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<body class='hmmessage'><div dir='ltr'>Richard: Barbara made a mistake in her email cited below; its 40 watt-hr per day from a tank-type water heater; negligible from a tankless heater. <div> By the way, after 20 years of service my tankless water heater (Acutemp C150 by Keltec) wore out because our tap water is so corrosive it destroyed the all-copper, 3-tube heat exchanger assembly housing the 5-kW element. <div><ul><li><span style="font-size: 12pt;">Our tap water has over 387 pCi/L of Radon-222 & lots of water-radiolysis, as you can infer from attached Nucleonica analysis.</span></li></ul><div><br></div><div>Last Thanksgiving they the heat exchanger onto the control board and blew out the control system. In a panic, I called the manufacturer for a replacement because we used it for both space & water heating. </div><div> But the price shot up from around $500 in 1996 to $1700 in 2016. Since they still used a copper heat exchanger, I googled "tankless heaters with stainless heat exchangers" and discovered Home Depot was selling 11 kW ECO-11 tankless heaters by ECO Smart for $209.99, free S/H. So I bought one. </div><div> Worked great all winter and we save energy because it's maximum was 140F, not 180 from the Accutemp.</div><div>Carmine</div><div>P.S to Nick: Glad to see you are still trying to teach arithmetic to Reuben. <br><br><div><hr id="stopSpelling">Date: Sat, 16 Apr 2016 14:36:26 -0400<br>From: richard6@gmail.com<br>To: greenbuilding@lists.bioenergylists.org<br>Subject: Re: [Greenbuilding] Greenbuilding Digest, Vol 68, Issue 3<br><br><div dir="ltr"><a href="http://waterheatertimer.org/" target="_blank">http://waterheatertimer.org/</a><br></div><div class="ecxgmail_extra"><br><div class="ecxgmail_quote">On Wed, Apr 6, 2016 at 3:32 PM, barbara deane-gillett <span dir="ltr"><<a href="mailto:deaneg@hotmail.com" target="_blank">deaneg@hotmail.com</a>></span> wrote:<br><blockquote class="ecxgmail_quote" style="border-left:1px #ccc solid;padding-left:1ex;">typical loss from an electric water heater is 1 kwh per day or 40 watts not 4 watts<br>
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On Apr 6, 2016, at 12:01 PM, <a href="mailto:greenbuilding-request@lists.bioenergylists.org">greenbuilding-request@lists.bioenergylists.org</a> wrote:<br>
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> Date: Tue, 05 Apr 2016 14:49:22 -0400<br>
> From: nick_pine <<a href="mailto:nick_pine@verizon.net">nick_pine@verizon.net</a>><br>
> To: <a href="mailto:greenbuilding@lists.bioenergylists.org">greenbuilding@lists.bioenergylists.org</a><br>
> Subject: [Greenbuilding] Water heater timer<br>
> Message-ID: <<a href="mailto:t0jv6ljfh0rn485nmbk694n2.1459881588591@email.android.com">t0jv6ljfh0rn485nmbk694n2.1459881588591@email.android.com</a>><br>
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> Kill-a-watt's come in 240V.<br>
> If the timer uses more than 4 watts, it likely uses more electrical energy than the heat energy it saves.<br>
> Nick?<br>
> Sent from my Verizon Wireless 4G LTE smartphone<br>
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> -------- Original message --------<br>
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> Date: 04/05/2016 2:00 PM (GMT-05:00)<br>
> To: <a href="mailto:greenbuilding@lists.bioenergylists.org">greenbuilding@lists.bioenergylists.org</a><br>
> Subject: Greenbuilding Digest, Vol 68, Issue 2<br>
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> Date: Mon, 4 Apr 2016 18:30:31 -0700<br>
> From: Antonioli Dan <<a href="mailto:solardan26@gmail.com">solardan26@gmail.com</a>> wrote<br>
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> "I?m installing a solar thermal (?assisted?) electric hot water heater and will be including a digital timer and watt meter...<br>
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