Our EPA approved Polyurethane Foam Insulation is used to seal your hot tubs from the elements. This ensures that heat loss is kept to our minimum standards, which is more stringent than any other hot tub manufacturer in the industry to save you more on energy costs.

D1 uses low power, 98 Watt circulation pumps to purify your water. In fact, 84% of the power that Ultrapure uses is returned to the water as heat, warming your hot tub for free.  Click here to read new white paper on UltraPure and UltraPure PLUS systems

All D1 hot tubs are expertly engineered and plumbed so that the Hydramax pumps are best utilized, ensuring that there is no wasted energy or horse power. This means a smaller more efficient pump that retains as much jet power as those of our larger competitors.

D1 hot tubs have a custom cover that has been tailored specifically to fit each model it is delivered on. In addition to a tight fit on the edges, every cover has a linear heat seal on the seam to prevent heat loss. With a 4” to 2.5” tapered cover, full heat insulation protection is virtually guaranteed.

When you click on a specific model on our spa model page, be sure to view the low estimated cost to operate your hot tub by clicking on the energy guide.