A water heater includes a first heater, a second heater, and a controller. The controller can enable different operational modes of the water heater, wherein only the first heater operates, only the second heater operates, or both the first and the second heaters operate. The controller can also be configured to enable a hybrid operational mode and a bypass operational mode. Further, in the different operational modes, the controller can direct water flow to at least one of a first conduit coupled to the first heater, a second conduit coupled to the second heater, and a bypass conduit. The controller can be configured to receive input signals relating to environmental conditions around the water heater and/or an aquatic system in which the water heater is installed.

A fog generator assembly includes a water vapor generator, a fragrance dispenser, and a mixing element fluidly coupled to the water generator and the fragrance dispenser. The mixing element is configured to mix a fog of water vapor from the water vapor generator with a fragrance from the fragrance dispenser to produce an aromatic fog.

A fog generator assembly includes a water vapor generator, a fragrance dispenser, and a mixing element fluidly coupled to the water generator and the fragrance dispenser. The mixing element is configured to mix a fog of water vapor from the water vapor generator with a fragrance from the fragrance dispenser to produce an aromatic fog.

A method for treating water in a spa or a hot tub includes, for example, suspending a water treatment dispenser from an upper end of a filter cartridge disposed in a skimmer of the spa or the hot tub. The dispenser includes a water treatment material. A supply of water is passed from the spa or the hot tub into the skimmer and through the filter cartridge so that the dispenser suspended in the filtered water in the filter cartridge is operable to dispense the water treatment material from the dispenser, and a supply of treated filtered water from the filter cartridge is returned to the spa or the hot tub. A cover, for example, may be employed when the dispenser is not used.

An ionized pedicure chair system provides a pedicure treatment experience to a user with treated water. The system includes a built-in ionizer device configured to adjust the pH level of the water used for the pedicure as desired in the 2.5 to 6.0 pH range. The system includes a base supported built in water lines, a reclinable chair, and a double bowl system. The double bowl system includes an inner bowl and an outer bowl provided a decorative feature and eliminates spills from the inner bowl.

A lift assembly for a spa cover includes a lifting arm having a first end pivotally connectable to the spa cover and a second end pivotally connectable to a base of a spa, the connection of the second end of the lifting arm with the spa housing defining a pivot point, and a lift-assist device having a first end configured for coupling to the base at a point substantially directly below the pivot point and a second end operatively connectable to the lifting arm. The lift-assist device is configured to exert a generally upwards biasing force on the cover when the cover is received atop said spa.

The foot spa has a rotating drive hub and a pump. The hub has North and South pole domains encircling a rotation axis in alternating relation. The pump includes a housing and an impeller, the housing having a pair of sides and defining: a cavity having a center and a periphery; an intake that communicates with the cavity center; and one or more ports communicating with the periphery. The impeller is mounted in the cavity and: defines blades which are adapted, upon rotation of the impeller in the cavity, to draw water through the intake and eject water through the one or more ports; and includes a portion that is ferromagnetic and a portion that is not ferromagnetic, the portions: being adapted such that rotation of the drive hub causes rotation of the impeller and abutting one another, one being axially displaced from the other.

An exemplary embodiment of a user interface display panel includes a top or cover glass layer which extends to the perimeter of the panel housing. A touch-sensitive display layer is adhered to the bottom surface of cover glass layer to form a touch sensitive display assembly and is just smaller in area than that of the cover glass layer to provide a peripheral lip region for adherence to a waterproof gasket to bond the cover glass and display layer to the housing structure. The display layer is supported above the surface of the tub wall. The arrangement results in an active touch-sensitive display area significantly larger than display areas provided in the past by interface panels.

Devices, systems, and methods described herein can provide a simulated fluid environment similar to the mother's womb to recreate an ideal or more familiar environment for infants who are born before their ideal due date. In some embodiments, the premature infant amniotic bath incubator can comprise an incubating tank with synthetic or simulated amniotic fluid, a heating element(s), a temperature sensor(s), and/or thermostat(s) for temperature regulation.

A jet pump has an impeller with a magnet that can be rotated by a shaft having a magnetic drive plate and wherein the impeller and the magnetic drive plate are separated from one another by at least one solid wall surface. The impeller can be located in a pump housing having a base and a cover. The base can have a surface bearing so that the impeller can contact therewith and rotated against the surface of the surface bearing.