Made of stainless steel with no internal moving parts, Armstrong Flo-Direct® instantaneous water heaters are simple in design and operation. They are uniquely resistant to scale build-up, and their compact size requires minimal floor space.

Flo-Direct® uses complete thermal exchange (CTE) technology, which minimizes the impact of combustion in direct contact with water and reduces these constituents to trace amounts. The result is an unparalleled level of water quality that meets USFDA and EU bottle water and food ingredient water standards for direct use without additional filtration. (This statement presumes USFDA and EU compliant influent water.)

**99.7% HHV = 110.8% LHV
Maximum hot water temperature out 85°C (10°F to 140°F)
Suitable for use with natural gas or LPG

  • 99.7% efficiency (HHV**)
  • Utilizes practically all available energy in the gas
  • Increased safety of precision temperatures
  • Fast return on investment
  • Fuel savings as high as 30-60% when compared to steam/water heating systems
  • Heats water on demand
  • Same efficiency at all demands
  • Improved CO2 emissions
  • Lower maintenance
  • No insurance inspections required
  • No specialist staff required
  • Resistant to scaling
  • Drinking water compliant
  • No water treatment required
  • 10-year warranty on body and internals
  • 2-year warranty on all other components