Adapt™ Premium Condensing Ultra-Low NOx Tankless Water Heater with X3® Scale Prevention
Top Service Items • Additional Resources
A. O. Smith’s ADAPT™ premium condensing gas tankless water heaters deliver robust, on-demand performance and the flexibility to install in practically any residential setting. Easily add scale prevention protection by replacing the bypass cartridge with an optional X3 cartridge sold separately — which can make the heat exchanger last up to three times longer than a standard tankless water heater while maintaining 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
Additional Resources
Product Selling Script 
Counter Loop Product Sales Sheet 
Product Specification Sheet 