Who invented fridge?

The first mechanical refrigeration was developed in 1805 by Oliver Evans. However, the first person to invent a refrigeration unit that could be used in a home was Jacob Perkins in 1834. Perkins' invention was a closed-cycle vapor-compression refrigeration system that used ether as the refrigerant. In 1856, Alexander Twining invented a refrigeration unit that used compressed air as the refrigerant. This unit was more efficient than Perkins' invention, but it was also more expensive. In 1876, Carl von Linde invented a refrigeration unit that used ammonia as the refrigerant. Linde's invention was the first refrigeration unit to be used commercially.