Demand heater for SHW backup [RE-wrenches]

[Ian Woofenden, Home Power]

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Hi Wrenches,

What do you recommend in on-demand water heaters for solar domestic 
hot water systems? I'm looking for specific brands and models that 
you have used and are happy with.

Propane and electricity are both available. Which is better/more 
economical? I'm partial to the idea of electric because it could at 
least potentially be powered renewably, either on-site or via "green 
power".

A modest or non-existent idle draw would be nice, since there will be 
a PV system, and it would be preferable not to use a significant 
amount of its production maintaining the heater's electronics.

Thanks,

Ian

-- 

Ian Woofenden <ian.woofenden at homepower.com>, Senior Editor
Home Power magazine; Subscriptions: $24.95 per year, PO Box 520, 
Ashland, OR 97520 USA
800-707-6585 (US), 541-512-0220, or download free sample issue at 
<http://www.homepower.com>


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