The main function of air conditioner is to maintain comfortable indoor environment. Air conditioners deliver comfortable indoor environment by delivering the following three functions:

  • Maintaining comfortable room temperature
  • Maintaining humidity levels
  • Evenly distributing air across the room
  • Delivering filtered pure air inside the room.

Air conditioners rely on the fundamental property of gases to cool the surrounding air. As the pressure on the gases decreases, they expand and cool; increasing the pressure makes the temperature rise. These changes can also be called as evaporation and condensation. Thus, the two components of split air conditioners are known as evaporator unit (indoor unit) and condenser unit (outdoor unit).


The outdoor unit of split room air conditioners contains the most important parts of split room air conditioners such as condenser, condenser fan and compressor amongst others.

Function of a compressor in air conditioners is very similar to a human heart. It compresses the refrigerant by increasing its temperature and pressure before sending it to the condenser.

Condenser Coil
The high temperature and high pressure refrigerant from the compressor comes in the condenser where it has to give up the heat. Condenser coils typically made of copper or other metals that easily transfer heat. Your air conditioner runs more efficiently when excess heat leaves the system quickly, so keeping the coils clean will lower your utility bills and lengthen the lifespan of your air conditioners. Outside units are susceptible to collecting dust, pollen and other debris, but they are easier to clean than interior coils. Keeping the coils clean is vital to proper heat exchange. When dust and debris collect on coils, the particles form an insulating layer that prevents refrigerant to condense. It is very important to note that it is very easy to clean condenser coils made of copper tube and aluminium fin due to its design. On the other hand, cleaning a coil made up of alternate materiel is really difficult and this leads to dust choking, gas leakage and drop in efficiency and thus affects the life of the room air conditioners, increases your electricity and maintenance bill.

Condenser Cooling Fan
The heat generated within the compressor has to be thrown out else the compressor will get too hot in the long run and its motor coils will burn leading to complete breakdown of the compressor and the whole air conditioner. Further, the refrigerant within the condenser coil has to be cooled so that its temperature becomes low enough to convert the gas into liquid form.


The connecting piping which connects the indoor and the outdoor unit is made of copper tubing. The refrigerant at low temperature and low pressure leaves the capillary tube enters the evaporator or the cooling coil at the other end.

The connecting tubing is made up of copper since it is highly ductile and malleable element. The copper tubing can be easily bent as they are flexible enough so they can turn into angles and connected easily. The copper tubing used for condenser and evaporator facilitate high rate of heat conduction.



Functioning of the indoor unit results into cooling effect inside the room. The connecting tube supplies liquid refrigerant to the evaporator coil through expansion device called capillary tube. The hot air from the room passes through the evaporator coils leading cooling effects. The evaporator coil is a copper coil made of number turns of the copper tubing with one or more rows depending on the capacity of the air conditioning system. The cooling coil is covered with the aluminium fins so that the maximum amount of heat transfer takes place and room is delivered with cooled air. Your AMC service provider cleans evaporator and condenser coils and thus enabling it to perform at its best.