Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

The boiler is on; the pipe near the boiler is hot, but the pipes furthest away are cold. What does that mean, and how can I fix it?

share|improve this question
add comment

2 Answers

There could be air trapped in your system - that is if the pump is working. You might have to bleed the system at the burner and/or at the radiotors.

enter image description here

And a good flush could help, but you might need help with that.

enter image description here

  • A : Bleeding valve
  • B : Trapped Air
  • E : Reducer boiler performance
share|improve this answer
add comment

There are different water heating systems, but I'd check if the the pump that is pushing hot water through the pipes is working.

A circulating pump in a central heating system typically looks like this.

enter image description here

You can tell if your pump is working by:

  • Checking if the pipe is cold or hot each side of the pump. If it gets cold a foot or two after the pump, it is not working.
  • Checking if it hums or vibrates when the heating is on.
  • You should hear the water flow through the pipes when it's on.
share|improve this answer
    
Sorry for the short answer, I edited it. –  Danny T. Jan 6 '12 at 15:49
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.