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One steam main heats up much more quickly.

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My house has two steam mains off one boiler.  Issue we ran into is that the steam goes to one main more quickly than the other.  To the point that the huge radiators on that line will fill up with steam while the other radiators will feel mostly cold.  The other main will start filling up once the first is full.

Wouldn’t be as big of an issue except the hotter main is on the side of the house we don’t spend that much time in. Any tips?

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  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,540
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    Yes check your air vents in the basement at the end of the steam mains. If the vents don't work replace them. If there are no vents install them or have them installed. Check all radiators for pitch and make sure the radiator vents work as well.

    Is the boiler building steam pressure? What is the pressure control set at?

    Normal steam pressure on a house job is 0-2psi

    post some pictures of the boiler and piping, The ends of the steam mains and a couple of radiators