[Greenbuilding] Nyle heat pump water heater update

[Reuben Deumling]

Although I despise using electricity to heat anything, I have to admit that
1.9kWh/day for electrically heated water isn't bad. I wonder if others here
could perhaps weigh in on what their electric water heaters consume per day
to supply domestic hot water? I used to think 10 kWh/day was a good rule of
thumb for an electric tank water heater, but have since learned from
friends that they can also use much less than that.


On Thu, May 23, 2013 at 4:00 PM, Paul Eldridge <
paul.eldridge at ns.sympatico.ca> wrote:

> It has been two hundred and twenty days since we installed our Nyle RO
> heat pump water heater, and I thought I'd provide list members with a quick
> update.  The little guy has supplied all of the DHW needs for our two
> person household and, with that, consumed 412.3 kWh or an average of 1.87
> kWh/day.  That's down from an average of 3.96 kWh/day for this same period
> last year when we heated with electric resistance.
>
>
> We're relatively frugal in our hot water use, so the simple payback for us
> will be a little longer than most households, i.e., about ten years at
> current utility rates.  Even so, I'm extremely pleased with its
> performance.  We're now approaching that time of the year when we run our
> dehumidifier virtually non-stop to keep humidity levels in check, so to the
> extent that this HPWH reduces our dehumidifier run time, it will supply us
> with all the"free" hot water that we can possibly use.
>
> BTW, according to the City of Halifax's Solar City website, the typical
> installed cost for a solar DHW system in these parts runs between $6,400.00
> and $8,000.00 after all applicable rebates (source:
> www.halifax.ca/solarcity/).  And in speaking with one of their
> representatives, I'm told that I could expect such a system to offset
> perhaps one-half our annual needs. The Nyle, as mentioned, satisfies 100
> per cent of our requirements at an installed cost of just $1,100.00.
>  Moreover, it would likely consume less electricity through the course of
> the year than what might be required to operate the circulation pump,
> control system and back-up electric element of a residential solar system,
> had we chosen to go this alternate route.  This is not meant to be knock
> against solar; rather, it's to point out that there are other options that
> are equally worthy of consideration.
>
> Cheers,
> Paul
>
> Sent via my BlackBerry Q10 / Ce message fut envoyé avec mon BlackBerry Q10.
>
>
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