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Classic Powered Damper (gas powered)
  • High performance and lower operating cost
  • Compliant with many electric utility incentive programs

Energy Efficient Damper Design

  • .67 – .69 Energy factor
  • Meets or exceeds ENERGY STAR™ Phase II certification
  • 24 VAC Powered flue damper
  • Lower stand-by losses
  • More hot water at a lower operating cost

Self-Diagnostic System

  • Integrated self-diagnostic system control takes away the guesswork

Guardian System™

  • One-of-a-kind air/fuel shut-off device offers double protection
  •  Maintenance free – no filter to clean
  • Standard replacement parts

Flammable Vapor Detection Sensor

  • Protective control system that disables the heater in the presence of flammable vapor accumulation

Longer Life

  • Patented magnesium anode rod design incorporates a special resistor which protects the tank from rust.

High Altitude Compliant

  • 50 gallon 50k BTU product certified for applications up to 6,000 feet above sea level
  • All other models certified for applications up to 10,200 feet above sea level


  • Environmentally friendly burner – Low NOx design for low nitrous oxide emissions Brass drain valve & temperature and pressure relief valve are included
  • Standard 110 volt electrical outlet required for installation.  Includes 19 ft. (3-prong grounded) power cord Meets or exceeds National Appliance Energy
TYPEGAL CAP. Model NumberEnergy Factor Energy Star
Gas50PRO50E2 0.67Yes
Gas50PRO50-50E2 0.67Yes
Gas40PRO40SE2 0.67Yes
Gas40PROG40T-40N CN69 PD
Gas40PROG40T-36N CN69 PD
Gas40PROG40S-40P CN67 PD
Gas40PROG40T-36P CN67 PD
Gas50PROG50-40N CN67 PD
Gas50PROG40T-36P CN67 PD
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