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Compare the energy savings of different covers

With a few known quantities, you can determine the efficiency of your spa cover compared to an Arctic Spa Cover". Following the directions below (only slightly easier that doing your federal taxes), can yield some interesting, and cost saving results.

The formula for this calculation look like the following;

Rvalue1.gif (1319 bytes)

1. The temperature of your spa water: W=

2. The average temperature of your outside air: A=

3. The surface area of your spa (in square inches): S=

4. The R-value of your current cover: R=

Enter your above figures into the equation below. IMPORTANT, replace the letters below with the appropriate numbers above. DO NOT CHANGE ANY OTHER FORMATTING CHARACTERS!

BTU heat loss over 6 days: