The thermostat needs to calibrated properly to ensure that there is not only an accurate operating cycle, but temperature control also. By doing this, you will be sure of a high comfort level and you will save a lot on the operating cost. further reading
The compressor can be damaged if the refrigerant is not charged properly. A compressor is the heart of an air conditioning system. The compressor is a very expensive air conditioning repair. An improperly charged system will cause an increased electric bills. This is due to the fact that a compressor which is improperly charged can reduce the efficiency of the air conditioning system. From a properly charged refrigeration, you will have lower utility bills, longer equipment life and will reduce the air conditioning services. See Coles Air Conditioning
The air conditioning systems ability to reject and remove heat from your house will be reduced if the condenser coil is dirt. This will lead to higher electrical bills and the HVAC running for a long period of time. A dirty condenser coil will lead to failure in the system and regular air conditioning repair. But with a clean condenser coil, you will have low energy bills, proper heat rejection and a reduced run time.
The moist cold coil will have dust and dirt escaping from the air conditioner stick to it. The capacity and performance of the catering equipment will be reduced due to the restriction of the flow of air in the coil. With a maintained evaporator coil, you will get proper air flow in every area of your house, better dehumidification, clean and healthy indoor environment and increased comfort level. Inspecting and changing the air filter every month will help in preventing air conditioning repairs.
While the air conditioner is removing heat from the house, it is also extracting humidity from the air. The system should be drained of the condensation caused by the warm air passing over the cold coil. The condensate drain line is responsible for this. Inspect and clear any foreign objects clogging the drain and algae build up which causes water damages on the floor and ceiling of the house. You will get proper humidity from proper draining.
Dirty blower wheels will affect the flow of air inside your house, limiting your comfort and the capacity of the air conditioning unit. Your comfort, the air flow inside your house and capacity of the AC will be limited if the blower wheels are dirty. Also, it can spread dust particle that irritate allergies and sinus. Home owners can enjoy maximum air flow, improves your comfort level and proper cooling with clean blower wheels.
The moving parts that needs lubrication will lead to not only high electrical bills and frequent air conditioning repairs. This comes from the additional power required to overcome the resistance in the non-lubricated drive shafts and motor. This is a result of the additional power needed for overcoming resistance in drive shafts and motors which are not lubricated.https://en.wikipedia.org/wiki/Air_conditioning