Water dispensing device for at least dispensing cooled filtered drinking water, comprising - a hot water tank designed to keep hot water at a temperature of at least 65°C, for example at least 95°C, comprising: - a filter for filtering the hot water, - a hot water tank feed for feeding fresh water into the hot water tank, - a hot water tank discharge for discharging hot water from the hot water tank, wherein the filter is arranged in the hot water tank, in the hot water tank discharge or in the hot water tank feed, such that the hot water discharged by the hot water tank discharge is filtered by the filter, - a cold water tank designed to keep cooled water at a temperature of at most 20°C, comprising: - a cold water tank feed for feeding water into the cold water tank, - a cold water tank discharge for delivering cooled water from the cold water tank, characterized in that the water dispensing device comprises - a heat exchanger comprising: - a first heat exchange duct with a first inlet and a first outlet, and - a second heat exchange duct with a second inlet and a second outlet, wherein the first heat exchange duct and the second heat exchange duct are designed to exchange heat with one another, wherein the first inlet is connected to the hot water tank discharge and the first outlet is connected to the cold water tank feed, and wherein the second inlet is to be connected to a fresh water duct and the second outlet is connected to the hot water tank feed, so that the hot water can be fed from the hot water tank into the cold water tank via the first heat exchange duct in order subsequently to be dispensed as cooled filtered drinking water. - a hot water tank designed to keep hot water at a temperature of at least 65°C, for example at least 95°C, comprising: - a filter for filtering the hot water, - a hot water tank feed for feeding fresh water into the hot water tank, - a hot water tank discharge for discharging hot water from the hot water tank, wherein the filter is arranged in the hot water tank, in the hot water tank discharge or in the hot water tank feed, such that the hot water discharged by the hot water tank discharge is filtered by the filter, - a filter for filtering the hot water, - a hot water tank feed for feeding fresh water into the hot water tank, - a hot water tank discharge for discharging hot water from the hot water tank, wherein the filter is arranged in the hot water tank, in the hot water tank discharge or in the hot water tank feed, such that the hot water discharged by the hot water tank discharge is filtered by the filter, - a cold water tank designed to keep cooled water at a temperature of at most 20°C, comprising: - a cold water tank feed for feeding water into the cold water tank, - a cold water tank discharge for delivering cooled water from the cold water tank, characterized in that the water dispensing device comprises - a cold water tank feed for feeding water into the cold water tank, - a cold water tank discharge for delivering cooled water from the cold water tank, characterized in that the water dispensing device comprises - a heat exchanger comprising: - a first heat exchange duct with a first inlet and a first outlet, and - a second heat exchange duct with a second inlet and a second outlet, wherein the first heat exchange duct and the second heat exchange duct are designed to exchange heat with one another, wherein the first inlet is connected to the hot water tank discharge and the first outlet is connected to the cold water tank feed, and wherein the second inlet is to be connected to a fresh water duct and the second outlet is connected to the hot water tank feed, so that the hot water can be fed from the hot water tank into the cold water tank via the first heat exchange duct in order subsequently to be dispensed as cooled filtered drinking water. - a first heat exchange duct with a first inlet and a first outlet, and - a second heat exchange duct with a second inlet and a second outlet, wherein the first heat exchange duct and the second heat exchange duct are designed to exchange heat with one another, wherein the first inlet is connected to the hot water tank discharge and the first outlet is connected to the cold water tank feed, and wherein the second inlet is to be connected to a fresh water duct and the second outlet is connected to the hot water tank feed, so that the hot water can be fed from the hot water tank into the cold water tank via the first heat exchange duct in order subsequently to be dispensed as cooled filtered drinking water.