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Can you program it for less filtration?
i was thinking about getting some of that rigid insulation and attaching it to the backside of the panels. hopefully that will help. or even some of the fiberglass insulation that comes inclosed in a plastic bag.
in your HO what should it be set at?
I'd also look for air gaps in the skirting and seal them up.
Be careful adding insulation to your tub. Earlier this year I had the pleasure of meeting a gentleman that bought a house with a LA Spa on the deck. The previous owners told him that the electric bills were outrageous so they added some insulation. Here it is a couple months after they take possesion of the house, they look outside, lo and behold the tub and part of the deck are on fire!!! Fortunately they were able to put the fire out!Turns out that the "added" insulation was slowly dried then ignited by the tubs light. OopsAll is well that ends well. They now have an Optima that is bigger than their old tub and is costing them about $20 less per month in electricity.(Who knows what the difference would be without the "added" insulation!)Again BE CAREFUL!!