Attention: TDR Forum Junkies 
I am trying to understand the Btu ratings for these tankless water heaters. I need one to heat my new garage/shop. The tankless heaters are rated in "gas input Btus" per hour (ex. 19,500 - 140,000 Gas input Btu/hr). If I need 11,000 Btus per hour to heat the shop, then is this the same as the Btu rating I need for the water heater? I guess the words "Gas input" on the heater Btu rating is what is confusing.
-Deon
-Deon
