If you have a high electric bill and bought a mass merchant hot tub, like costco, lowes, walmart or any "box store" or just made the mistake of not buying an energy efficient spa like a  Haven Spa, you can help the issue by using some of our insulation.  This comes in sheets and is cut to fit on the inside wall of your tub. Dont Forget to add a thermal blanket also

Adding this insulation can save up to 60% on your electric in winter.