Why does the airconditioning smell musty
2012 Ford Escape

Why does the airconditioning smell musty

(2012 Ford Escape)
FORD ESCAPE 2012. CAR AIRCONDITIONER: Is there mold in the airconditioning system? And where is the filter located in the car? Why isn't there a glass bubble level to see if there is gas in the airconditioning system? Why is there a musty smell every time you put on the airco? Which should I check first? freon pressure/level, air filter, mold or all three ?
What seems to make the problem better or worse? nothing
How long have you had this problem? months
Tags: ford, escape
1 answer & 0 comments
Popular Answer
on September 17, 2019
Air conditioning systems start to smell musty when moisture continues to collect without the ability to vent properly from the plenum where the evaporator core is -- that's where condensation from the air conditioning system collects and hopefully drains out of a drain to the outside of the vehicle.

First, check to ensure your evaporator drain tube is attached properly and free of restrictions.

Next, you're on the right track with the cabin air filter - check and replace it as needed; check inside the cavity it fits in and see if that cavity is wet or has any debris in it. The filter should be located under the cowl panel on the passenger side.

Regarding "gas in the air conditioning system" - gas is not stored as a liquid. It becomes a liquid during the air conditioning process, but gas itself is not measurable without checking system pressure using a proper set of gauges or preferably a refrigerant "station" machine that can recover and recharge air conditioning systems properly without the risk of expelling refrigerant to the atmosphere (which is illegal to allow).

Your system pressure and refrigerant level have exactly zero to do with your odor concern, and does not need to be addressed unless you are having a problem with proper vehicle cooling.
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General Diagnosis
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on September 17, 2019
Air conditioning systems start to smell musty when moisture continues to collect without the ability to vent properly from the plenum where the evaporator core is -- that's where condensation from the air conditioning system collects and hopefully drains out of a drain to the outside of the vehicle.

First, check to ensure your evaporator drain tube is attached properly and free of restrictions.

Next, you're on the right track with the cabin air filter - check and replace it as needed; check inside the cavity it fits in and see if that cavity is wet or has any debris in it. The filter should be located under the cowl panel on the passenger side.

Regarding "gas in the air conditioning system" - gas is not stored as a liquid. It becomes a liquid during the air conditioning process, but gas itself is not measurable without checking system pressure using a proper set of gauges or preferably a refrigerant "station" machine that can recover and recharge air conditioning systems properly without the risk of expelling refrigerant to the atmosphere (which is illegal to allow).

Your system pressure and refrigerant level have exactly zero to do with your odor concern, and does not need to be addressed unless you are having a problem with proper vehicle cooling.
Sign in to reply

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