HOT WATER STORAGE TYPE HOT WATER SUPPLY DEVICE

PROBLEM TO BE SOLVED: To provide a hot water storage type hot water supply device which has achieved reduction in the maximum value of power consumption in a specific time zone in a multiple dwelling house such as a condominium and the like, even when a plurality of hot water storage type hot water supply devices for boiling hot water by utilizing power are installed in a multiple dwelling house such as a condominium and the like.SOLUTION: A hot water storage type hot water supply device has a first operation mode and a second operation mode which perform boiling operations for heating hot water by heating means 14 in a late-night time zone, when the amount of the residual hot water in a hot water storage tank 1 for storing hot water heated by the heating means 14 which heats water by utilizing power is a predetermined value or less. While start time and/or stop time when the boiling operation is performed in the first operation mode are different from those when the boiling operation is performed in the second operation mode, the hot water storage type hot water supply device includes determination means 35 for determining whether the boiling operation is performed in the first operation mode or the boiling operation is performed in the second operation mode.