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.
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.
If the unit has turned off due to a blockage you may need a bucket to collect the condensation resting in the drain pan.
Alternatively you can use an air compressor to blast air into the air handler s end of the drain tube in the hopes of blowing the clog out the other end.
Move the switch to the off setting.
Remove cleaning port cap.
Once the drain line is clear use a funnel to slowly pour a gallon of white vinegar through the tube.
Over time your air conditioner hvac drain pipe gets clogged up and starts dripping because of the mold mildew and algae buil.
Clean out your drain line with bleach in early springtime each year to kill mold and mildew and prevent future clogs.
You ll know your ac drain line is clogged if you see water pooling in the pan underneath the unit inside your home.
Regularly cleaning your drain line can help your equipment run more efficiently.
If the clog is severe start with method 2.
Place a piece of tape over the switch so it isn t turned on while you are working.
How to unclog ac drain line.
There are two methods to clean out your air conditioning drain line.
To clear these clogs you will need to suck them out with a wet dry vac.
Vacuuming will be more effective if you have a partner plug up the other end of the line.
Method 1 for small blockages in the ac drain line.
You can find the cut off switch for the ac unit in the main circuit breaker.