Abstract: A washer includes: a supply-water storage section configured to store supply water; a wastewater storage section configured to temporarily store wastewater and a wastewater heat recovery device including a water supply channel through which the supply water is supplied to the supply-water storage section and a drain channel through which the wastewater is drained from the wastewater storage section, and configured to exchange heat between the wastewater flowing in the drain channel and the supply water flowing in the water supply channel. the wastewater heat recovery device is disposed below the washing chamber, and is provided in a machine chamber in which a pump configured to deliver the supply water from the supply-water storage section to the washing chamber is disposed, and the drain channel is connected to a drain hole of the wastewater storage section.

Abstract: A washer that enables efficient heat exchange and can prevent a decrease in flexibility in installation of the washer is provided. A washer 1 includes: a supply-water storage section 28 configured to store supply water W2 to be used for washing and rinsing an object P to be washed accommodated in a washing chamber 3; a wastewater storage section configured to temporarily store wastewater W1 that has been used for washing and rinsing the object to be washed; and a wastewater heat recovery device 450 including a water supply channel 52 through which the supply water is supplied to the supply-water storage section and a drain channel 51 through which the wastewater is drained from the wastewater storage section 15, and configured to exchange heat between the wastewater flowing in the drain channel and the supply water flowing in the water supply channel.