To provide a hot water supply system supplying hot water for usage at a high water pressure without causing a water hammer.
A hot water supply unit 3 is connected to a hot water supply piping 2 connected to a hot water supply tank 1, and a water supply piping 4 is connected to the hot water supply unit 3. The hot water supply unit 3 is provided with a hot water and water mixing part 5 mixing hot water supplied from the hot water supply piping 2 and water supplied from the water supply piping 4, and a mixed hot water output opening 6 outputting and supplying hot water mixed by the hot water and water mixing part 5 to a hot water using apparatus 11. A booster pump 8 pressurizing and sending the hot water supplied from the hot water supply piping 2 is provided in a hot water supply passage 7 in the hot water supply unit 3 connected to the hot water supply piping 2. By providing the booster pump 8 to the hot water supply unit 3 connected to a terminal of the hot water supply piping 2, hot water can be supplied and used at a high water pressure when using the hot water at a higher floor, or when using the hot water in a shower or the like.
NISHIKAWA MAKOTO
URANO MASASHI
Atsuo Mori
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