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one \"slow\" radiator

are the first two things to do. Is the problem radiator toward the end of the main?

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  • Eugene_3
    Eugene_3 Member Posts: 3

    Hi All,

    I have a steam/one-pipe system and one radiator on the second floor seems to be "slower" than others. When other two on the same floor are hot, this one makes very weak hissing and is barely warm.

    Eventually, thermostat on the first floor shuts off the furnace and the cycle ends - my radiator is just slightly warm. When I try to prolong the cycle by increasing the thermostat setting by a few degrees, the radiator becomes hot and nice, although it still takes longer then any other.

    I went thru a checklist: replaced the air valve, service valve is fully open and seems to be ok, the radiator is tilted - no results.

    Is there any way to have the thermostat to make longer cycles to overcome this? Any other feedback is appreciated. I could see some potential improvements, like venting and insulating the main in the basement, but, overall, everything works fine for me, except this one radiator, that is also unfortunately in our bedroom.

  • Eugene_3
    Eugene_3 Member Posts: 3

    thanks for quick reply. yes, the radiator is towards the end of the main.
  • Steamhead (in transit)
    Steamhead (in transit) Member Posts: 6,688
    Insulate and vent the main

    measure the length and diameter of the main (and any other mains you may have) and we can tell you what vents you need.

    For insulation, fiberglass pipe insulation with 1" thick walls is the right stuff. The cheap foam you buy at home centers will just melt off.

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  • Eugene_3
    Eugene_3 Member Posts: 3
    one \"slow\" radiator - looking for a pro

    Can somebody come and take a look? I am in 07024 - Fort Lee, NJ.
  • John_173
    John_173 Member Posts: 63
    a modest proposal

    Have you tried the Find A Pro feature under resources on the ribbon across the top of the web page?
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