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Hi Delta® ss Water Heaters, HD101-HD401


Model Number Full Input in BTUH Indoor Stack Dia.
 WH-HD101  100,000  4″
 WH-HD151  150,000  4″
 WH-HD201  199,000  5″
 WH-HD251  250,000  5″
 WH-HD301  299,000  5″
 WH-HD401  399,000  6″

Available Firing Modes

 WH1 On-Off
 WH3 2-Stage


  • All models Indoor/Outdoor certified.
  • Efficiency:
    •85% AFUE HD101-HD301.
    •85% Water Heaters- standard.
  • Patented burner “security blanket” enhances staged combustion, minimizes installation/start-up issues, and protects burners from metal fatigue.
  • 105ºF minimum inlet water temperature.
  • Brass headers with copper finned tube heat exchanger.  Glass-lined, cast-iron headers and cupro-nickel tubes available as options.  AB 1953 compliant.
  • Sidewall venting capable. No extractor needed for most applications.
  • Ducted combustion air ready. TruSeal® CSA-Certified direct-vent available.
  • Certified under SCAQMD Rule 1146.2.  Meets all Low NOx regulations.
  • Available for natural gas or propane.