Turn hvac system off.
Blow out ac drain line.
Kill the power for the air conditioner where you will be blowing air through the drain line.
How to unclog ac drain line.
Place a piece of tape over the switch so it isn t turned on while you are working.
Then attach the suction hose of a wet vac to the line and try to suck the clog out.
If you can separate the cleanout from the ac or block the path of water back to the ac drain pan you can insert the cut off garden hose into the drain line as shown in this video and just gush.
Regularly cleaning your drain line can help your equipment run more efficiently.
Remove cleaning port cap.
Vacuuming will be more effective if you have a partner plug up the other end of the line.
Over time your air conditioner hvac drain pipe gets clogged up and starts dripping because of the mold mildew and algae buil.
For this to work well you need to make a tight connection between the hose and the line.
If the unit has turned off due to a blockage you may need a bucket to collect the condensation resting in the drain pan.
You can find the cut off switch for the ac unit in the main circuit breaker.
You ll know your ac drain line is clogged if you see water pooling in the pan underneath the unit inside your home.
There are two methods to clean out your air conditioning drain line.
Once the drain line is clear use a funnel to slowly pour a gallon of white vinegar through the tube.
If that doesn t solve the problem locate the drain line access point near your indoor air handler.
Clean out your drain line with bleach in early springtime each year to kill mold and mildew and prevent future clogs.
Method 1 for small blockages in the ac drain line.
To clear these clogs you will need to suck them out with a wet dry vac.