An inflatable spa is disclosed having improved strength. A water cavity of the inflatable spa may receive massaging air bubbles and/or jetted water.

A SPA bathtub and an operating unit therefore are provided. The operating unit includes a water circulation system including a diaphragm self-priming pump, a peristaltic pump, a water circulation pipeline, and a fluid switch assembly. The diaphragm self-priming pump operates before the peristaltic pump operates normally and stops operating after the peristaltic pump operates normally. During operation of the diaphragm self-priming pump, the fluid switch assembly is in a first operation state, so that water from the interior volume portion sequentially flows through the peristaltic pump, the diaphragm self-priming pump, the fluid switch assembly, and the water circulation pipeline and finally returns to the interior volume portion. During operation of the peristaltic pump, the fluid switch assembly is in a second operation state, so that the water sequentially flows through the peristaltic pump, the fluid switch assembly, and the water circulation pipeline and finally returns to the interior volume portion.

A bathing apparatus comprising a whirlpool pump; a heater; an air blower; a drain pump; and an electric module, wherein the electric module is configured to receive electric power from an electric power line and to distribute electric power to the whirlpool pump, heater, air blower, and drain pump, when electric power is distributed to one of the heater or the air blower, electric power cannot be distributed to the other of the heater or the air blower, and when electric power is distributed to the drain pump, electric power cannot be distributed to the whirlpool pump, the heater, and the air blower.

A gas heater for a swimming pool or spa includes a cabinet defining an interior, a combustion chamber enclosure, a heat exchanger positioned within the combustion chamber enclosure, a burner, a combustion blower configured to provide combustible gas to the burner, and electrical components positioned within the cabinet. The cabinet has a plurality of side panels and a top panel covering a top opening to the interior of the cabinet. The combustion chamber enclosure defines a combustion chamber, and is positioned within the interior of the cabinet. The combustion chamber enclosure also includes a burner opening in which the burner is positioned such that the burner is configured to dissipate combustible gas into the combustion chamber. At least one of the electrical components is configured to control the gas heater. The electrical components are accessible through the top opening when the top panel is removed.

Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment are provided. “Internet-of-Things” (IoT) functionality is provided for pool and spa equipment in a flexible and cost-effective manner. Network connectivity and remote monitoring/control of pool and spa equipment is provided by various components such as a network communication and local control subsystem installed in pool/spa equipment, and other components. Also disclosed are various control processes (“pool logic”) which can be embodied as software code installed in any of the various embodiments of the present disclosure.

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 system for supplementing the heater for a swimming pool comprises the use of a heat exchanger for the heat generated by an air conditioning evaporator or condenser. The system can also recover and use the otherwise lost heat of an attic and redirect the same to augment the heating of the water of a swimming pool.

A vapor compression refrigeration system having an air dehumidifying system and a heat transfer system. The dehumidifying system has a refrigerant circuit and an air circulating system transporting air from an enclosed space at least partly through the refrigerant circuit and back to the enclosed space. The refrigerant circuit carries a phase change refrigerant which picks up heat from the air passing through the air circulating system. The heat transfer system carries a fluid that will not freeze below the ambient temperature. A heat exchanger connects the refrigerant circuit to the heat transfer system to pass heat from the phase change refrigerant in the refrigerant circuit to the fluid in the heat transfer system. At least one heat removal unit in the heat transfer system to remove heat from the fluid.

An apparatus for controlling water temperature includes a housing defining a composting chamber for receiving compost and a conduit disposed within the housing for providing flow of water. The conduit at least partially receives heat generated by the compost and may include a first subconduit extending substantially about an axis of the housing, a second subconduit extending substantially about the axis of the housing and being spaced apart from the first subconduit and a plurality of elongated subconduits extending between the first subconduit and the second subconduit and providing fluid communication therebetween. The housing may have at least one translucent portion for permitting flow of light waves therethrough. The apparatus may have a mechanism for mixing the compost.

Exemplary embodiments are directed to swimming pool heat exchangers including a housing and one or more tube assemblies disposed within the housing. Each of the tube assemblies includes an elongated titanium tube and at least one fin welded to an outer surface of the elongated titanium tube. The elongated titanium tube and the at least one welded fin allow for corrosion resistance to swimming pool water while simultaneously allowing for improved heat transfer from the heat exchanger to the swimming pool water.