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Heat for 3rd floor addition

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John_4-2
John_4-2 Member Posts: 1
in THE MAIN WALL
I'm looking for advice. I'm adding a 3rd floor large bedroom with a small bath. ( about 26' x 26' ) I have a gas heat , forced hot water system with radiators on the first 2 floors. What is the best and cost effective way to heat this space? Someone told me to add baseboard forced hot water, but what about radiant floor heating?  Thanks

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  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,002
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    Third Floor

    Radiant heating would be the most comfortable.  If the third floor is where you will be spending a lot of time, i.e. your bedroom, bathroom, etc., choose radiant.  If it's a guest bedroom or some other rooms that don't get used often, go with radiators or baseboard.



    Radiant will be the most expensive to install followed by radiators and then baseboard.
    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
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