Direct vent water heaters is good devices that heat water for homes and busines. Vangood makes these heaters to help get hot water safe and well. They pull air from outside to burn fuel, and push exhaust back outside. This make them safe indoor, as they dont draw air from the home inside. And they getting popular because can save energy and easy to install. Many people look for ways save on bills, direct vent heater help with that. If you're interested in other options, consider checking out our Gas Water Heater section.