Gas water heater

The utility model discloses a gas water heater. The gas water heater comprises a shell, the shell is provided with an inner cavity, and an exhaust pipe communicated with the inner cavity is arranged on the shell; the hot water supply module comprises a fan, the refrigeration module comprises an ice making module and a refrigeration air module, the ice making module is used for making ice to store cold energy when the hot water supply module does not supply hot water, and the refrigeration air module is used for forming cold air by using the cold energy stored by the ice making module; the gas water heater is configured to form airflow in the inner cavity when the draught fan works so as to take away heat generated when the ice making module makes ice and heat generated when the refrigeration air module forms cold air, and the airflow is exhausted out of the inner cavity from the exhaust pipe. According to the gas water heater, the hot water supply module and the refrigeration module are arranged in the inner