If you search how to clean a clogged condensate drain line, many air conditioner information websites will recommend using vinegar, especially distilled white vinegar.

CLEANING AN AIR CONDITIONING CONDENSATE DRAIN In order to help prevent the buildup and blockage of the condensate drain line, there are a few various methods of cleaning an air conditioner drain line.

Your Heating, Ventilation, and Air Conditioning (HVAC) system can cause extensive water damage if it’s not maintained correctly. Common causes of HVAC water damage include a clogged drain ...

What Causes a Furnace Drain to Fill With Water? If the furnace’s drain is filled with water, it is either clogged, broken or improperly installed. A condensate line that is unclogged and pitched ...

Use a funnel. If the drain line is clogged at the pan, cut off the power to the air conditioner and remove the side panel so you can get at the pan. Use a wire to clear the drain line.