Remove the cover and inspect the drain for debris.
Condensation line joined to house vent in attic.
In an attic like this wintertime ceiling condensation can form when cold air from the attic hits your warm ceiling.
The vent opening should always rise above the trip level of the condensate overflow switch when it is in the primary drain line or pan or above the secondary aux overflow port on the primary drain pan.
They are prone to building up condensation.
Try to identify the access point on the drain line which might be a t shaped vent with a pvc cover.
Check all possible entry points for water leaking from outsi.
2 the condensate line is not dripping.
If it just drains outside to building exterior your probably don t need a trap or vent but do make sure it has adeq.
It may be located directly under the indoor air handler in your attic or utility closet.
Newer homes can be affected as well.
If the drain line is connected to a plumbing drain leading to sewer it should have a trap and a downhill vent.
Most building codes don t address humidity issues and are also pretty lax on the level of insulation required in your attic especially around those previously mentioned attic bypasses.
Improving your attic s air sealing and insulation prevents attic air from reaching your ceiling and it s a fairly easy job to do yourself.
Condensation dripping from a ceiling vent can have detrimental effects on the ceiling material surrounding the vent as well as carpeting and.
In this quick video i show you what to look for if you have condensation build up in your attic.
Also attic condensation isn t a problem limited to only older homes.
How to prevent condensation in ceiling vents.