How to Clean a Clogged Condensate Drain

Cleaning a clogged condensate drain can be a simple process, but it varies depending on the type of drain. 

Here's a general guide for both internal and external condensate drains:

1. Internal Condensate Drain: This is typically found in HVAC systems or high-efficiency furnaces. 

a. Locate the drain pan and the drain line. The drain pan is usually located beneath the indoor air handler unit, and the drain line is a PVC pipe that leads away from the pan.

b. Remove any visible debris or buildup from the drain pan. You can use a wet/dry vacuum for this.

c. Use a funnel to pour a mixture of warm water and a few drops of dish soap into the drain line. This will help to break up any clogs.

d. After pouring the mixture, flush the drain line with clean water to clear out any remaining residue.

e. If the clog persists, you may need to use a plumber's snake or a wet/dry vacuum to remove it.

2. External Condensate Drain: This is typically found in air conditioning units.

a. Locate the drain line and the drain pan. The drain line is usually a PVC pipe that leads away from the AC unit, and the drain pan is where the water from the unit collects.

b. Remove any visible debris or buildup from the drain pan.

c. Use a wet/dry vacuum to clear out any clogs in the drain line.

d. If the clog persists, you may need to use a plumber's snake or a wet/dry vacuum to remove it.

After cleaning the drain, it's a good idea to periodically check it to ensure it stays clear. You can do this by pouring a mixture of warm water and a few drops of dish soap into the drain line and checking for any slow drainage or backups.