[Greenbuilding] low flow shower heads

Richard Garbary richard6 at gmail.com
Sun May 15 15:51:20 PDT 2011


Carmine:

With DHR , what capacity electric tankless would satisfy this kind of draw.
I guess a tandem setup. Anyway, nuts to do it without DHR. And with those
drain flows, a manifold DHR setup. Carmine, he has definitely come to the
right guy to deal with the challenge. This will be a feather in your cap.

Take care,

Richard


=========================================================================================================
On Sun, May 15, 2011 at 4:59 PM, Carmine Vasile <gfx-ch at msn.com> wrote:

>  Richard:  Your solution will not satisfy his wife because she made him
> buy a multi-head shower withsix 6 2.5 gpm showerheads. I received another
> inquiry from a homeowner with two back-to-back units that would draw 30 gpm.
> His plumber suggested a commercial boiler costing lots of money. Carmine
>
> ------------------------------
> Date: Sun, 15 May 2011 12:24:15 -0400
>
> Subject: Re: [Greenbuilding] low flow shower heads
> From: richard6 at gmail.com
> To: gfx-ch at msn.com
> CC: greenbuilding at lists.bioenergylists.org; steve at tjiang.org;
> 9watts at gmail.com; erin at trmiles.com; sacie.lambertson at gmail.com
>
>
> To start with:
>
> = Keep the 40 gallon water heater. Cost: FREE
> = Put in a 2.5 gal/ 9 liter shower head with flow control/shutoff. Cost:
> ~$10 - $50. This will save him 6x his current energy cost
> = Add an insulation blanket. Cost: ~$20 - $30
> = Put an insulation pad underneath the water heater. Cost: ~$10
> = Insulate any exposed water pipes. Cost: ~$10 - $25
> = Install a 50%-DHR system. Cost: ~$700 - $1,000. In combination with the
> 2.5 gal. shower head this will save him 12x his current energy cost!
>
> He'll never run out of hot water with this setup unless he as some other
> bizarre hot water requirements. So tankless is NOT necessary. Heat loss
> through a tank setup is minimal if properly insulated. He will not have to
> upgrade his service $$$$$.
>
> I would definitely NOT recommend a tankless electric/gas water heater.
>
> Regards,
>
> Richard
>
>
>
> =========================================================================================
> On Sat, May 14, 2011 at 5:10 PM, Carmine Vasile <gfx-ch at msn.com> wrote:
>
> Steve, Reuben & Richard: Last week I received a call from the owner of a
> mult-head shower drawing 15 gpm of 105F water. He lives in North Carolina
> and his 40 gallon electric tank-type water heater ran out of hot water in a
> few minutes. I gave him my advice, install a tankless water heater with a
> 50%-DHR system to halve the load by recycling heat wasted down-the-drain.
> Solar is not an option.
>    What would your advice have been?
> Carmine
>
> Date: Fri, 13 May 2011 13:40:29 -0700
> From: steve at tjiang.org
> To: greenbuilding at lists.bioenergylists.org
> Subject: Re: [Greenbuilding] low flow shower heads
>
>
> Terminology:A navy shower = turn on to wet skin; turn off to soap; turn on
> to rinse.A hollywood shower = turn on full blast; start singing; soap; turn
> off a the end.
>
> A thermostatic value + volume control is  way better than a navy shower
> button because you can adjust the volume down to a level just to keep you
> warm while soaping.  This may convince more people to actually use less
> water while showering than the pure "Navy shower" approach.   The downside
> is thermostatic valves and volume controls setups are expensive.
> <snipped>
>
>
>
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