A floating bubble liner that sits on the water of a hot tub or spa to slow heat loss and keep debris out. The bubble film traps a layer of warmth at the surface, so the heater runs less between soaks. It is UV-stabilized for outdoor use and light enough to lift off by hand. Compared with a hard insulated cover, it costs far less and is easier to handle, but it does not seal the tub or support weight, and it must be trimmed to fit. Owners rate it well for heat retention and easy handling.
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Owners with 128 ratings averaging 4.7 out of 5 report the liner holds heat noticeably better and is simple to handle. Most praise the fit once trimmed and the debris protection. A few say it degrades faster than expected or fits loosely in irregular tubs.
This floating bubble liner sits on top of the water in a hot tub, spa or jacuzzi. Its bubble construction traps heat, which helps the water stay warm longer. That reduces heat loss and the need to reheat. The listing states energy efficiency of up to 15%.
The liner is made from waterproof PE material that is UV-resistant and built for outdoor conditions. It also keeps debris out of the tub and reduces foam and scum.
It is lightweight, so it is easy to place and remove. Lay it on the water between uses.