A bath water heating device for use in a small water environment, such as a bathtub or the like, that is operable to maintain water in the small water environment at a desired temperature. The device may filter water as it is pumped through the device. Additionally or alternatively, the device may provide ambient relaxation and/or entertainment content to a user, such as a bather or the like. The device may be wirelessly connectable to external input/output devices.
