Our mechanical system recycles its own energy and waste. Heat generated in the kitchen by ovens, stoves, and refrigeration compressors is reclaimed and recycled. Instead of venting heat up and out into the atmosphere, which contributes to global warming, we instead, redirect the heat into an exchanger where it is used to pre-heat our domestic water for the house. By reusing our “wasted” energy, we conserve energy while providing for our home and caring for the environment.