It is the idea of producing a cooling and heating effect in one single chamber that shifts from its maximum temperature to its minimum temperature just by adjusting a simply operated switching button. This type of device can find a wide variety of applications in medicinal, food and beverage transportation commercially and also for household purposes. Travelers can make the best use of it. This can work either with solar power or rechargeable batteries and Peltier effect Design and Fabrication done on solar air cooler cum heater.