[Greenbuilding] Water heater blankets?!

[conservation architect]

I built a finished wood box with 6" clearance to framing and filled with 
3"iso foam lining inside the box and infilled with cellulose.  I did leave a 
tunnel with rigid foam plug to access the controls and element removal 
location.  I use only a 20 gal tank located between sink and tub.  20 
gallons allows me to take a decadent bath.  By the time I am done, the water 
has warmed to heat the next bath.  I get instant hot water on both taps.  I 
think it works great.  It is a homemade deal.

Eli

-----Original Message----- 
From: Topher
Sent: Wednesday, December 03, 2014 3:32 PM
To: Green Building
Subject: Re: [Greenbuilding] Water heater blankets?!

On 12/3/2014 2:09 PM, Reuben Deumling wrote:
> ...having called every plumbing supply place I know of I keep striking 
> out.
> I get every conceivable answer as to why they don't stock/can't sell me a
> water heater blanket. What is up with this?
>
> My reason for wanting one is that if you spec a 120V 20 gal electric tank
> they only come with 1" of insulation, and even if they had employed NASA's
> super duper high-R-value foam which I am quite certain they did not, since
> bumping down from the 2" of foam they spec on the equivalent 240V models 
> is
> surely a cost saving measure pure and simply, I would very much like to
> improve the heat retention capabilities of this little fellow.
>
> Any suggestions?

A dry cleaning bag, and a can of spray foam?

Also, be sure to leave access to the temperature controls.


Thank You Kindly,

Topher


-- 
Topher Belknap
Green Fret Consulting
Kermit didn't know the half of it...
http://www.GreenFret.com/
topher at greenfret.com

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