The major air conditioner repairs carried out are due to the air conditioner not being able to turn on, or the cooling capacity has been reduced, the air flow is lost or it can also be due to the internal components of the air conditioner.
The usual air conditioner components that need to be replaced are the faulty air compressor or condenser, defective air handling unit, defects in the duct system and the air leaks.
If your air conditioner doesn't start, you have to look at the controls and the switches as most of the problems are electrical related. You have to check whether the circuit breaker and the thermostat are properly functioning.
After that you need to check the air handling unit which comprises the return air plenum, air filter, blower fan, cooling and heating coil and the supply plenum. Next you need to check the circuit breakers for the compressors and the air handling units.
If the air conditioning problem is not resolved, then you need to check the duct system i.e. the return air ducts and the supply air ducts and the filters whether they carry air from the air handler to the different intended rooms in the building.
The other most common problem with air conditioners would be that the air conditioner doesn't give good cooling effect. It so, you will need to check the blower unit.
If you find that it is dirty, you should clean it as it causes loss of cool air supply. The reduced cooling could also be due to old or aged air compressors which have to be replaced.
The air compressors are costly and this would be an expensive repair. Cooling effect is reduced even if the condensate from the air conditioner is not being drained properly or there are leaks in the air handler, or due to damaged air ducts or due to the problems in the air conditioner refrigerant system.
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