Most manufacturers of indirect water heaters provide two types of rating information.One is called the first hour rating; the other is called the ____ rating.

Question

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The first hour rating of an indirect water heater refers to the amount of hot water it can produce in the first hour of use. The continuous flow rating refers to the amount of hot water the unit can consistently produce over an extended period of time.

Most Manufacturers of Indirect Water Heaters Provide Two Types of Rating