How To Unfreeze Air Conditioner Lines. What causes an air conditioner to freeze up? How do you unfreeze an air conditioner?
When this happens, the cool air will not be discharged properly and eventually a huge block of ice may built up on the evaporator coil. Water and electrical appliances do not mix. First, switch your thermostat to off and your fan to on.
First know that this will take a few hours.
Dealing with ac units that freeze up. Check your filter as soon as you turn the thermostat to off. Check your air filter and replace it if needed. As a result, your air conditioner can freeze.