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Radiant sort of?

Thermo Member Posts: 5
Hope no one minds I joined this forum to get an answer to question. I removed a baseboard hot water convector from a small 5x7 bathroom to tile the floor. The floor is finished but I am contemplating not re-installing a new convector. It has been very cold 11F and the bathroom stays around 70F. I am wondering if a looped a couple of copper pipes suspended in the floor joist below "basement" and insulate the bay underneath? I can't use PEX the water temp is too high, and the hydronic system is a one pipe diverter tee style flow so it would not interfere with other convectors. I would avoid the toilet and vanity areas, just maybe two bays from the door to the tub. Anybody ever seen this done before? The bathroom is so small it actually seems bigger with out the convector.


  • STEVEusaPA
    STEVEusaPA Member Posts: 6,132
    11 degrees and you have 75 degrees? Probably don’t need anything, but piping in a towel warmer might be nice.
  • Thermo
    Thermo Member Posts: 5
    Thanks for you reply Steve, I'll look into some towel racks!
  • mrhemi
    mrhemi Member Posts: 28
    Plain copper pipe / tube does not radiate well. Until it becomes "fintube".
    Licensed Steamfitter.
    Licensed Instrumentation & Control Technician.
  • Zman
    Zman Member Posts: 7,446
    Water temp is too high for PEX? How hot is it?
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • Thermo
    Thermo Member Posts: 5
    Running about 190F
  • hot_rod
    hot_rod Member Posts: 19,273
    I’d look into a small electric towel bar, quick heat up, individual control. You may end up using year around
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • GroundUp
    GroundUp Member Posts: 1,573
    Uponor HePex is rated at 200 degrees at 80 psi.
    rick in Alaska
  • rick in Alaska
    rick in Alaska Member Posts: 1,420
    I have done it with 5/8 pex going from baseboard to baseboard in a series loop, and it worked nice. In my case, there was baseboard installed in the bathroom, and I just wanted to warm the floor up a bit. Worked great.
  • Thermo
    Thermo Member Posts: 5
    Thanks for all your input, I going to go conventional and put in a 2 foot slant fin convector. Again, Thanks for all your replies and suggestions.