Ac unit for the house: ultimately cooling or meaningless power guzzler?

It’s completely normal in the auto: just switch over on the air conditioning and after a couple of minutes you’ll be enjoying the cool air.
In German apartments and houses, nevertheless, this is the exception-but why?

Nevertheless, it’s not precisely enjoyable to wallow bed when the temperature level within is 27 degrees.
A/c for customers promise the solution to the unbearable warmth.

Prior to you buy, you need to believe twice about whether the acquisition is rewarding, since there are numerous catches.