Low duct temperatures can result in condensation which can accumulate during the winter months.
Water in heating ducts.
Bv015996 11 07am 03.
During the heating season unused air conditioning ducts located in unheated rooms can collect moisture.
While the epa does not recommend frequent cleaning of air ducts a water leak is an exception because it poses health risks when the mold is carried into your house every time you run the furnace.
Condensation can frequently be seen as water drops collecting on the outside of ac ducts and vent openings.
Water that leaks into the air duct and stays there causes mold to breed.
Moisture can also collect in the summer if cool air passes through a duct in a room that isn t air conditioned.
This can lead to air contamination and related health problems as in your home and can.
Water in heating ducts tips water s in soil.
If you see water in any vent you should examine all of the other boots and ducts for water.
The most likely explanation for the water in your ducts is that warm interior air is entering the ducts during the winter and the moisture in the air is condensing on the interior of the cold ductwork.
If it is only in one vent you need to first eliminate the possibility of an interior source such as over watering a house plant a leaking aquarium or someone spilling water nearby.
Moisture can be a sign of low duct temperature.
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It can also form small water pools on the floor in severe cases.
Bad drainage around your house once the water finds its way under to even the smallest opening in the duct it will create a fissure and water will always find its way continuous rain gutter french drains etc will prevent this.
Martin holladay editor of green building advisor responds.
The problem is happening because water often moves sideways through soil instead of straight down.
According to naima during the heating season unused air conditioning ducts located in unconditioned spaces can become saturated with water unless certain precautions are taken.
If the problem has to do with water in the ducts then check your disclouser statements and check with a local attorney about what is required in the disclousre in your state.
There are a few common reasons for water in air ducts.
Long term condensation leads to various issues with your ac system.
When sheet metal ducts are installed in the soil ground water is likely to penetrate during wet weather.