If it's time to replace the cover, be sure to buy a well-crafted one. Over the life of the cover, the cost of the upgrade could be returned several times. Think of a good cover replacement as an investment, not an expense. Most hot tubs have emersion-type heating elements which come in contact with the spa water. Unbalanced water can lead to scale formation on the heater element.
Scale can cause the heater to be less efficient in transfer of heat from it to the water.
Spa System Flush can help remove and prevent scale buildup. For energy savings, a floating thermal blanket is a small investment with a high return. Reduces heat loss and helps keep moisture buildup on the inside of your cover to a minimum. We recommend the closed-cell foam type. They insulate better and last longer than the flimsy bubble blankets dealers often provide with new spas.