X3 Scale Prevention Technology:

• Extends the life of the unit up to three times longer (compared to other tankless models without X3 technology)
• No warranty exclusions for hard water with X3 models
• Maintains “like-new” performance longer
• Easily add scale prevention to M models, kit sold separately

Features:

• Integrated Recirculation Pump
• 160k, 180k, 199k BTU/h
• Field convertible from Natural Gas to Liquid Propane, Kit Included
• 9k BTU min. input
• 22:1 Turndown Ratio
• 0.95 UEF (ENERGY STAR® certified)
• Max flow rate 10.5 GPM, 0.4 GPM activation
• Ultra-Low NOx emissions
• 1/2” Gas Line
• Venting Flexibility 2” up to 75’ & 3” up to 150’

Delivering robust, on-demand performance, these high efficiency heaters install in practically any residential setting. The single stainless steel, heavy-duty heat exchanger design is more resilient to scale buildup and corrosion and when coupled with X3 Scale Prevention Technology, there is zero lifetime descaling maintenance required.