Open Coil Heaters Open coil elements are the most efficient type of electric heating element while also the most economically feasible for most heating applications. Used predominantly in the duct heating industry, open coil heater elements have open circuits that heat air directly from the suspended resistive coils. These industrial heating elements have fast heat-up […]
Duct Heaters Air duct heaters are ideal solutions for a variety of applications, including space heating, primary heating, secondary heating auxiliary heating, reheating, or multizone and variable air volume heating. National heaters use proprietary software packages to specify coils and wiring configurations, sheet metal, element support racks, controls, options, and accessories. Our software allows immediate
