Mold Growth Due to Air Conditioning System

Submitted By
Tony Martin
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Q:

If your System is over sized the air is colder. system runs a Quicker or cooling the air too fast not removing Humidity. Higher Humidity turns to Mold. The Air conditioner units cool the home and set the humidity level never turn off a vent in a room if your not in it. This make the Out Door heat and humidity enter the room. If you have return Air Vent in this room your pulling in hot air making system run longer.(I CAN BEVEIVE MONEY PIT SAID TURN OFF VENT IN ROOM'S YOU DO NOT USED)this IS INFO FROM 1970'S. And is not true. I keep my temp at 74-75 all the time if your not home the system runs shorter time due to no one opening doors. Now if a system is over charged this make evap., coil to cold too making mold in duct work. To Large system and under sized return in 99% of home's.

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Tony, Thanks for your question.  Oversized A/C systems cycle on/off too quickly.  As a result, they do not run long enough to dehimidify the air and can lead to mold gowth not only in the duct system (where mold will feed on dust particles stuck to the inside of the duct) but also in other areas in the home. I hope this clarifes our point.

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