My Walk in Cooler is Blowing Warm Air!

Yikes! Your walk in cooler certainly shouldn't be blowing warm air. To begin, visually inspect the evaporator coil. Are the fins iced over?

If they are iced over, then either shut the walk in cooler down completely, or make a temperature adjustment to the warmest position (this shortens the defrost time). Leave the unit alone until the evaporator coil is completely free of ice—this may take a while if the build-up was heavy. Never attempt to manually defrost or remove built-up ice by hand or with tools as it could easily cause a refrigerant leak! Once clear, reset the temperature control to the correct range (38 to 40 degrees Fahrenheit).

If the evaporator coil is not iced over, or if the icing occurs again, place a service call to determine and correct the cause of the problem.

If the problem is temporary, the unit may have just been in a defrost period. Just to be safe, the settings on the defrost timer should be reviewed and adjusted if necessary.

More importantly, make sure you keep up to date on performing routine maintenance on your walk in cooler. There are some good tips in our post "How to Clean Your Walk in Cooler (5 Guidelines)"!