• ENERGY STAR® certified
  • Adaptive Gas Control System
  • 3-year limited warranty
  • ENERGY STAR® certified
  • Adaptive Gas Control System
  • 3-year limited warranty
  • ENERGY STAR® certified
  • Adaptive Gas Control System
  • 3-year limited warranty
  • ENERGY STAR® certified
  • Up to 97% thermal efficiency
  • Helical heat exchanger
  • Operates at up to 96% thermal efficiency
  • Helical heat exchanger
  • Ultra quiet blower and burner to minimize noise
  • Operates at up to 96% thermal efficiency
  • Helical heat exchanger
  • Ultra quiet blower and burner to minimize noise
  • Self-Cleaning Hydro Cannon™
  • Automatic Flue Damper (120 - 390 Models)
  • Three Water Connection Options
  • ENERGY STAR® certified
  • Delivers 232 GPH at 100°F Rise
  • Integrated STX-199 condensing tankless with modulating burner delivers 96% thermal efficiency
  • Fan Assisted Combustion- The blower is built into the low NOx burner assembly
  • Complies with California SCAQMD Rule 1146.2
  • A stainless steel air flapper
  • ENERGY STAR® certified
  • Delivers 232 GPH at 100°F Rise
  • Integrated STX-199 condensing tankless with modulating burner delivers 96% thermal efficiency
  • Temperature adjustable up to 181°F.
  • Accurate, dependable control system requires no electric connections
  • Fixed automatic gas shutoff device for added safety
  • 75,100 BTU/h Input
  • Ultra Low NOx gas burner
  • Fully automatic controls
  • 75,100 BTU/h Input
  • Ultra Low NOx gas burner
  • Fully automatic controls
  • ENERGY STAR® certified
  • Up to 96% thermal efficiency
  • Helical coil heat exchanger
  • ENERGY STAR® certified
  • Up to 97% thermal efficiency
  • Helical heat exchanger