Hot Tub and Energy Savings?????

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  #1  
Old 03-01-08, 01:36 PM
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Hot Tub and Energy Savings?????

Hi.

Here is a question that I have gotten multi-opinions on, but what might the "truth" be?

We have a community hot tub that is a 10 X 10 square. There is an insulated blanket on the surface of the water.
We live in a central Florida community, which while not as cold as the mid-west or the north east, is a lot cooler than the constant 102 degree temp. of the hot tub.

Question:
Do we save money and energy (gas heated) if we shut the tub down at dark and then fire it up again at 9 a m the next day, or we save money and energy if we allow it to stay at its constant temp. 24/7?

Does anyone really really know the answer....and WHY?

Thanks

Crybaby
 
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  #2  
Old 03-01-08, 02:01 PM
Join Date: Mar 2005
Location: USA
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Hot Tub and Energy Savings?????

Above ground or in ground?

If above ground, insulated or not?

Iknow you cannot save money cuting of a pool with a cover at night and your 10x10 is a prety good sized hot tub, so I would GUESS it would not be worth the inconvenience, especially if it is in ground or insulated on the sides.
 
  #3  
Old 03-01-08, 04:28 PM
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Yes it would save you money. Newton's Law of Cooling (physics) states that the greater the temperature difference, the faster the exchange of heat. Therefore, as your spa cools, it will lose less heat the cooler it gets. How much you save by turning it off for short periods of time though, may be quite negligible.
 
  #4  
Old 03-02-08, 06:20 AM
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Thanks, but a spa follow-up..

Originally Posted by Dr. Spa View Post
Yes it would save you money. Newton's Law of Cooling (physics) states that the greater the temperature difference, the faster the exchange of heat. Therefore, as your spa cools, it will lose less heat the cooler it gets. How much you save by turning it off for short periods of time though, may be quite negligible.

The spa is inground, and the spa would be shut for for about 15 hours...is that long or short for a nice degree of gas heat savings?

Crybaby
 
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