Rheem Tankless water heaters come in a variety of residential options, which include the RTG-42 Series (indoor model),RTG-53 Series, the RTG-74 Series (indoor and outdoor models) and the Heavy Duty Series GT-199 (indoor and outdoor models) and are available from dealers throughout the United States. There are Direct Vent Models were added in 2006
Features & Benefits of Rheem Tankless Water Heaters

Continuous hot water on demand – Tankless water heaters provide a steady flow of hot water whenever it’s needed -- bath after bath, shower after shower.

Compact, space saving design – Rheem indoor and outdoor tankless water heaters are just over two-feet tall, weigh 55 pounds (or less), and can be attached to an interior or exterior wall.

Energy efficiency – Rheem tankless water heaters are more energy efficient (propane and natural gas models) than traditional water heaters because they eliminate the need to maintain a large supply of heated water. Rheem tankless water heaters qualify for up to a $300 energy tax credit.

Precise temperature delivery – Rheem tankless water Heater products put consumers in complete control of water temperature with a digital controller. A touch of the fingertip can adjust the maximum water temperature up or down to achieve the perfect comfort level for the individual user. This feature is ideal for families with young children and older adults.

Self-diagnostic program – Rheem tankless water heaters use smart technology. The built-in self-diagnostic program displays maintenance information when necessary. In the event an error is detected in the tankless unit, a code will be displayed for easy troubleshooting.

GAMA Certified – Rheem tankless water heaters are certified by GAMA, an independent testing agency for government standards and certifications. In fact, Rheem products meet or exceed all energy efficiency requirements.

Rheem Tankless Water Heaters are the same tankless sold under the Paloma Brand at Home Depot