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Type of piping for pool heater

karenn Member Posts: 5
I am about to get a 3/4" gas pipe installed for a pool heater. I am trying to figure out what type of piping I should get installed. Does the CSST piping make noise when the gas is on for the pool heater? (it will be installed in my attic space). Should I go with CSST and galvanized/black or should I go with Galvanized only?


  • ChrisJ
    ChrisJ Member Posts: 11,978
    I do not believe CSST makes noise but pretty much everyone on this forum will tell you to use black iron pipe.

    Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment
    JUGHNE Member Posts: 8,969
    I would second the black threaded pipe.

    Your installer has determined you need only 3/4" supply?

    Heater in the attic.......never heard of that one.....but then I am just a country boy.
  • karenn
    karenn Member Posts: 5
    The heater is not in the attic, but the piping will be installed in the attic.
  • karenn
    karenn Member Posts: 5
    I guess i will go with Black iron. Not sure if I am convinced yet.
  • Solid_Fuel_Man
    Solid_Fuel_Man Member Posts: 2,307
    CCST is glorified appliance connector. We cannot legally run an appliance connector in a concealed space due to its paper thin wall construction. Yet.....CCST can be run pretty much everywhere.  I would only run black pipe in my own home, or copper/black if we are talking propane. 
    Serving Northern Maine HVAC & Controls. I burn wood, it smells good!
  • mattmia2
    mattmia2 Member Posts: 3,991
    CSST has a tendency to get holes burned in it and start a fire with nearby lightning strikes.
  • Zman
    Zman Member Posts: 7,001
    There are less safe ways to move natural gas than CSST. Black pipe is preferred.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
    EBEBRATT-Ed Member Posts: 10,348
    I agree that CSST is junk. I have used it only a couple of times. Temporary feed to a couple of roof top units, above a drop ceiling with 2' square tiles almost touching the joists. Couldn't get a 10 footer in there no way and the CSST was protected.

    Check the size of your pool heater they are usually 250,000-300,000 btu. More like 1" or 1 1/4" pipe
  • karenn
    karenn Member Posts: 5
    Thank you all. I am convinced. I will go with black pipe
  • @JUGHNE said,
    "Your installer has determined you need only 3/4" supply?"

    Your pool heater must be VERY small. You can't get much gas out of a 3/4" pipe. What is the input rating of the heater?
    Often wrong, never in doubt.
    JUGHNE Member Posts: 8,969
    Maybe with a short run with 2 PSI system?
  • mattmia2
    mattmia2 Member Posts: 3,991
    Or propane