Heat pump for Hot Water

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Heat pump for Hot Water

Postby tony177 » Fri Sep 25, 2009 4:01 pm

Hi all - Tony here. I am wondering where to start, if I want to instal one of those heat pumps for my hot water. There is no more room on my roof for any more panels so this may be the way to go. Also is it true that I can save 75% on my hot water bill with these things? Do they have an old-style tank with them or is there continuous and unlimited hot water? :(
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Re: Heat pump for Hot Water

Postby MichaelB » Fri Sep 25, 2009 8:15 pm

Hi Tony,

Welcome to the forums :)

We have an article on the Energy Matters site regarding heat pumps you may find useful:

http://www.energymatters.com.au/renewab ... -pumps.php
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Re: Heat pump for Hot Water

Postby grahamn » Tue Sep 29, 2009 8:36 pm

Hi Tony,
Hopefully your heat pump questions are answered in this "Report"
http://www.ata.org.au/wp-content/projec ... report.pdf

Certainly check out ground source refrigerant filled systems rather than air source.

Don't forget to share your findings.
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Re: Heat pump for Hot Water

Postby SR76 » Tue Sep 29, 2009 9:41 pm

Definitely an "old-style" tank rather than continuous and unlimited hot water, though quite a bit more sophisticated.

Yes indeed they can save substantial energy over an electric heater - 75% might be correct depending on where you are and how much you use but it's not good to use a single figure like that without knowing the background.

Air-sourced heat pumps will work better in warm climates than cold as they use the heat in the surrounding air. Haven't seen many ground-source heat pumps in Aust but these are becoming popular elsewhere.

Certainly if there's no room left on your roof then this might be your next best option (in some circumstances better, but depends on so many things).

Cheers,

-SR
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Re: Heat pump for Hot Water

Postby Sandivee » Tue Sep 29, 2009 10:45 pm

wind-solar-misc/topic190.html

The above link is a post regarding this matter - heat pumps vs. (other) solar hot water

You might understand the situation a bit better from there.
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http://www.LightingMatters.com.au
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