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Signs of Air Conditioning Problems


Wet carpeting on hot, humid days can indicate a clogged air conditioner drain. When the drain is working correctly you'll see a good amount of water dripping to the pavement under the vehicle after you park.

A vibration or abnormal noise when the fan is on could indicate debris in the blower fan (mice like to make nests in fans).

A reduced amount of air coming out the vents, especially if it happens after driving for awhile, might mean the air conditioner's evaporator is freezing up.

A musty or mildewy odor when the fan is first turned on, or all the time when the system is running, can indicate that mold or mildew is growing in the evaporator box.
You can reduce the buildup of mold and mildew by turning the A/C recirculation switch off when you park the vehicle. If your vehicle doesn't have a recirculation switch, turn the A/C switch away from the "Max Air" position when you park.

Some vehicles will still develop a musty odor--even when you take these steps. Many service departments offer a cleaning procedure for the evaporator.


A Few More Auto Air Conditioning Tips
When you get into a hot car, roll your windows down a little for the first few blocks. If you have a recirculation button, make sure it's turned off. After the hot air is gone, turn recirc on to get the most out of your system.

We're all concerned with fuel mileage, but modern auto air conditioning systems are pretty efficient. Turning the A/C off results in minimal gas savings.
If you discover a problem, take the vehicle to a trusted technician.

Steve