Energy Saving Hot Tub


Old 08-02-04, 06:16 AM
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Wink Energy Saving Hot Tub

For a hot tub that is used once a week, is it more energy saving efficient to turn the temperature down low, or leave it at the temperature at which it is to be used.
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Old 08-02-04, 06:29 AM
Join Date: Sep 2000
Location: United States
Posts: 18,497
The laws of thermodynamics are clear. The rate of heat transfer increases as the temperature difference increases. This means that you lose more energy from a hot tub than a cool one. So by all means, don't just turn it down, but turn it off.

This principle also answers the question about whether or not to turn off the air conditioner, furnace, and water heater when you're gone.

This principle is based, however, only on energy savings (which is all you asked about). There may be other reasons to leave your hot tub, air conditioner, furnace, or water heater on when you're not there. Other reasons include convenience, comfort level, and how the equipment operates (e.g., potential icing of the coils). But considering energy savings alone, there can be no debate.

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