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Hot water will not flow from boiler to radiant installed floors

IWY Member Posts: 1
Ever since I put a radiant heating system, I cannot get the hotwater to flow from the boiler that is working fine to distribute heated water via a manifold to the five zones in my house. I have had 5 different heating and plumbing specialist and they cannot figure what the problem is. I get hot water, I can feel the hot water, but this is no distribution. The house is cold and when I turn up the thermostat to 70 degrees there is not response. Any suggestions what the problem is would be appreciated.


  • CMadatMe
    CMadatMe Member Posts: 3,086
    Post Pics

    Posting some pics may help. There could be many reasons why no flow. Can you give us an idea of how the radiant is installed. Loop lengths, tubing size etc.
    "The bitter taste of a poor installation remains much longer than the sweet taste of the lowest price."
  • michael_34
    michael_34 Member Posts: 303
    What kind of flooring is this in?

    Is there zone valves? What kind of zone controller? Got a wiring and plumbing schematic you can post on here?

    Thanks Michael
  • Charlie from wmass
    Charlie from wmass Member Posts: 4,314
    Try the find a pro link.

    Too late in the year for too much guessing. It only takes one knowledgeable person to fix it.
    Cost is what you spend , value is what you get.

    cell # 413-841-6726
  • mor
    mor Member Posts: 42
    none at all??

    You can check the floor by walking barefoot or use the back of your hand. Or get one of the IR cameras. But maybe your floor is not delivering enough heat as opposed to 'no flow'.
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