If your air conditioner is not cooling, then it is time to consider air conditioning maintenance. After calling a HVAC contractor, he tells you that your AC unit is low on refrigerant. Simply adding refrigerant may not fix the problem. Read on to find out how refrigerant affects the function of your air conditioning unit.

Check For Leaks

An air conditioning unit works by cooling your home to your desired temperature. At installation, the coolants put in the unit are supposed to last a lifetime. A HVAC unit is a sealed system, which means no fluid should escape. However, contaminants, wear and tear and accidental damage are things that cause your unit to need a charge of refrigerant.

A leak can also cause a need for more refrigerant. It causes the refrigerant to leak out of your system. Your HVAC unit will start to cool down until blowing out warm air. A HVAC professional should be able to fix any type of leak. After fixing the leak, he or she will test the repair and charge your system with the correct amount of refrigerant.

Compressor Stops Working

If your unit is low on refrigerant, then it can stop your compressor from working. A compressor needs a certain amount of refrigerant to cool it down. If not, it will start to overheat. Overheating is bad because you do not want your compressor to burn out. This results in having to buy a new one. Replacing a compressor is one of the most expensive repairs for air conditioning system. Some homeowners may even choose to replace the entire unit instead of making this replacement.

Malfunction With Evaporator Coil

An air conditioning system must have a specific refrigerant charge to function properly. The effectiveness of your system decreases when the charge drops. Not enough refrigerant causes your heat exchange cycle to weaken. This results in warm air coming out of your vents.

It also causes decay to speed up and cause problems with the evaporator coil absorbing heat. An evaporator coil that malfunctions can not cool the refrigerant down enough. This results in ice developing across your coil. Ultimately, a block of ice will develop over your evaporator coil. It will halt your heat exchange cycle.

An AC unit removes the heat from inside through an evaporator coil to cool down a home.  This heat is moved to the outside cabinet and released. Refrigerant is the vital ingredient that carries the heat through the lines and coils. There is no cool air without this coolant.