''Easy as 1-2-3'' Tankless Selection for HomeownersOur “easy as 1-2-3 tankless selection concept is a good starting point for homeowners. The chart below shows which tankless models are typically selected based on the number of bathrooms in a home. For example, if your home has 1 bathroom, a Rheem tankless RTG2-42 series water heater should provide an ample supply of continuous hot water. If your home has 1-2 bathrooms, you should consider a Rheem RTG-53 series water heater. For up to 3 bathroom homes, the larger RTG-74 series tankless water heater should be selected. For homes with more than 3 bathrooms, large volume demands for hot water, or hot water circulating systems, you should contact a Rheem tankless professional for help in determining
