even temperature distribution and the possibility to connect to other systems in the building, such as ventilation systems and heating systems. Due to their capacity and efficiency, central air conditioners are often the choice for commercial buildings and larger residential projects.

Each type of air conditioner has its own advantages and disadvantages, so choosing the right type depends on the specific needs and requirements of the space you want to cool or heat. It is important to consider the size of the room, installation options, energy efficiency and of course budget to find the ideal solution for your needs.

Efficiency and energy saving of air conditioners

In today's climate, where awareness of the importance of protecting the environment and the need to reduce energy consumption is higher than ever, choosing energy-efficient air conditioners is crucial. The energy efficiency of an air conditioner not only has an impact on reducing operational costs, but also on reducing the carbon footprint of households and businesses. Understanding how air conditioners use energy and how you can optimise their efficiency is important for anyone who wants to contribute to a more sustainable and energy-saving lifestyle.

What is energy efficiency?

The energy efficiency of air conditioners refers to the ratio between the amount of electricity consumed and the amount of cooling (or heating) effect produced by the air conditioner. The higher this coefficient, the more efficient the appliance. Energy efficient air conditioners are designed to maximise output (cooling/heating) with minimum energy consumption, leading to lower electricity bills and a lower environmental impact.

Inverter technology

One of the key technologies that makes air conditioners more energy efficient is inverter technology. Traditional air conditioners run at full power until they reach the desired temperature, then switch off until the temperature drops or rises again to a certain point. Inverters, on the other hand, adjust the compressor speed according to the current cooling or heating demand, reducing temperature fluctuations and energy consumption. This not only improves comfort, but also reduces wear and tear on components, extending the life of the unit.

Energy labels and certificates

When choosing a new air conditioner, it is important to pay attention to energy labels and certificates. In the European Union, air conditioners come with energy labels that clearly show their efficiency. They are classified in classes from A+++ (most efficient) to D (least efficient), allowing customers to easily compare models and choose the one that best suits their needs and capabilities.

Energy saving tips

In addition to choosing an energy-efficient air conditioner, there are several ways users can further reduce their energy consumption:

  • Regular maintenance: cleaning or replacing filters and checking the system can improve airflow and operating efficiency.
  • Correct installation: avoid installing indoor units in places where direct sunlight or heat from other sources will affect the temperature sensors.
  • Using programmable thermostats: Setting the thermostat to the optimum temperature and using programmable settings can reduce unnecessary operation of the appliance.
  • Insulation and sealing: insulating rooms and sealing windows and doors can reduce the loss of cold air, reducing the need for air conditioning.

By choosing an energy-efficient air conditioner and following these energy saving tips, you can significantly reduce your energy costs while helping to protect the environment.

Air conditioning maintenance

Maintenance of air conditioning systems is key to ensuring their long-term performance, reliability and energy efficiency. Regular and proper maintenance not only prolongs the life of the appliance, but also ensures that the air conditioner, e.g. Comfora operates at the highest possible efficiency level, reducing operating costs and maintaining optimum indoor air quality. Below are the key steps and recommendations for air conditioner maintenance that you can follow to ensure that your air conditioner performs at its best.

Cleaning and replacing filters

One of the most important components of air conditioning maintenance is the regular cleaning or replacement of its air filters. Dirty or clogged filters can greatly reduce the efficiency of an air conditioner by making airflow difficult and forcing the unit to work harder than necessary, which increases energy consumption. It is recommended to clean or change filters at least once every two to three months, depending on the use and air quality in your environment.

Checking the refrigerant

The level of refrigerant in your air conditioner is another important factor that affects its efficiency. Too little refrigerant can cause the air conditioner to fail to cool efficiently, while too much refrigerant can lead to other mechanical problems. Checking and adjusting the refrigerant level should be carried out by a qualified technician.

Cleaning the outdoor unit

The outdoor unit of an air conditioner is also important for its efficient operation. Leaves, dirt and other debris can clog the outdoor unit and reduce its efficiency. Regular cleaning around and on the outdoor unit will ensure that the air flow is unobstructed and that the air conditioner is working efficiently.

Checking and cleaning drainage lines

Clogged or blocked drainage lines can cause water to drip and damage your air conditioning or home. Regular checking and cleaning of these lines can prevent potential water problems and ensure that your air conditioner is draining condensation properly.

Annual service

In addition to regular maintenance, which you can do yourself, it is recommended to have your air conditioner serviced by a qualified professional at least once a year. A professional technician will be able to check all the components of the system, including the thermostat, electrical connections and cooling cycle, to ensure that your air conditioner, such as the air conditioning unit, is in good working order. Perfera in optimum working order.

Regular and proper maintenance of air conditioning systems

is essential to ensure efficient operation, extend service life and reduce the risk of costly repairs. By following these simple steps, you can ensure that your air conditioner will run efficiently and reliably all year round.

Air conditioning is an essential element of modern living and working environments, ensuring comfort and improving quality of life. When choosing the right air conditioner, it is important to consider your specific needs, the size of the room and its energy efficiency. With proper selection, installation and maintenance, your air conditioner will provide optimum performance and comfort all year round.

Show more >


The Seltron service will be closed from 27 December to 29 December 2023.
Any emergencies or issues that arise during our absence will be dealt with as soon as the service reopens on 3 January 2024.
Thank you for your understanding.

Opening hours of the Seltron store on 30 December 2023.
  • from 7.00 to 12.00