The new GWH C 800 ES condensing unit offers a flow rate of up to 10 gpm, 92% efficiency, and the most advanced features in tankless technology, yet requires only 199,000 BTU/Hr input. It is designed to cascade for increased flow rates and will accommodate recirculating applications as well.

• 92% thermal efficiency – .90 energy factor
  
• Condensing heat exchanger for maximum efficiency
  
• Vents vertically or horizontally with 3" PVC, CPVC or ABS-DWV
  
• Concentric and twin pipe venting options
  
• Direct vent, room-sealed combustion
  
• Ability to cascade units for increased flow rates
  
• Suitable for recirculating applications
  
• Outdoor installation using optional kit
  
• Available in natural gas (NG) or liquid propane (LP)
  
• 15-year warranty