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Radiator to fit 17-inch wall width

I am redecorating my kitchen and looking to find a radiator that will fit a 17.5 inch wall including valves. We need around 4000 BTUs for a hydronic system. Is there such a radiator that will fit in this mall in opening?

Is there such a thing as a silent under cabinet radiator? I hate blower noise in the am.


Steve from Denver, CO


  • hot_rod
    hot_rod Member Posts: 22,256
    Runtal has a wide selection of verticals. I've seen some with hooks to hang jackets and hats on.

    You can also custom build a radiant wall, should be able to get 25- 30 but per square foot from a radiant wall. Just use some ThermoFin and sheetrock or wood over them.

    https://www.dropbox.com/s/idb7te766wzm5s2/Screenshot 2018-10-10 17.45.14.png?dl=0
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • delta T
    delta T Member Posts: 884
    edited October 2018
    I second Runtal:


    5 tube 14.3" width you will need about a 6' height assuming 180 degree average temperature. Depends on the operating temp of your system to size properly.
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,050
    edited October 2018
    I like Runtal as well and I especially like their towel warmers in kitchens and bathrooms.

    They have a TW21, 61" high x 16" wide that has an output of 3520 BTU's at 180°F water temperature.


    With all the appliances in the kitchen generating heat, I don't think you would miss the 500 BTU shortfall.
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
    delta T
  • kcopp
    kcopp Member Posts: 4,443
    Biasi/ Purmo makes a 16 wide x 36 high panel radiator.
    4240 btu.
    A lot less $$$ than Runtal
  • Zman
    Zman Member Posts: 7,573
    kcopp said:

    Biasi/ Purmo makes a 16 wide x 36 high panel radiator.
    4240 btu.
    A lot less $$$ than Runtal

    True, They stick out quite a ways though.
    Embrace your inner artist and build one like @Hotrod using copper tubing and cool metal artifacts :D
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
    delta TKLaughkcoppCanucker