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  • Make a Cheap Solar Batch Water Heater (Solar Preheater)

    No I don't have any more information as to actual savings numbers pre and post water preheater for a couple of reasons: 1. I have been out of the country for work now for about 1.5 years. and the batch preheat system was bypassed via the pictured ball valves to make sure my girl at home didn't have to mess with it in my absence. (turn it off in winter)2. Even before I left, there were other factors involved in my power bill and impacting the measurement of savings. These include an electric car and a plug in hybrid as well as a 5kw solar array on my roof.My power bill, even with the electric cars charging every day was not too high thanks to the solar array and heat pump hot water heater already there. I can say that I saw water temperatures from the batch tank higher than the water...

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    No I don't have any more information as to actual savings numbers pre and post water preheater for a couple of reasons: 1. I have been out of the country for work now for about 1.5 years. and the batch preheat system was bypassed via the pictured ball valves to make sure my girl at home didn't have to mess with it in my absence. (turn it off in winter)2. Even before I left, there were other factors involved in my power bill and impacting the measurement of savings. These include an electric car and a plug in hybrid as well as a 5kw solar array on my roof.My power bill, even with the electric cars charging every day was not too high thanks to the solar array and heat pump hot water heater already there. I can say that I saw water temperatures from the batch tank higher than the water coming out of my tap, so I was saving money for sure but who knows how much. The batch system with free tank didn't cost me much money, so it surely will pay for itself once I return back to American and put it back to work.I do plan to run this type of system in future living situations and will be placing the water tank in a less than vertical orientation in future builds based on what I learned with this system.

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  • Make a Cheap Solar Batch Water Heater (Solar Preheater)

    Thanks for the comments. As suggested, I will cover the outdoor exposed Pex piping. Thank you for the recommendations there.

    Thanks for the suggestion. I agree that this could be an option, but I think that this would be a better option for the enclosed type batch systems with a box and insulation. I think my system is not a good candidate for this because I think that my water temps are going to be less than my home hot water heater's 119 degrees most of the time due to lack of insulation, the vertical orientation of the tank and lack of reflective boost that the more complicated batch systems typically consist of. Feel free to make one how you have suggest and post about it so that I can see it in action and maybe change my mind however.

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