Master Spas builds every Michael Phelps Signature Swim Spa to be energy efficient and environmentally friendly so that it can be used year-round, no matter the weather. The propulsion system is driven by an ultra-efficient motor, and environmentally friendly Icynene foam insulation makes the series the most energy efficient in the industry. Every swim spa is built to not only meet but to exceed the stringent California Energy Commission efficiency standards. All resulting in what really matters — a superior swim spa experience and savings for you and your monthly utility bill.
Safety, protection and energy efficiency are built in to the exclusive Master Spas Covers. We make every cover to the strict ASTM-F1346 standard for lockable safety covers. Our swim spa covers are also certified through UL to verify safety standards. Constructed using top grade marine vinyl with UV protection and high density 5" – 3" tapered foam, these covers lock heat in and last a long time — and that saves you money.