If your system begins to leak, insufficient levels of refrigerant will lower the pressure in your unit's evaporator coil. This allows humidity in the air to collect and freeze on your unit. An air conditioner freeze-up can cause serious issues with your system if it is not dealt with in a timely manner. The first thing you should do when you notice ice build-up on your air conditioning unit is to turn it off.
Nov 26, 2014· Simply put, your air conditioner is freezing up because something is either causing the Freon in your system to expand more than it is designed to, which in turn is making your coils colder than normal, or something is preventing the air in your house from transferring its heat into your system.
In most cases, you should run the air conditioner on the medium or higher setting to allow enough airflow through the coils. The only time you should use a low fan setting is when the humidity outside is unusually high and the air conditioner is having a hard time keeping the room dry.
Jul 16, 2013· Clean the filter monthly to prevent this from being what causes an air conditioner to freeze. Closed supply registers: Shutting supply registers in unoccupied rooms is a technique for saving money and energy. However, if you close too many, it could end up costing you more if the air conditioner freezes up.
Air Conditioner Freezes Up - LOW REFRIGERANT. When the refrigerant in the system is low due to leakage over time, there will be a decrease in the saturation point temperature of the system. When this happens, it will take a lower temperature for all the refrigerant liquid that has been compressed by the compressor to become vapor in the evaporator.
May 15, 2017· While your air conditioner is thawing, be sure to watch the water levels in the unit. If the drain pan inside the evaporator coil overflows, you can experience water damage in your air conditioner. Why Is My Air Conditioner Freezing Up? 1. Low Refrigerant. Sometimes AC freeze ups can be because of the refrigerant chlorodifluoromethane, also .
Sep 01, 2006· Best Answer: You are right it does sound like you have another issue, maybe low on refrigerant or an air flow problem. The high humidity itself will NOT cause the coil to freeze up. That being said if the coil is already starting to freeze up and the humidity is high in the house it will definitely contribute to the problem.
May 22, 2013· Why Air Conditioners Freeze Up. There are many reasons why your AC unit may be freezing up. Air conditioners need proper airflow to keep the cold coil warm. Warm air from the home is needed for the coil to stay cold and keep the temperature above freezing. Without it, coils freeze before the condensed water can be drained away from the unit.