How to Clean Out Condensation in a Furnace

Cleaning out condensation in your furnace will keep it running efficiently. Dirt, dust, mold and mildew build up in a furnace, creating clogs and reducing air flow. When a condensation drain line has excess water due to clogs, that water can back up and cause a leak in the unit. Regular maintenance that includes cleaning the furnace condensation line will eliminate this problem.

Bleach
Wet/dry vacuum
Furnace filter

Instructions

- 1
  Turn off the furnace and disconnect the circuit breaker for the furnace.
- 2
  Unscrew the cap off the access pipe located on the exterior of the furnace.
- 3
  Pour 1 cup of bleach into the access pipe to remove any build up in the condensation line. Restore power and turn on the furnace.
- 4
  Remove the filter off the outside drain line after disconnecting power again if you have a stubborn clog bleach will not remove.
- 5
  Attach a wet/dry vacuum to the condensation drain line. Suction any condensation from the line and dislodge any clogs.
- 6
  Discard the filter in the furnace and replace with a new one.
- 7
  Flip the switch on the circuit breaker to restore power. Turn on the furnace.

How to Hook Up an HVAC Capacitor

How to Check a HVAC Capacitor

Air Conditioners