WaveSpa Round Thermal Efficient Protective Inflatable Cover

An inflated cover creates a layer of trapped air between the water surface and the outside environment. Air is a good insulator, so this air pocket slows the rate at which heat moves from the warm water through to the cooler surrounding air. A flat, non-inflated cover sits directly on the water with no air gap, making it considerably less effective at slowing heat loss overnight or between sessions.

When a hot tub is left uncovered, water evaporates from the surface continuously. As water evaporates, it carries sanitiser with it, which lowers chlorine levels faster and requires more frequent dosing to keep the water safe. A well-fitted cover reduces evaporation significantly, meaning your chlorine and pH chemicals last longer and water testing shows more stable readings between doses.

Yes. The grooves act as channels that direct rainwater toward the edges of the cover rather than letting it collect in the centre. A flat inflatable cover without this design tends to develop a bowl-shaped depression over time as water weight pushes the centre down, which eventually causes sagging and can put stress on the cover material. The grooved profile maintains a consistent shape across the surface regardless of rainfall.

Inflation and deflation through the 25mm valve is quick enough that it does not add any meaningful inconvenience to a typical spa session. Most users inflate the cover in under two minutes using a standard pump and deflate it in roughly the same time. The cover is lightweight enough to fold and store nearby rather than leaving it permanently inflated when not in use.

The 4-person round cover at 140 x 140cm is sized to fit WaveSpa 4-person round models. Since dimensions can vary slightly depending on how fully the cover is inflated, it is worth checking your specific spa model dimensions before ordering. If you are unsure which size fits your exact model, the Peak Health team can confirm compatibility before purchase.

The cover is designed and sized around WaveSpa round spa dimensions, but it can physically sit on top of any round portable spa with a similar footprint. The 4-person at 140cm and the 6-person at 166cm dimensions cover the most common round portable spa sizes in the UK market, so it may well fit other brands with comparable measurements. That said, a precise fit on non-WaveSpa models cannot be guaranteed.