Air panels use a south facing insulated box with ducting and a transparent glass to create heat from the greenhouse effect and transfer that warm air into a home to offset additional heating needs. They utilize a differential temperature controller that measures the difference between the air within its panel and the ambient indoor temperature of a home. If the home’s thermostat is “calling” for heat and the panel is reading higher than the room temperature, a fan will draw air from the home and blow it through the air panel to gain heat and then back into a living space.