Ultra Low NOx Direct Vent Gas Models

Ultra Low NOx Direct Vent water heaters utilize a co-axial (pipe inside a pipe) vent pipe that takes air in from the outside (outer vent) and vents combustion gases directly back to the outside (inner vent). It is the perfect choice for situations with insufficient combustion air. No electricity required.

Product Highlights
Eco Defender
Brass Drain Valve
Energy Star


  • Self Diagnostic Honeywell Gas Control
  • Closed Combustion
  • Reinforced Seals
  • Maintenance Free
  • Sight Window
  • Factory Installed Hydrojet® Total Performance System
  • Vitraglas® Lining
  • Cast Aluminum Air Intake Boot
  • Telescoping Solid Vent Kits
  • Flexible Vent Kit
  • 1" Non-CFC Foam Insulation
  • Pedestal Base.
  • Water Connections
  • Factory Installed Heat Traps.
  • Protective Magnesium Anode Rod
  • T&P Relief Valve
  • Low Restriction Brass Drain Valve
  • Complies with the latest ultra-low NOx requirement (10 ng/J NOx limit)

ULN Selection Guide

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