General > Beating a dead horse
Horse power
hottubdan:
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In a test of thermal efficiency of eight hot tubs, the Alberta Research Council found that at -12C, the most efficient model tested used 266W/m3*h while the least efficient used 968W/m3*h or over three and a half times as much energy. So where a "silly" energy-efficient hot tub might cost $30 a month, a less-efficient unit might cost over $100. That difference is considerably more than "a few cents" and the facts suggest that there is more involved than "a stupid sales gimmick".
There are actually some physics and engineering involved.
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Tom,
Is that Canadien $ or US? ;D
Did they test at higher temps? Josh in Seattle area and I in northern CA don't get -12C to often. :)
Repeat_Offender:
Isn't the internet wonderful? With Google and cut/paste everyone's an expert.
Tom, is that comparing a high end modern spa with one of those wooden uninsulated ones?
Meaningless data on it's own.
Josh:
Wasn't there another response before this one? It seems to have disappeared.
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Some of us come here to stay in tune with what is out there, to read about what others see, to help others with our experience, etc. That kind of comment is inaccurate and ridiculous.
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Some of you may very well come here for that reason. It seems that others come here to trash competing brands and make ridiculous claims about the quality of the brands they sell. It's tough to tell which people are helpful and which are full of it....but believe me I'm trying to give everyone the benefit of the doubt.
So....if you're in a helpful mood, perhaps you could let me know which brands exactly are considered the "Top brands" that you consider to be "energy efficient". Also...maybe you could give me a list of the ones that aren't. It might be a useful reference for people.
hottubdan:
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So....if you're in a helpful mood, perhaps you could let me know which brands exactly are considered the "Top brands" that you consider to be "energy efficient". Also...maybe you could give me a list of the ones that aren't. It might be a useful reference for people.
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Well Josh,
Hot Spring and Arctic are the [glow]only[/glow] brands that I know of that have published 3rd party testing. For what it is worth:
http://www.hotspring.com/Spa_Showroom_Hot_Tub/energy_testing.html
http://www.arcticspas.com/index.php/en/custom_content/12/12/
Of course, studies are open to interpretation. Arctic studies use some criteria of temperatures that are outside the norm for millions of potential spa owners. Hot Spring study refers to a specific use pattern that is probably close to real use for most people and refers to several ambient temperatures.
If there are and other 3rd party tests out there I would like to see them. Not interested in any self reporting tests.
Josh:
--- Quote ---If there are and other 3rd party tests out there I would like to see them. Not interested in any self reporting tests.
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Yeah...that data isn't really helpful considering they're only publishing the specs on their own models. I'm more curious about comparisons against other leading (and not-so leading) manufacturers. After all...the claim I've heard repeated over and over in this thread is that "the top brands are energy efficient". I'm curious which brands are on that list...and which aren't (and where people are sourcing their data from).
I wonder if a truly independent 3rd party has ever done a study like this....and done research on more than just one tub?
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