With the vigorous application of heaters, high-power heaters have high electrical energy consumption and high operating costs. We need to consider how to save energy and power from the following aspects: 1. When the medium is gas, it is necessary to reasonably describe the air volume and Temperature rise. Under the premise of satisfying the customer's air volume and temperature rise, it is necessary to summarize thinking, reasonably describe, and select appropriate parameters to prevent excessive air volume and temperature rise from causing excessive heater power, increasing energy consumption, and causing waste. 2. Increase the insulation layer on the outside of the heater. When the operating temperature is relatively high, it is necessary to increase the insulation layer, and choose different thicknesses for insulation according to different temperatures to save energy. 3. The pressure of the lower heater itself is lost. When the air that needs to be heated flows through the air heater, pressure loss will occur. The greater the pressure loss, the greater the energy consumption of the fan. The layout of the heater itself must be improved to minimize the pressure loss.