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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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General: Electric Underfloor Heating

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    • CommentAuthorCaroline
    • CommentTimeAug 9th 2007
     
    Hello
    We are currently extending our kitchen to be about 7mx5m of floor space. We are planning to have a wood burning Rayburn (cooking only) at one end, and are thinking that that won't give enough heat for the whole space (and for the days that we can't be bothered to light it). So......does anyone know much about electric underfloor heating pads, how efficient they are etc. The floor is new concrete and we are putting slate tiles to absorb sun's warmth (there are about 6m of floor to ceiling windows) during sunnry days. We have PV (about 5kW), and our other space heating is wood burners adn storage heaters.
    Any thoughts or recommendations much appreciated.
    Thanks
    • CommentAuthortony
    • CommentTimeAug 9th 2007
     
    How much insulation are you putting in? What will your heat losses be? How much heat will those big windows loose?

    Why not insulate it so that you don't need any heating? Its is easy while you are building it.

    Electric underfloor heating is 100% efficient, each kW of electricity gives you a kW of heat. The idea is not to need vary many and those you do use try to make them last as long as possible.

    Why not put in a wet underfloor system then you can use whatever fuel you like to make it hot, including electricity

    A heat pump will give you 3.5 to 4 kW of heat for each kW of electricity. Interested in one of them?

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