The application of renewable energy can effectively alleviate energy shortages and environmental pollution. However. electric heating and traditional combustion heating are still widely used in western Sichuan. This paper analyzes a techno-economic comparison between a solar-air energy heating system (System 1) and a geothermal-air energy heating system (System 2) designed for Litang. https://lockdownsecuritycanada.shop/product-category/shock-sensor/