Modulating Condensing Ultra Low NOx Commercial Gas Water Heater. optiTHERM is a fuel-saving, long-lasting, minimal maintenance gas commercial water heater engineered and built to offer Lowest Total-Cost Hot Water™

Categories: , Brand: .

Product Description


The OptiTherm offers up to 99% thermal efficiency by modulating fuel input to supply variable domestic hot water demand.

  • 125,000-500,000 BTU
  • Modulating Blue Flame Submerged Burner optimizes thermal efficiency.
  • Automatic ICCP corrosion protection system minimizes maintenance costs – eliminates sacrificial anodes.
  • 99, 100 gallon or 125 gallon capacities
  • Natural gas or propane
  • Ultra-robust materials and construction maximize longevity.
  • Ultra-Low NOx emissions are SCAQMD certified.
  • Standard 5-year tank/heat exchanger commercial warranty.
  • Energy-Saving Turbofins conduct more heat into water
  • Robust single-flue design yields a stronger, more durable tank

Specification Sheet
Performance Table
Installation Manual for optiTHERM 199, 150, and 125
Installation Manual for optiTHERM 125 Gallon Series
Installation Manual for optiTHERM 100 Gallon Series
optiTHERM Start-Up Form