A clogged drain pipe is the most common cause of standing water in the drain pan.
Attic air conditioner drainage.
Instead water drips from the entire central air system.
Because entire central air system is lying on its side in the event of condensate drain pan failure water does not drip in one general location.
If you see standing water in the drain pan your drain.
This humidity is left behind in the form of condensation on the coils.
Typically those 3 4 pipes are plumbed into a bathroom sink s drain that is on average 1 1 4 or 1 1 2 in diameter.
If you find water in the drip pan clean or replace the condensation line.
Turn off the power to your hvac system at the thermostat and at the breaker.
Remove the cap from the condensate drain line.
As air passes over the evaporator coils in your air conditioner it cools down and loses some of its humidity.
Use the suction hose of a wet dry vac to suck the clog out.
Some air conditioner condensers are located in closets or utility rooms.
Locate your condenser which is usually in the attic.
Fix the hose attachment to the wet dry vac s hose and position it into or flush with the end of the drain line.
How to clean your air conditioner drain 1.
For furnaces in the attic there is a second condensate drain pan.
This is in place as an added layer of protection against water damage.
In new homes city codes require drain lines from the air conditioner s condensate line which are often located in the attic to tie in or be plumbed to the home s plumbing system.