Hot tub cover loose

All spas and hot tubs have one thing in common- they heat water. The objective is to conserve as much of this heat as possible. Here's how:

Start With Your Spa Cover

Heat rises- that's why we insulate the attics in our homes. In fact, although walls are also insulated, up to 85% of heat loss is through the roof. The same principle applies to your spa. Many modern spas have well-insulated shells. This helps a lot, but much heat loss will still be through the "roof" ...your spa cover!

If your cover has deteriorated, heat leaks will occur at the hinge-fold and also on the spa shell rim due to improper seating of the cover edges. More importantly, if your old cover has become very heavy, this indicates water-logging of the foam-core insulation.

A waterlogged cover will have almost no R-value, wasting your heating dollars. A high quality DuraTherm replacement spa cover will not only save energy, it will also last longer, be more resistant to water absorption, and improve the beauty of your spa. If your cover is in good condition, make sure the tie straps are snug and latched when the spa is not in use. This will reduce heat leakage.

Heat radiation is the transmission of invisible infrared rays, a factor where traditional spa covers lose energy. All matter (including the warm water in hot tubs) radiates infrared rays outward, losing heat, unless these rays are reflected back. For example, foil-faced home insulation reflects about 95% of heat rays back into the house, helping to conserve energy. Hot water energy loss from radiation has been largely ignored by spa cover manufacturers, until now. DuraTherm has addressed this loss with our Energy Reflex upgrade. Radiant heat, which would otherwise escape and be wasted, is reflected back down into the spa water.