1. Tubs are 400 gallons
2. Tubs are not in direct sunlight
3. Tubs do not have a cover so heat gain is omitted from calculation
4. The tubs are in direct contact with the ground for their full foot print
5. There is not a person or other heat load in the tub
6. The air surrounding the tubs is still
Based on how cold you want your water to be, how hot it is outside, and where your tub is placed - we can determine how many pounds of ice your current tub requires per hour. This formula was developed by a P.E. certified mechanical engineer.
Not sure how much your ice costs you? Click the symbol for help.
Now we can determine how much it costs, per hour, to keep your current tub cold by taking the number of pounds of ice it requires each hour and multiplying it by your cost to buy or make 1 pound of ice.
Next, we need to know how many hours per year you typically utilize your tub. For example: if Mike uses his tub 9 weeks a year for about 15 hours during each of those weeks, we can calculate that Mike uses his tub 135 hours each year.
(9 weeks x 15 hours/wk = 135 total hours)
We now know how much it costs to keep your tub cold each year by taking the number of hours you use your tub annually and multiplying it by the cost, per hour, to keep the tub cold at your desired temperature. Boom.
Split the difference in cost between your current tub and the BAY Tub, then also take out the upfront cost of the our tub ($1,200), and what you're left with is how much you'd save after just one year if you made the switch. How ya like them apples?