Air Conditioner Repair: What You Need to Know

Before trying to carry out air conditioner repair in your home or office, there are certain aspects of air conditioning systems you should know about. When their air conditioning system breaks down or develops a fault, many people try to fix it themselves without fully understanding the concepts involved. However, it is possible for you to carry out a basic air conditioner service once you understand the principles, although HVAC repair (heating, ventilation and air conditioning) is best left to the professionals. Get more informations about Pittsburgh Appliance Repairs various brands.

The normal home or office air conditioner works by simple physics, and consists of two discrete units: the condenser and the evaporator. In the condenser, Freon gas is put under pressure then passed through a heat exchanger, removing heat from the gas and converting it to a liquid. It is then passed through an expansion valve into the evaporator; the liquid Freon expands and evaporates to a gas, the latent heat needed for this coming from the environment, which is then cooled (the cooled air then being blown into the room). The gas heated by the higher room air temperature than goes back into the condenser where the heat is removed and the cycle continues.

Both the evaporator and condenser are sealed units and you can not carry out any air conditioner repairs to these yourself: you will have to call a trained professional. What you can do is to keep everything clean and all the mesh guards and so on clear of debris. You should carry out basic air conditioner operation yourself, but not HVAC repair. Here are some simple air conditioner maintenance, troubleshooting and operation ideas.

  1. System fails to run.

Check the fuses or circuit breakers. If they are good then verify that the thermostat is not set too high. Try lowering it by 5 degrees, and if that fails you need a professional HVAC repair engineer.

  1. No Cooling.

Again, check the thermostat and try lowering it. If that doesn’t work check the condenser air intake. It might be blocked, especially in fall if there lots of leaves flying about. Check the fins of the fan are straight, and if not then straighten them. If nothing works, then call a professional engineer.

  1. Erratic Cooling

 For this and all other faults, all you can really do is to clean the condenser it as far as you can, and if that fails call an engineer. It is not uncommon for units to be blocked by vegetation of one form or another. The condenser will likely be sitting on a concrete pad: make sure that is level, because concrete can sometimes break down and put the condenser and the motor out of the level. That can affect its operation.

The condenser and evaporator are sealed units which is why amateurs find it so difficult to repair their own air conditioner. The most common problem you can fix on yourself is a blocked or dirty evaporator. If you have a regular air conditioner service carried out by a professional then you should not experience these problems, except in extreme weather conditions when vegetation and other debris can be blown into the unit.