Gas water heater

The utility model discloses a gas water heater, including casing, intake pipe, combustion chamber, fan, combustor, heat exchanger, gas pipe and exhaust pipe, the water heater still includes control system, and control system includes temperature measurement module, display screen, treater, air regulation module, the temperature measurement module includes temperature -sensing probe and temperaturesensor, and head position in combustor burner department is visited to the temperature sensing, and temperature sensor is located heat exchanger's delivery port, temperature -sensing probe and temperature sensor are connected with the treater, with data transfer to treater, the air regulation module includes two proportional valves, and every branch intake pipe sets up a proportional valve, and the treater is connected with the proportional valve electricity, and the aperture of treater controlling ratio valve is big or small, the treater is connected with the display screen electricity, andon the casing was located