The Rinnai EX08DT is a direct vent wall furnace that provides efficient and reliable heating for your home. This furnace uses natural gas for heating and has a compact size, making it ideal for small spaces. With a digital thermostat, you can easily adjust the temperature to your desired level. The EX08DT has a direct vent system, which means it draws in outside air for combustion and exhausts any gases outside, ensuring that the air inside your home is safe and clean. This furnace also has a low NOx emissions rating, making it an environmentally friendly choice. Overall, the Rinnai EX08DT is an excellent option for anyone looking for a reliable and efficient way to heat their home.