Knocking pipes using Direct vent water heater
Posted by Mike Connolly on May 19, 19100 at 22:33:44:
Our house is heated through and by our water heater. Last year we followed the directions to vent the system prior to turning on the A/C.

Since then we have consistent knocking in several areas of our home, which covers three stories. Additionally we noticed that the house was more difficult to maintain proper heating this year with the knocking problem.

We have followed the builders advice in draining the system, but have yet to remove the air damns in the pipes.

Can you suggest any other method or process in which to remove air from the pipes?

Mike Connolly

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