Hi Jay,
Your government at work. See
http://www.energysavers.gov/your_home/water_heating/index.cfm/mytopic=13000
for an explanation of energy factor (their efficiency rating) which
combines recovery efficiency, standby losses, and cycling losses.
You might want to consider how many moving parts there are in the heat
pump water heater and who will service the refrigeration system (Here in
River City an EPA blessed individual (practically an HVAC tech) is
required).
There are optional kits now sold which essentially duct the rejected air
to a different space during the season when that air would not be
beneficial.
Bill Loesch
Solar 1 - Saint Louis Solar
314 631 1094
On 14-Jul-12 6:33 PM, jay peltz wrote:
Hi All,
I've got a client who is thinking of getting a heat pump hot water heater.
Wanted me to confirm that it would save him kwh per year over a standard tank
unit.
Yes it will, or so all the numbers say for his area etc.
But I cannot figure out ( or find out) how to compare the energy factor 2.2 in
full heat pump mode vs the .91 in electric element mode?
Anybody know how to do this?
thanks,
jay
peltz power
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