A fogless mirror assembly includes a mirror enclosure and a water reservoir configured to be removably coupled to the mirror enclosure. The mirror enclosure includes a mirror and a frame defining an internal cavity having a water inlet and a water drain. The water reservoir defines a fluid cavity and includes a water outlet and an outlet valve configured to automatically open the water outlet when the water reservoir is coupled to the mirror enclosure such that a volume of water flows from the fluid cavity, into the internal cavity through the water inlet, and exits the internal cavity through the water drain to transfer thermal energy from the water to the mirror thereby increasing the temperature of the mirror from a starting temperature to at least approximately a dew point of water vapor proximate to mirror.