How do I unclog my AC condensate drain line?

How to Unclog Your AC Condensate Drain Line

  1. Turn off your air conditioner. …
  2. Remove the cap from the pipe. …
  3. Check to see if there is any debris stuck in the drain. …
  4. Remove any visible debris and retest for proper drainage. …
  5. Pour in Vinegar. …
  6. Replace the drain cap. …
  7. Remove the drain cap.

How do I know if my condensate line is clogged?





Signs the AC Drain Line is Clogged

  1. Musty, moldy smell near your indoor unit or in air from the registers/vents.
  2. Standing water near the indoor unit.
  3. Water damage in areas near the indoor unit.
  4. AC system is not cooling your home.
  5. AC system shuts down or doesn’t turn on.

What happens if AC condensate drain is clogged?

A Clogged Line Will Freeze Your AC System

A clogged condensate drain line will trap water in your air conditioner. As a result, the evaporator coil will eventually turn to ice. The moisture in the drain line can also freeze, which will cause your air conditioner to turn off.

What causes a condensate line to clog?





When moisture drips off of your evaporator coil, it can also carry dirt and other airborne particles that are present in your home’s air with it. This dirt and debris is what can build up in your A/C’s drain and cause a clog.

How much does it cost to unclog an AC drain line?

Clogged Drain Line

If the condensate drain line becomes clogged, water can back up and overflow into your home, resulting in a messy leak. To flush the line or repair it can cost anywhere from $75-$250. In the case that the evaporator coil needs replacing, you are would pay between $400 to $950.

How do I clear my AC drain without a vacuum?

Most AC drain lines are located outside, near the condenser unit. Push the stiff, thin brush into the end of the drain line. This brush can help you clear any clogs located near the end of the drain line. In most cases, the AC drain line clog will occur farther down, and you’ll need to do a little more work.

Should my exterior AC drain pipe be dripping water?



The condensate line should drain to the outdoors and during humid weather you should see plenty of water dripping from it. If it’s not dripping, it’s not draining! If there is standing water in the drain pan, your condensate drain is clogged!

Should AC drain line be capped?

If the coil is on the negative side it will need a trap and needs to be capped. If you don’t cap the trap on the coil side. The primary line on the pan will suck air not allowing the water to drain while the system is running.

How do I unclog my AC drain pipe with a shop vac?

Use A Shop Vac And Water



Turn the vacuum on. At the same time, get a gallon jug of water and a funnel. Slowly pour water into the drain line access point near your air handler. The shop vac should suck the water (and any debris) out of your drain line and into your vacuum.