This four teir insulation system results in improved running costs and reduced noise levels from the working components of the hot tub:

1. Insulating foam - A layer of closed cell foam is applied to the underside of the hot tub shell.

2. Air gap - Air trapped within the cabinet helps insulate the hot tub.

3. Ener-gard - An insulating foam panel fixed to the interior of the hot tub cabinet.

4. Outer panel - The cabinet provides the final insulating layer. The styrene of the Prestige hot tub cabinet panels provides superior insulation.