Larger than more the economical HC-1, the HC-2 is more powerful model in the Sigma Thermal HC line of thermal fluid heaters.

-Double Helical Coil Configuration: Three passes of flue gas along conservatively designed surface area.

-Base efficiencies can exceed 88% (LHV Basis), and with an optional economizer can exceed 93% (LHV basis).

-Flue gasses are significantly cooled eliminating the need for most internal shell insulation: Minimal long term maintenance concerns.

-Fuel Source Flexibility : Standard or engineered burner configurations for use with both traditional and alternative fuel sources. BACT burners available to meet all emission requirements. (i.e. Low NOx)

-Vertical Up-Fired, Vertical Down-Fired, or Horizontal Configurations

-Capacities available from 500,000 to 75MM Btu/hr.