 | Instantaneous water heaters |
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Question: I take care of some property that has a small cabin on it that has a Myson instantaneous water heater. As far as I know it works really well with its limited use. The problem is I am building my own 3 bd/2ba home and I was wondering how an instantaneous water heater would work for everyday use including showers, washing and filling up a jacuzzi tub in the master bath (just my wife and myself- no kids). I would assume that it would work fine, however, my plumbing contractor who seems to be alternative energy savy, says that the instantaneous isn't all it is cracked up to be. The things that are important to me is eventually as I can afford it, I could add a solar water pre-heat set up. Anyone have any experience with instantaneous water heaters used on a day to day basis?
Answer: What is the main reason for wanting instantaneous heat? If you are looking to correct a long wait for hot water because of a long run from a conventional water heater you might want to do what I did. Add a return line (½") from the farthest point in the hot water lines back to the hot water heater. Some systems will work with only a return line and a flapper type check valve through convection. In my system, I also added a circulation pump that is on a timer. This pump causes water to flow from the hot water line at the farthest point to flow back to the cold side of the hot water tank. After installing this system we have instant hot water anywhere in our house. I insulated all the pipes too.
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