Turn off your ac unit at the thermostat and at the breaker.
How to clean ac drain line in attic.
Just pour a cup of bleach in the drain line s access opening near the indoor air conditioning unit.
Fix the hose attachment to the wet dry vac s hose and position it into or flush with the end of the drain line.
Remove the cap from the condensate drain line.
At this point you can clean the drain pan with soap.
How to unclog ac drain line.
If the condensate drain line is clogged you will need to use a wet dry vacuum or a special pumpto unclog the line.
If you see standing water in the drain pan your drain line is probably clogged.
Use a handheld or shop vacuum to remove the moisture.
Then use duct tape to seal the gap between the hose and the drain line.
Over time your air conditioner hvac drain pipe gets clogged up and starts dripping because of the mold mildew and algae buil.
Here s what you do.
By pouring a cup of vinegar down your ac drain line you kill the algae mold and other bacteria that can build up and cause clogs.
Locate where the drain line exits your house and make sure it isn t clogged by an insect nest or something obvious.
If that doesn t solve the problem locate the drain line access point near your indoor air.
Use the suction hose of a wet dry vac to suck the clog out.
This will kill any algae mold or mildew that has formed in the pipe.