If your noticing ice around your air conditioner's condenser coil, or the unit has stopped operating because of freezing, there are a few possible causes.
1. Lack of air flow. An air conditioner works by taking the heat from inside the home and blowing it over the evaporator coil located outside the home. This split-system enables the heat exchange performed by the refrigerant to take place. Without the exchange of warm air the temperature of the coil will continue dropping, increasing the likelihood of a freeze up.
2. Low refrigerant levels. As the level of refrigerant drops, so does the pressure inside the system. When a smaller amount of refrigerant is forced to expand the same amount, it lowers the temperature.
3. Low outside temperature. If an air conditioner is run when the outside air is too cool, the pressure inside the unit can drop, causing a freeze up. This can occur at temperatures of around 62 degrees.
4. Malfunctioning mechanical systems. A damaged refrigerant line, broken fan, even a clogged up air filter, can cause the evaporator coil to freeze up.
Have air conditioner problems? Call Maitz Home Services, we can help diagnose the cause and offer solutions to fix the problem.