Caloritech™ HVAC Heaters come in three different series.
DFF & DIF Series
The Caloritech™ DFF & DIF Tubular Overhead HVAC Heaters are designed for operation with a primary HVAC system. The DFF comes with Finned tubular (Calrod® type*) elements while the DIF features Non-finned tubular (Calrod® type*) elements. The elements are positioned in a metal fabricated frame generally designed for removal during servicing without disturbing the heater frame. Elements are rigidly braced to minimize vibrations.