Water Leaking around Ceiling Vent in Kitchen

1st step: make sure there's not a decomposing body in the attic. Is this a ceiling vent with a fan or just a vent for central air/heat?

Chances are you have an obstructed drain tube.

Condensation

coil is dirty or frezing up allowing water to leak.

It is normal for an air conditioner to leak water out the back. This water is actually the humidity being taken out of your house. Being vented out in to the garage is always an issue with condensate water. I have seen some people take a funnel and run a hose outside the garage somewhere. Keep the vent closed. It will be harder to cool the house with the vent open because it lets outside air in to the house.

it happens when aircondition is run for cooling and evaporator is frozen of ice. if you turn off aircon ice will defprost from evaporator.

I seriously doubt it's the AC. It may be the draing in the upstairs shower, If it's a water line it is a very small leak and is probably puddling in you ceiling. if not nbeing absorbed. Best thing is contact your homeowners insurance because you are going to not only have a plumber to deal with , but a mols issue as well. Sorry, good luck.

leakage from my central air unit from drain pan, please help

your hose is to long you should vent it stright out wall if you can't you can buy a small inside vent kit it take so long to dry becuase it's not exsusted proper

ok this unit should have a silicone seal around the pan so water does not collect under it if old silicone is worn away scrape old silicone away and redo new silicone around unit so it sits properly make sure all the water is gone before sealing because you run the risk of mold build up under it; let it dry or help it dry thats up to you

but would like little more info on what this is on