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Tim H.
Tim H., HVAC Professional
Category: HVAC
Satisfied Customers: 3966
Experience:  Experienced in all aspects of HVAC, both residential and commercial.
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have a commercial air conditioner that been freezing up,what

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have a commercial air conditioner that been freezing up,what the cause?
Please do not rate me until we have finished our dialog and you can rate me as "excellent" service. Thanks for the opportunity to help.
I'm sorry you are having trouble with your unit. It would be most helpful to have a make and model number.
The main causes of freezing up are:
1) restricted filter
2) blower issues (not running, running too slow, dirty blower wheel)
3) unit low on charge or has a restriction in the closed refrigeration system, most likely at the metering device.
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