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    cliffr17's Avatar
    cliffr17 Posts: 4, Reputation: 1
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    #1

    Feb 17, 2008, 11:45 AM
    More efficient ?
    Hello my plumbing consists of a tankless water heater for 2 zones hydronic, radiant floor heat,and drinking water.I need a heat exchanger for my domestic but I don't know which is more efficient a flat plate or an indirect fired storage tank.there are 3.5 baths,4 people.thanks for the help
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Feb 17, 2008, 02:44 PM
    Sorry Cliff but I'm confuse. A tankless water heater heats domestic potable hot water. Are you using a tankless water heater for something else or is it actaully a boiler?
    cliffr17's Avatar
    cliffr17 Posts: 4, Reputation: 1
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    #3

    Feb 19, 2008, 04:58 PM
    Yes I'm using it as a my boiler
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
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    #4

    Feb 19, 2008, 07:25 PM
    So are you looping the hot water back to the tankless heater once its made its run through your heating zones? Tankless water heaters are vert efficient compared to a normal hot water heater because they do not heat the water to 120 degrees all day long even if you are not using water. I don't have the numbers to crunch but I do not believe they are going to be super efficient for what you have in mind.
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