There are many places in world where temperature is either to low even below the freezing point or it is to hot like 50 degree Celsius so that air conditioning or central heating system is needed in homes and other commercial places. In now a day’s life in almost every part of the world cannot exist without such human friendly items. Even people are now habitual to use such item and in some parts of world these item are fall in luxury items. robertpaulsells.com/mount-kisco/air-conditioning-and-heating-systems-in-new-homes-mt-kisco-real-estate/ has some nice tips on this. In Canada people use centrally heated system because the temperature of Canada decrease from month of September and it decrease to that extent where existence of human is only depends upon the centrally heated system of home and offices.
In other parts of world like in south Asia and Middle East temperature is too high that it reaches to 50 Celsius which not tolerable for human beings. In this situation people cannot live without air conditioning. So that in Middle East all places included hotels, homes and other commercial places are centrally air condition and inner temperature of places kept under 26 Celsius so that human life can exist there. Even in transport air conditioning system is must without that system people cannot use any kind of transporting vehicle in such places. Both of extreme examples show the necessity of air conditioning and heating system.
Air conditioning system uses such gases which were not good for healthy society before 3 decades. Many social groups rises the voice against that thing after which scientist finds some new gases which can done the same work but society dose not effect and companies which made such things also aware their consumer about such things and white name of gas which is used in their cooling system. Many companies write on their machinery that “CFC free” which means that CFC gas is not used in their machinery because that gas reacts with the ozone layer and due to that global temperature is rising.
Power is also one of the factors which are hurdle between the excessive of use of heating and air conditioning system. These systems take lot of power while operation and due to that many power of country is either wasted or use on luxury of higher class. Powers will the next biggest problem for all nations of world. Nations are striving to full fill their power generation need but some 3rd world countries are failed to do so because it is not the easy issue to resolve.
Centrally heated system mostly used in Europe and Canada in which temperature decrease below from freezing point. Heating system in those countries worked on electricity and use water which than converted into steam and heat the area. In Canada government has passed the role those companies providing electricity should cut supply even if any of their customers have not paid bills especially in winter because without electricity people can die over there.