Condensing Tankless with X3® Technology

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Introducing our full line of residential condensing gas tankless water heaters with X3® Scale Prevention Technology. Designed with both consumers and contractors in mind, X3® Technology prevents scale buildup in a tankless unit, eliminating the need for descaling maintenance, tripling the lifetime of a unit and enabling it to run at like-new performance.

Features and Benefits

How It Works

Application and Installation

Top Service Items

Cartridge Installation

Error 111 Ignition Failure

Error 121 Loss of Flame

Error 991 Imperfect Combustion

Additonal Resources

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