Clean Mold in a Cars Air Conditioning System and check your central air conditioner before calling a repair man

A car air conditioner does not harbor mold, since it is a sealed unit that outside air cannot penetrate. However, mold can grow in your air conditioners vents and connecting hoses. This typically happens when condensation becomes trapped and cannot escape the venting, much like in a shower or pool area, where it never truly dries out.

How to Clean Mold in a Cars Air Conditioning System

Mold loves humidity, and it thrives under these conditions. Fortunately, with a little effort, you can get rid of it, and become proactive so it does not reappear. Mix up the enzyme solution.

Generally, this involves putting a prescribed amount of water and solution into a clean container. You must follow the directions that come with the enzyme solution, however, to ensure your mixture is effective. An enzyme solution literally eats the mold, but will not necessarily work if you do not mix it correctly.

You want to mix the solution, per the brands directions, in your spray bottle. Spray at least 12 squirts into each of your cars air-conditioning vents. Wipe off the excess with your damp rag.

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Allow the car to sit overnight. This allows the enzymes the time required to eat the mold. Do not run your car during this period.

The next day, turn your regular car fan to high power, so it can blow outside air through the vents. This dries the enzyme solution, and with it, the mold. The enzymes will have destroyed the mold.

Once the vents are dry, mold no longer is a problem. .

How to check your central air conditioner before calling a repair man

Look at the air conditioner return vent inside your home. Pull the filter out of the return vent and check for dirt. Change the filter if it is clogged with dirt, dust or animal fur.

If it does not look dirty but has not been changed in awhile, change it anyway given the likelihood of dirt inside the filter that you cannot see. A dirty air filter can cause an air conditioner to freeze up, creating a rise in temperature in the home. Clean the condenser coil located on the outside unit with a regular garden hose.

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Turn the unit off. Hold the hose about four inches from the coil and slowly spray it as if you were painting, with a right-to-left motion. That way you do not miss any areas.

You cannot see the dirt in the coil until brown water emerges from the bottom of the condenser coil. Allow the unit to dry for 10 minutes before restoring power. Allow the central air conditioner time to cool the house after restoring power.

If you replace an extremely dirty filter and do not see a change in the temperature, the reason is most likely to the unit freezing up. Shut off the unit for several hours so it can thaw before calling a repair shop. If the repairman comes and has to defrost the unit himself, you may have to pay for the time allotted for defrosting.


When summer heat arrives, you may find the central air conditioner running but your house less cool than you want. When this occurs, you may be tempted to call a repair person immediately and spend hundreds of dollars on a simple repair you could have done yourself. Before calling the repair shop, check a few things on your own.

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