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Section of baseboard hear will not heat up

georgearoush
georgearoush Member Posts: 7
in THE MAIN WALL

I have a gas base heating system. This year a section of the baseboard is not heating up. This problematic section has a loop-back pipe and at the end of this loop-back pipe, there is an air vent (back to this in a bit).

At the boiler, I drained the water to get air out, and didn't see much air. I have done this 2 times already, each time I let water run for a good 10 minutes. On the problematic baseboard, I opened the air vent and all I get is water (I emptied a full bucket). After doing this, water starts to circulate into this problematic baseboard but the problem repeats after few days. If I open the air vent again and let some water run off the vent, the baseboard start to heat up again. This cycle has been going on for about 3 weeks now. This was not a problem last year.

Any ideas what's the issue?

(my apology, I don't now under what category to post this question)

Comments

  • Intplm.
    Intplm. Member Posts: 2,217
    edited December 22

    You possibly have a leak… a very small leak. Look for the leak and fix it.

    Purging air is what you want to do. Isolating the zones and purging the problem area with make-up water.

    I'm guessing you have an air scoop on this hot water hydronic heating system?

    Air scoops don't really help when problematic air issues arise. If after purging the air out properly and the problem continues, a microbubble air separator like a "Spirovent" or equivalent should be installed to replace the air scoop. Doing this should eliminate your problem.

  • ScottSecor
    ScottSecor Member Posts: 908

    I t appears that you have a lack of circulation. The founder of this site (Dan Holohan) has taught us that if your bleeding a boiler, pipe or radiators and no air comes out, "it aint an air problem."

    My guess is there is inadequate flow to this area of the house. Could be a valve that is closed, a high restriction in the piping, etc.

    Any changes to the piping, circulator pump, etc. in the last year?

    LRCCBJ
  • georgearoush
    georgearoush Member Posts: 7

    This is a new boiler was installed six years ago, and no piping was modified or added during the installation. I never had this issue with the old boiler or the new one till this year. The new boiler was installed by a professional company. My assumption is that the pump might not be powerful enough or is beginning to fail. Is that a possibility?

    Could anyone recommend a reliable plumber in or around the Worcester, MA area? My apologies if this type of a question is not allowed on this board.

  • Intplm.
    Intplm. Member Posts: 2,217
    https://forum.heatinghelp.com/discussion/comment/1828851#Comment_1828851

    Your question is very much allowed here.

    Look for the "Find a contractor" selection in blue at the top of this page.

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