Certified Pool Operator Practice Test

The number of jets is the essential factor to consider when calculating heating costs for spas. This is because the more jets there are, the more energy is needed to heat the water. Therefore, the number of jets is directly related to the amount of energy and ultimately the cost of heating the spa. B The desired water temperature is not as essential to consider because most spas have a thermostat that can be adjusted to a desired temperature, but the number of jets cannot be changed. C: The spa cover material may have a small impact on heating costs, but it is not the most important factor. D: The number of users may have some impact, but it is not as significant as the number of jets. Overall, when it comes to heating costs for spas, the number of jets is the most important factor to consider.