At the present time, the crude oil price is increasing at an alarming rate. Sooner or later this increase will also be reflected in the electricity cost in Malaysia, which will encourage consumers to look for products that are more energy efficient. Out of so many household devices, there are two that can be combined easily to become a 2 in 1 system. An air conditioning unit and a water heater, incorporated with a heat recovery device can save energy as well as money.