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What Causes My Haier Window Air Conditioner Unit to Freeze Over?

Haier produces eco-friendly and electric room air conditioning units. The eco-friendly units use less electricity than standard room a/c units and they also use an environmentally friendly type of refrigerant. The room air conditioners range in power from 6,000 to 18,000 British Thermal Units (BTUs). If ice forms on the back of your Haier a/c unit it could be one of many problems.


Outside Temperature

The temperature outside might be too cold, which often happens in the fall when the nighttime temperatures drop.  Turn the a/c off on the unit, and turn the fan on, which will melt the ice and provide cool air for your room from outside.


Too Cold

The temperature setting in your room being too cold also causes ice.  To fix it you have to turn the temperature higher in the room to allow the unit to melt the ice and to avoid it freezing again.


Too Powerful

Your Haier a/c unit may freeze if it produces too many BTUs for your room.  If the unit is too powerful for the room, it will run more than it needs to and freeze up.

Get a unit that fits the size of the room, or run the unit warmer to prevent this from happening. 

About the Author

Hollan Johnson is a freelance writer and contributing editor for many online publications. She has been writing professionally since 2008 and her interests are travel, gardening, sewing and Mac computers. Prior to freelance writing, Johnson taught English in Japan. She has a Bachelor of Arts in linguistics from the University of Las Vegas, Nevada.