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A lot of nonsense stories do the round about air-conditioning. It would be environmentally unfriendly energy suckers and you could get sick from working in a conditioned environment. Time for some nuancing in this area: the misunderstandings about air conditioning.
1. Air conditioners are energy suckers
An air conditioner indeed consumes more energy than a fan on your desk. Roughly you can count on a consumption of between 1 and 5 kW. Above that you are really talking about heavy, professional systems and we leave that aside for a moment. That sounds like a lot, but modern air-conditioning systems handle energy very efficiently. For example, an air conditioning system can also heat in the winter, saving you gas. This way you make much more efficient use of electricity. Most fixed systems from well-known brands fall under the A category of the energy label. The operation of the heat pump is expressed in a COP value (coefficient of performance). A high COP value indicates a more efficient use. The systems with the highest values are even eligible for an energy investment allowance (EIA) when you have the air conditioning system installed for a company. And of course you help yourself when it is less warm (eg at night) just to open a window. Then the air conditioning also has to work less hard in the morning.
2. Air conditioning is a disease
You often hear that people think they have a cold or have become sick of the air conditioning. This is only possible if it is a seriously polluted system and that is not the case with well-maintained air conditioning systems. On the contrary, air-conditioning systems remove harmful substances from the air by filtering them. Asthmatic or allergic people can therefore benefit from good air conditioning. Sick or cold you will not be in the draft. They are bacteria and viruses that make people sick. Of course you can get sick if several people are sick at the office. An air conditioning system spreads the air more over the workspace and as a result you could become ill. So you will not get sick of the air conditioning itself, but possibly because the windows and doors are closed and sick people will spread the viruses or bacteria that they carry around the room. However, you must be careful with excessive temperature differences (for example, a too cold set air conditioning inside and a high temperature outside). People can not cope with sharp and sudden temperature changes and such a temperature shock can affect your resistance. In general it is recommended to make the temperature difference with outside no greater than a grade of 6.
3. Air conditioners make a lot of noise
This misunderstanding is due to fixed air conditioners due to their weaker brothers: the mobile air conditioners. Indeed, these devices often make a lot of noise, especially when they have to run at their highest power. Although there are also considerable differences: let yourself be well informed if you want a mobile air-conditioning for example in the living room. The fixed air conditioners of the renowned brands, on the other hand, usually do their job in a whisper quiet. Manufacturers have paid particular attention to limiting the sound in recent years. The inverter technology, in which a system has to work less hard, helps with this. A good air conditioning that is on average level, you barely hear. That also applies to the outdoor units (very nice for the neighbors). Keep in mind the technical details when ordering your air conditioning. The noise level is expressed in decibels (dB (A)). Every 3 dB (A) means a doubling of the noise level. In other words, an installation of 24 dB (A) produces twice as much sound as an installation of 21dB (A). The latter, incidentally, is sound to the rustle of leaves.
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