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1992: Full foam added
Better insulation
Supported pipes
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1996: Full foam changes to perimeter foam
Reduces the damage caused in the case of faulty plumbing
Easier to service; no longer requires a full dig out
Able to access the plumbing without compromising the insulation or structural integrity
Motor heat used to heat the water
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2000: Perimeter foam changes to HydroWise Thermal Shield
Eliminated plumbing support issues and resulting leaks
Eliminated gaps in panels, resulting in better heat insulation
Added motor vents to prevent overheating and pump failure
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2005 HydroWise Technology
Polyfilm barrier supports plumbing
Easy access for service
Motor waste heat recycled
Eco-heat exchange venting expels heat in the summer and traps heat in the winter