Ceiling Registers Sweating

I noticed just today that one and only one of the ceiling supply registers is dripping a lot of condensation.

Ceiling registers sweating.

In summer when the air conditioning is on the reverse happens. My upper level systems ducts are in the attic. It s a natural process and similar to the way a chilled soda begins to sweat once you take it out of the refrigerator on a hot day. Setup a ladder below the ceiling vent with the greatest amount of condensation.

Improper ventilation and insulation of home attic space can produce high humidity levels and trap. Loosen the two screws holding the ceiling vent in place with a phillips screwdriver while keeping one hand on the. This traps heat in the attic which then warms the ceilings. If you ve noticed condensation on an ac vent air conditioner vents sweating or worse an ac vent leaking water you re right to be concerned and start investigating what might be going on.

The most common cause of ceiling condensation is an attic with too little insulation and ventilation. It is almost 100 outside and humid today. If you let it go you could end up with property damage along with a potential air conditioner repair bill. Since dew point temperature is the temperature at which water vapor condenses into water the result is sweating.

The threshold for condensation to occur is that the temperature of the cold surface has to be below the dew point of the water vapor in the nearby air. A dirty air filter can indirectly cause water to drip from the ac vent in the ceiling by causing the ac to freeze up. Sweating happens when the warm moist room air contacts the chilled diffuser face while the supply air temperature is below the dew point temperature. As the frost melts usually after you turn off your ac the condensation can drain via your ac vents.

As the humidity level rises outdoors condensation will gradually begin to form on the surface of your air conditioning ducts. Condensation on your ceiling can cause water damage and promote the growth of mold or mildew. The system is running on low speed so far anyway. In an attic like this wintertime ceiling condensation can form when cold air from the attic hits your warm ceiling.

The colder the air is inside the duct the greater the chance of ductwork sweating.