How to Clean a Furnace Condensation Tube

The condensation tube in your furnace drains condensation buildup inside your furnace into the drain pipes. Over time, the tube can get clogged with other materials mixing with the steam and keep it from draining properly. If this is the case, you can clean the tube to clear the line. Once clear, your furnace will work more efficiently.

Pliers
Bucket
Clamp
1 cup bleach
Water

Instructions

- 1
  Turn off the power on your furnace.
- 2
  Use pliers to remove the clamp around the condensation tube where it meets the furnace’s condensation trap.
- 3
  Drain the tube into a bucket.
- 4
  Place a clamp over one end of the tube and tighten it. Fill the other end with a mixture of 1 cup bleach and 1 cup water. Allow the mixture to sit in the tube for five to 10 minutes.
- 5
  Drain the tube into the bucket. Unclamp the end and flush it with water for three to five minutes to clean it out.

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