If it just drains outside to building exterior your probably don t need a trap or vent but do make sure it has adeq.
Condensation line joined to house vent in attic.
It may be covered by a removable access panel.
Also attic condensation isn t a problem limited to only older homes.
Check all possible entry points for water leaking from outsi.
In summer when the air conditioning is on the reverse happens.
In an attic like this wintertime ceiling condensation can form when cold air from the attic hits your warm ceiling.
Condensation dripping from a ceiling vent can have detrimental effects on the ceiling material surrounding the vent as well as carpeting and.
Try to identify the access point on the drain line which might be a t shaped vent with a pvc cover.
How to prevent condensation in ceiling vents.
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.
This helps ensure that if a backup occurs that the water properly trips the switch instead of overflowing out of the vent.
Newer homes can be affected as well.
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.
They are prone to building up condensation.
It may be located directly under the indoor air handler in your attic or utility closet.
In this quick video i show you what to look for if you have condensation build up in your attic.
Remove the cover and inspect the drain for debris.