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Doriley,Many folks have added their own insulation, like Pink Owens Corning House Insualtion, which can be purchased from Home Depot. It would be easy to remove your cabinet panels, and hand layer the Owens Corning around your spas shell and plumbing. Do not surround the pump or equipment, as those components do need to breathe and there will be some benefit from the motors heat. Anything will help.
Thanks for all the advise. The insulation inefficiency is consistent with some other information I obtained. Vinny from NJ. I think you may have a similar problem with your spa. I'd consider doing the same thing I may have to do.
Hey Vinny,With PSEG in South Jersey, we are paying KWh charges of $0.053833333, probably about what you are paying in the Trenton area. Which is lower than .08988 that doriley is paying for usage. You were using the spa almost daily, so that will increase cost, along with being exposed to the cold air, when the cover is off. But, the $80. dollars seems a bit high for you. Vinny, do you have the Grand Cayman or Bahama? I am waiting for my 2006 Island Series to arrive, they have been retooled for the new year. I should have them in a couple weeks. They really look great. I'll pass along a photo. Dave.