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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Air conditioner blowing warm humid air, I opened face and

Customer Question

air conditioner blowing warm humid air, I opened face and found the filter glued to the interior with ice.
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.

1. Is indoor blower running? If so system may be low on refrigerant or filter and or coil ma be dirty.

Icing can be caused by a number of issues:

1.Low refrigerant charge

2. Dirty ac filter

3.Indoor fan not coming on

4.Indoor blower not moving enough air acrsoss indoor coil

5.Contactors burned together in outdoor unit causing outdoor to keep running after indoor blower stops.

6.Blocked return or ductwork causing restricted air flow

7.Dity indoor coil

Give me as much information as you can about what is happening and if any of above are noticeable and we will go from here.