EZ Supreme Tankless Water Heater - 6.4 GPM - NG Natural Gas - Indoor Whole Home - Direct Vent Exhaust Included 165,000 BTU - Natural Gas Model Provides Enough Hot Water For upto a 4 Bath Home Easy To Use LCD Control Panel with Constant Temperature Settings Direct Vent Dual Chamber Intake/Exhaust Provided Free with Purchase 30 Day Money Back Satisfaction Guarantee - 1 Year Free Product Replacement Warranty