Eric is joined by Mark Wille to talk about a devise called ThermoDrain, which is a heat exchanger designed to preheat water by recapturing heat. This innovative system recycles heat from draining water to reduce energy usage for heating incoming water.

ThermoDrain is particularly useful in colder climates, as it can raise the temperature of water before it enters the water. This process significantly reduces the energy required to heat water, making it an ideal solution for homeowners looking to save on energy bills. Eric and Mark highlight its efficiency, mentioning that a family of four could save $130 to $160 annually with this system.

The system is built with durable materials like PVC and copper and operates without mechanical parts or electricity, relying purely on gravity and heat exchange for its functionality. This heat exchanger is available in various sizes, making it adaptable for different home setups, and the simple installation and maintenance-free operation further enhance its appeal as a sustainable, energy-efficient choice for modern homes.