Gas water heater

The utility model belongs to the technical field of gas water heaters, and particularly provides a gas water heater. The gas water heater aims at solving the problem that a sandwich water phenomenon occurs when an existing gas water heater is started again after being stopped for a short time. The gas water heater comprises a burner, a heat exchanger, a heat accumulator, a fan, a water pipe, a bypass pipe and a water mixing valve. The fan is used for driving air heated by the combustor to sequentially flow through the heat exchanger and the heat accumulator. The water pipe comprises an upstream section, a midstream section and a downstream section, and the midstream section is in thermal connection with the heat exchanger and the heat accumulator so that water in the water pipe can sequentially flow through the heat accumulator and the heat exchanger. One end of the bypass pipe is in fluid connection with the upstream section, and the other end of the bypass pipe is in fluid connection with the downstream sec