What I should know about air conditioning:

How does a single-split air conditioning system work?

Definition and functioning of a mono/single-split air conditioning system A mono-split air conditioner (also called single-split air conditioner) is used to cool or dehumidify individual rooms. Some of these models offer an additional function of heating the room. Every single-split air conditioning system consists of two main components, the so-called indoor and outdoor unit. Just like in the case of a refrigerator, during cooling or dehumidifying the heat is absorbed by a modern refrigerant in the indoor unit and released in the outdoor unit after passing through an insulated pipe system. When heating, the heat is analogically directed from outside to inside. Sensors in the indoor unit can be used to set and ensure the desired room temperature. Single-split air conditioning systems are mounted on the wall or ceiling, depending on the model.

How does a multi-split air conditioning system work?

A multi-split air conditioning system is used when several rooms or floors in a building are to be air-conditioned. A multi-split air conditioning unit also makes sense if an entire building complex is to be cooled. Modern air conditioning systems are able to optimally combine indoor and outdoor units. Depending on which model is used, 2 to 6 indoor units can be connected to an outdoor unit. Additionally, the user can choose between wall units and ceiling cassettes. Thanks to the plethora of possible combinations, a multi-split air conditioning system can be individually adapted to any requirement.

In general, a distinction is made between a multi-split inverter and a multi-split ON/OFF. The indoor unit dehumidifies, cools and filters unpleasant sticky air in the room. The refrigerant flows through the lines to the indoor unit. There it evaporates and absorbs the existing heat in the rooms in this process. As a result, gaseous refrigerant is formed. Through a pipe it reaches the outdoor unit. There it is compressed and releases the heat back to the outside air when changing to a liquid form.

In a multi-split air conditioning system, the cycle takes place again and again until pre-set target temperature in the rooms is reached. When it happens, the outdoor unit switches off automatically while the indoor unit fan continues running. The moisture that was removed from the rooms is directed in the form of condensate water either directly outside or to a drain. In a multi-split air conditioner, all indoor units can be installed independently and controlled individually. Advanced technology allows for 360 air regulation in the rooms is possible. Moreover, it offers additional functions such as an anti-cold air function.

What should you consider when buying an air conditioning system?

There are two main features that you should particularly take into account when choosing an air conditioning system that matches your needs. If intensive use is planned, it is recommended to buy a device with the best possible energy efficiency class, such as A++, in order to subsequently save on operating costs. Furthermore, noise level during use should be considered when purchasing the system. To make your decision in this respect easier, you should know that 10 decibels already mean doubling of the volume. Some air conditioners also offer a comfortable sleep/silent mode for quieter operation. Other additional functions, impacting individual decisions, may be a 24-hour timer, child lock or self-cleaning function. There are also high-quality models additionally equipped with different air filter systems, which are therefore particularly suitable for people with allergies.

Installation of a split air conditioning system - what is needed?

- Air conditioning system with an indoor and an outdoor unit
- Remote control for the operation of the indoor unit, which is usually included
- Refrigerant pipe in the required length and any accessories for installation
- Control line (connection of the indoor and outdoor unit)
- Condensate hose and possibly condensation pump, if continuous installation with a slight slope is not possible
- Wall bracket for wall mounting or floor bracket for floor installation of the outdoor unit
- Power cord (power supply to the outdoor unit)
- Cable duct for laying cables and lines

Can an entire floor be cooled with a single-split air conditioner?

Yes, this is possible if the cooling capacity of the air conditioner is sufficient for the conditions on the floor. Yet the cooling and heating capacity is calculated for the entire area. Wall openings such as doors obstruct air circulation. If they are closed, it is completely prevented. A multi-split system is therefore more efficient , as a separate indoor unit is installed in each area.

How many indoor units can be connected to one outdoor unit?

It depends on the manufacturer and the size of the outdoor unit. You can buy models to which up to eight indoor units of different capacities and designs - wall, chest or ceiling units - can be connected.

Can air conditioners also be used for heating?

They are also suitable for heating thanks to the latest heat pump technology. In principle, a heat pump works like an air conditioner, but with the opposite aim: the air conditioner extracts heat from the room to dissipate it outside, and the heat pump extracts heat from the outside to release it as heating energy to the room. It is a good alternative to conventional heating thanks to its high energy efficiency.

How is condensation water discharged in split air conditioners?

A condensation hose is attached to the indoor unit of the air conditioner. It is either directed to the outside together with refrigerant pipes via a taphole or an opening, or the condensate is discharged separately, for example into waste water. The water drain must not be interrupted and must have a constant gradient. Otherwise a condensate pump is necessary. The condensate that appear in the indoor unit when in cooling mode and in the outdoor unit when in heating mode is drained via the condensate hose or condensate tray. The condensation water tank, in which the moisture collects, should be checked regularly. On very hot days, it may be necessary to empty it several times a day.

How is the condensate discharged in mobile air conditioners?

Several litres of condensed water can accumulate per day. They have to be discharged. The water is collected in an integrated water tank. An indicator inform you when it is full. Afterwards the cooling is automatically stopped. The tank is then emptied and the unit can be switched on again. There are also units in which the condensate is continuously used to cool the refrigerant, which can significantly increase the performance of the air conditioner.

Are air conditioners a danger to health?

No, quite the opposite is true: the filter provides clean air, so that well-being is improved. Odours, pollen, dust, gases, vapours and pollutants from building materials or carpets are also removed. Air conditioners certainly do not make people ill. Importantly, the temperature can be set individually, as everyone has their own perception of cold. Most people find a temperature of 22 degrees Celsius plus/minus 2 degrees pleasant.

Does the air filter need to be changed?

The filter of interior air should be replaced before the season, as it gets dirty over time and consequently the air flow deteriorates. The air filter on some models can also be cleaned according to the operating instruction. This can be done without much previous knowledge or technical expertise.

What precautions must be taken when transporting the device?

The outdoor unit of the air conditioner must be stored and transported in an upright position so that the compressor does not get damaged. The components inside are mounted on springs. If the inclination is too great, they can unhook.

How long does it take until the device can be put into operation after transport?

It should rest in an upright position for at least two hours after transport. It is even better to wait 24 hours before commissioning.

How often should the air conditioning system be maintained?

The air conditioning system should be checked every two to three years by a certified refrigeration engineer. Such a person checks the tightness and operational safety of the device. If the device is operated all year round, annual maintenance interval is recommended. In the case of commercially used systems, it is required by law. Exact maintenance intervals of an air conditioner depend on the model, operating times, dust loads and location.

How long does an air conditioner last?

The service life of an air conditioner is approximately 10 to 15 years, depending on operating times and maintenance intervals. Not too many instances of switching the device on and off, and small temperature differences between the indoor and outdoor units have a positive effect on the service life.

How to get professional advice?

Detailed advice, professional planning, efficient processing of the order as well as timely and professional installation from one source - this makes sense! With the help of a specialist company, an air conditioning system can be installed properly and as desired. A specialist ensures that the air conditioning system is installed correctly, so that cold air flows to where it is actually needed.


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