Air Conditioning is based on the precise control of temperature, humidity, air flow and air cleanliness. LG Split air conditioners regulate these elements around the clock to provide you with a comfortable, relaxing atmosphere. Day and night, year after year.
     
     
Cooling Mode:

Excess room heat is absorbed by a special liquid, a refrigerant, sealed within the system.

As the refrigerant in the indoor unit absorbs the room heat, it changes into a gas and is carried through small, copper tubes to an outdoor unit which releases the heat into the atmosphere.

 The gas is converted into a liquid again and flows back to the indoor unit where it is fanned over it and out into the room. This cycle is repeated until the preset temperature is reached.


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Heating Mode:

Heat pump units also allow the above cycle to be reversed. A heat pump extracts "free" heat from the outdoor air, even on the coldest days when the temperature may fall as low as -10 degrees centigrade, and transfers the heat indoors.
Heat pump units therefore avoid the need for a boiler and allow you to cool and heat with the same unit, with savings in costs and energy throughout the year.


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The Heat Pump is an electrically driven unit that will provide both HEATING and COOLING from the same equipment.
It does this by transferring unwanted / free heat from one area to another with a process called the
REVERSE CYCLE.

This transfer can be made between air to water, water to air, water to water or air to air using the same process.
During the COOLING (Summer) season the Heat Pump performs the same as any standard air conditioning system. It absorbs heat into the refrigerant from the area being cooled and transfers and rejects it outside.

However, during the HEATING (Winter) season, The Heat Pump activates the REVERSE CYCLE and absorbs heat from outside and transfers this heat, again via the refrigerant, to the area requiring heating.
 
 
THIS IS AN EXTREMELY ECONOMICAL AND EFFICIENT SYSTEM, AS THE AVERAGE COEFFICIENT OF PERFORMANCE (C.O.P.) IS EQUAL TO 1:3
For example:

1 Kilowatt of electrical input would supply approx., 3 Kilowatt of heating output.
 

Compared to a C.O.P. of 1 : 1 for an electric heater.
 
Most people think that when ambient temperatures drop to near freezing point that insufficient heat is available. THIS IS NOT THE CASE. An efficient Heat Pump can operate and produce a viable heating output down to at least - 5 degrees centigrade . Some systems can operate down to - 15 degrees centigrade.
It should be noted, however that at these temperatures the average C.O.P. will reduce to approx.,
1 : 2 and that an automatic  temperature / timer defrost cycle might be activated for approx., 10 minutes every 1and a half to 2 hours.

Important
Although the difference in cost between the two systems is minimal, a COOLING ONLY air conditioner CANNOT be converted to a HEAT PUMP and should be borne in mind when considering air conditioning.