• ENERGY STAR® certified with a UEF up to 0.95
  • 199,000 BTU input
  • 8-year limited warranty on the heat exchanger
  • Up to 0.95 Uniform Energy Factor (UEF)
  • Continuous maximum flow rates up to 10.0 GPM
  • Easy-link up to 4 units
  • Up to 0.95 Uniform Energy Factor (UEF)
  • Continuous maximum flow rates up to 10.0 GPM
  • Easy-link up to 4 units
  • Up to 0.95 Uniform Energy Factor (UEF)
  • Continuous maximum flow rates up to 10.0 GPM
  • Easy-link up to 4 units
  • Up to 0.95 Uniform Energy Factor (UEF)
  • Continuous maximum flow rates up to 10.0 GPM
  • Easy-link up to 4 units
  • ENERGY STAR® certified
  • Delivers 232 GPH at 100°F Rise
  • Integrated STX-199 condensing tankless with modulating burner delivers 96% thermal efficiency