Abstract: A spa heats or cools air in the air space surrounding the water containment vessel to heat or cool the water in the water containment vessel. The air is heated and cooled and is circulated within the spa cabinet in contact with the underside of the tub and the plumbing for transferring or absorbing heat from the water through the tub and the plumbing. The air is heated by a solid state thermoelectric device or a conventional space heater and is cooled using a solid state thermoelectric device. Preferably a single thermoelectric device is mounted through a wall in the spa cabinet and is used for both heating and cooling the air in the air space.

Abstract: Apparatus and system for leveling a playing surface on a table, such as a billiards or pool table, which utilizes a plate which supports the playing surface and which is tiltable about an x and y-axis for maintaining contact with the playing surface regardless the angle of the surface relative to the frame. Further, the apparatus is height adjustable to assist with leveling the playing surface in engagement with the plate of the leveling apparatus. Leveling apparatus are also provided between the legs of the table and the frame and which can be pre-leveled before positioning the playing surface to minimize the amount of leveling required to level the playing surface relative to the frame.

Abstract: A spa heats or cools air in the air space surrounding the water containment vessel to heat or cool the water in the water containment vessel. The air is heated and cooled and is circulated within the spa cabinet in contact with the underside of the tub and the plumbing for transferring or absorbing heat from the water through the tub and the plumbing. The air is heated by a solid state thermoelectric device or a conventional space heater and is cooled using a solid state thermoelectric device. Preferably a single thermoelectric device is mounted through a wall in the spa cabinet and is used for both heating and cooling the air in the air space.