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Steam radiator not getting hot

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heatguy34
heatguy34 Member Posts: 11
in THE MAIN WALL

I have one radiator not getting hot. The other radiators on this floor are hot. I removed the air vent and I made sure the valve is open all the way. I left it like this for 20min and it is still ice cold.

Comments

  • pecmsg
    pecmsg Member Posts: 6,787

    has it worked in the past?

  • heatguy34
    heatguy34 Member Posts: 11

    as far as the homeowner can remember it has. Told him I’d have to pull the radiator to check the valve, but he decided to leave it. If the valve is fine I guess there is some blockage along the pipe to the radiator?

    mattmia2
  • mattmia2
    mattmia2 Member Posts: 15,653

    is this one pipe? probably piping that has shifted or a main vent that has failed or something like that. a "blockage" other than the washer falling off inside the valve is unlikely. Where the piping toward the radiator is hot and cold may give you some clues about where the water or the air can't get out.

  • bburd
    bburd Member Posts: 1,247

    If the shutoff valve has not failed in a way that blocks the pipe and it's not an air vent problem, check for proper pipe pitch. Any horizontal pipe in the radiator runout should slope back toward the main so condensate cannot pool anywhere.

    —
    Bburd

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