Abstract: A water recirculating device, liter counter, and temperature regulator for showers, which allows the user to predetermine the water temperature required for any bathroom having cold water network and hot water network, whereby any water below the predetermined temperature is recirculated passing through the boiler of the house until it reaches the temperature preset in the device, wherein said device is composed of a housing, a temperature regulator, an LCD display, a LED ring, two water valves; a hot and cold water inlet; a three-way valve; a flowmeter connected to a pump; a thermostatic valve; a servomotor; and an integrated circuit board; and a method.