eF® Series Gas Commercial Water Heaters

Ultra High Efficiency

Save up to 20% annually in fuel costs! With thermal efficiencies as high as 99.1%, the eF Series delivers the ultimate in eco-friendly and cost-conscious operation. Installation and venting flexibility, quiet operation, and tough construction make these ultra high efficiency water heaters the smart choice for retrofit or new installation.

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    Key Features

  • 60 or 100-gallon storage capacity with BTU’s ranging from 125,000 to 399,999
  • Submerged combustion chamber delivers up to 99.1% thermal efficiency
  • Low NOx for eco-conscious operation
  • Heavy duty construction stands up to extended duty cycles with improved heat transfer and product longevity
  • Whisper-quiet operation (less than 55 db)
  • Direct vent or power vent vertically or horizontally with economical 3" or 4" PVC, CPVC, or ABS vent pipe
  • Zero inch clearance to combustibles