Air Conditioning Buying Advice: Tips on Buying Air Conditioners and Air Conditioners

The air conditioner ABC

Air Conditioning Buying Advice: Tips on Buying Air Conditioners and Air Conditioners: buying

In summer, high temperatures with oppressive heat and humidity make many people worry and one longs for cooling off.

Air conditioners help to make the stay in closed rooms bearable, but there is a risk of cold or summer flu due to excessive temperature differences. Therefore, air conditioners should be set so that between the outside and inside temperature at most 6 to 7 degrees lie. In addition, the morning should be thoroughly bumped before temperatures rise to replace the used air with fresh air. In office rooms, the temperature should ideally be between 20 and 22 degrees Celsius. In addition to the heat helps a sunscreen in the form of an awning, a roller blind or awning.

Anyone who thinks about purchasing an air conditioner will find in this overview the most important differences between the device types and tips for air conditioning systems.

Determining the performance of air conditioners and air conditioners

The first question you should ask yourself before buying an air conditioner is what cooling capacity is needed for the room. Depending on the device type and model, they differ in their cooling capacity, which is why advice from a specialist company is recommended, which calculates the demand based on individual specifications. As a rule of thumb for private use apply about 60 watts per square meter, For the air conditioning of a 30 square meter room you need about 1800 watts. If there is no suitable air conditioning, choose the next larger model, for example, 2.1 kW or 2.5 kW.

Health tips for air-conditioned rooms

Air conditioners provide a dry air that dries out the mucous membranes in the eyes and nose during longer or regular stays and bacteria can easily einnisten. Therefore, it is important to drink a lot of liquid in air-conditioned rooms. For acute complaints ointments and drops for eyes and nose help.

Regular maintenance is required so that germs, bacteria or mold do not enter the air-conditioning system and spread throughout the room. Otherwise, their operation can cause cough, colds and other discomforts.

Air conditioners: The different device types

Air Conditioning Buying Advice: Tips on Buying Air Conditioners and Air Conditioners: buying

Mobile air conditioner.

For air conditioners, one differentiates between three device types:

  • Mobile air conditioners
  • window device
  • Split units

However, a direct comparison of the device types is difficult, as they are distinguished by their Construction, performance, their energy consumption and in Comfort differ from each other. Thus, two-part split devices are usually smaller, take up less space than mobile and one-piece air conditioning units, where the technology is housed inside the device. In addition, two-piece Split devices are available in various designs and are usually mounted on an outer wall. Only the principle of cooling is the same in these air conditioners.

Mobile air conditioners (one-piece)

One-piece air conditioning units can be found in almost every hardware store, especially in summer. Their biggest advantage is the lack of mounting on the wall or the window, which is why they are often used in rental apartments. However, they are expensive and cause a higher noise level in operation than two-piece air conditioning systems, since the chiller is located in the living room.

The functionality is simple: Mobile air conditioners draw the heat from the room air and lead it outside through a hose. This is usually in the space of a tilted open window or door. At the same time, this is a big drawback to these models, as warm air from the outside flows in through open windows or doors and the room's cooling is lower with higher power consumption for the device.

In addition, the air humidity is reduced when cooling the room, resulting in a sense of freshness. The condensate accumulating during this process is collected in the device and must be emptied manually from time to time.

One-piece window devices

Air Conditioning Buying Advice: Tips on Buying Air Conditioners and Air Conditioners: buying

Wall air conditioner.

These compact air conditioners are in one Wandddurchbruch built into the wall of a room. They are pushed into the cutout so that the rear part protrudes outwards. The size of the wall breakthrough depends on the cross-section of the device and is on average 45 x 40 cm. However, this intervention is a structural change, which is why home improvement in Meitwohnungen need the consent of the landlord. Due to the compact design, the noise level is higher with this type of device than with two-part air conditioning systems.

Split units (two-piece air conditioning)

Air Conditioning Buying Advice: Tips on Buying Air Conditioners and Air Conditioners: conditioning

How a split air conditioner works.

Air Conditioning Buying Advice: Tips on Buying Air Conditioners and Air Conditioners: advice

Split air conditioning in the living room.

This type of air conditioner consists of two parts: an indoor unit that controls the room and an outdoor unit with a chiller. Both parts are connected to two insulated copper pipes. Due to the structure, the operation is more complex than with one-piece devices: The indoor unit filters, cools and dehumidifies the room air. This is done by a refrigerant that the Air Conditioning flows through and evaporated in the indoor unit. As gas it takes the space heating and leads it over the line to the outdoor unit. There it is released as heat to the outside air. Then the refrigerant liquefies again and flows through the other line into the indoor unit.

Due to the separation of the device parts, the noise level is lower than with one-piece air conditioning systems. In addition, split-type devices provide better room air conditioning and use less power than one-piece models.

Laying the cables should be done by a specialist air conditioning company. In principle, the time required for installation and assembly of a split device amounts to two to three hours.

Noise emission from air conditioners

Depending on the air conditioner selected, the noise level will be higher or lower. Nevertheless, it should not increase the normal noise level in living rooms at night, which corresponds to a noise level of about 22 to 25 dB (A) sound pressure. An energy efficient split air conditioner produces about 20 decibels and is thus quieter than wind rustling leaves, which reach about 25 decibels.

Energy consumption of the air conditioner

In addition to the air conditioning of the room should be home improvement on the energy efficiency of the air conditioner to avoid too high power consumption. Since December 2004, air conditioners have been labeled with the energy label standardized by EU law, which provides information about the power consumption of the devices. From 2013 onwards, inefficient devices were gradually removed from the market.

For air conditioners, the energy efficiency class from "A" to "G", from 01.01.2015 from "A +" to "F" and from 01.01.2017 from "A ++" to E is indicated. As with household appliances, "A" stands for energy-efficient and economical consumption, while "G" stands for high-power air conditioners. Anyone choosing to purchase an air conditioner should therefore pay attention to models with the marking of at least A + to A +++, as these devices are even more efficient and energy-efficient.

Heating with air conditioners with heat pump function

In the transition period, when the temperatures are too high, that turning on the heating system is not worthwhile, but is so low that it is perceived as cool in the living quarters, a two-part air conditioning with heat pump function serves as an alternative heating. - Provided the purchased model has this feature. The outdoor unit extracts the heat from the ambient air, compresses it and heats the room air in the room.

Annual operating costs of air conditioning

The indication of the energy efficiency gives information about the estimated annual energy consumption in kWh for the cooling operation per device. If, for example, the energy efficiency "A" is given as 310 kWh, the following consumption results: 310 x 0.125 (electricity price per kWh) = 37.75 euros (annual operating costs). An air conditioner with energy efficiency "G", however, would require annual operating costs of 78.00 euros.

Where to buy air conditioning units?

Mobile and one-piece air conditioning systems are already available in hardware stores or in online shops. For split devices, interested parties should contact an installer for air conditioners or the refrigeration and air conditioning retailers, as they will also advise on the installation and the associated wall breakthrough there.

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