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.
Ceiling registers sweating.
My upper level systems ducts are in the attic.
The colder the air is inside the duct the greater the chance of ductwork sweating.
I noticed just today that one and only one of the ceiling supply registers is dripping a lot of condensation.
In summer when the air conditioning is on the reverse happens.
Improper ventilation and insulation of home attic space can produce high humidity levels and trap.
Condensation on your ceiling can cause water damage and promote the growth of mold or mildew.
This traps heat in the attic which then warms the ceilings.
Setup a ladder below the ceiling vent with the greatest amount of condensation.
Condensation on your ceiling occurs when the attic space above is poorly ventilated and insulated.
If your air conditioner supply vents are sweating you have a cold surface the vent and near it you have air with water vapor in it.
Sweating ceiling supply register.
If you let it go you could end up with property damage along with a potential air conditioner repair bill.
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.
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.
Since dew point temperature is the temperature at which water vapor condenses into water the result is sweating.
A dirty air filter can indirectly cause water to drip from the ac vent in the ceiling by causing the ac to freeze up.
The most common cause of ceiling condensation is an attic with too little insulation and ventilation.
It is almost 100 outside and humid today.
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.