Guardian System™ - Air/fuel shut-off system offers double protection, maintenance free- no filter to clean. 

Flammable Vapor Detection Sensor - protective control system that disables the heater in the presence of flammable vapor accumulation. 

Long venting lengths up to 100 feet. 

PVC, ABS, or CPVC vent pipe options. 

Vertical or horizontal termination. 

New Quiet Blower - less noise than ever before. 

Self-Diagnostic System.

Environmentally Friendly Low NOx Burner. 

High Altitude Compliant - Tall models are certified for applications up to 7,700 feet and short models up to 6,000 feet. 

Self-Cleaning - EverKleen™ patented system fights sediment build up. 

Reduces fuel costs and provides more hot water. 

Patented magnesium anode rod design incorporates a special resistor that protects the tank from corrosion for longer life. 

Standard 110 volt electrical connection.