This further insulates your tub and protects your cover from heat and moisture. To prevent damage to your cover, you can add a floating thermal blanket to your spa. An energy-efficient hot tub cover should have an R-value higher than 12. R-value measures a cover’s thermal resistance. Even covers with high R-values can begin to take on water if the outer cover breaks down or gets damaged from prolonged heat, chemical and moisture exposure. While R-value is important, the insulation inside the cover may begin to take on water if the outer layer rips or becomes thinner, rendering the insulation ineffective. An average cover will have an R-value of 12, so look for values higher than that. As with insulation, a hot tub cover’s R-value indicates how well the insulating material works. Investing in a high-quality cover can reduce your hot tub’s energy consumption by an additional 10%. Try to skip fiberglass insulation since it tends to become less effective when exposed to moisture. Be sure to ask what materials line the tub. The higher the R-value, the better the insulation. “To determine if a hot tub has sufficient insulation, inquire about the R-value (thermal resistance) of the insulation used,” Rudy suggested. Many “plug-and-play” hot tub models have low upfront costs, but they cost a lot to run since they typically have inefficient heaters. How much heat escapes your tub will greatly affect your energy consumption, but good insulation can raise the price of the tub. He said savings can range “from a few hundred to over a thousand dollars,” depending on local energy prices and how often you use the tub.Ī quality energy-efficient hot tub should have these three key features: “Energy-efficient hot tubs can save you significant money over time by reducing your monthly energy bills,” Boyd Rudy, a team leader and associate broker for the real estate group MiReloTeam, told us. How to choose an energy-efficient hot tub
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