- Primary Room Heating (Central or Zone)
- Supplemental Room Heating (Heat Pumps)
- Air Tempering (Outside Air)
- Preheating (Make-Up Air)
- Reheating (Overcooling applications)
- Industrial and Commercial Buildings
Type DH duct heaters are pre-engineered,
factory assembled units consisting of a
standard frame section, heating elements and
a prewired control panel. They are available
in a wide range of standard frame sizes, with
various heating capacities and heating stages
operating on AC voltage ratings of 120 to
The standard duct heater is designed to be
inserted in a rectangular opening cut in the
side of a horizontal or vertical duct. For larger
ducts or where it may be more desirable to
attach the duct directly to the heater, a frame
may be added to the heater.
Heater Frame — Galvanized for corrosion
Heating Elements — 80/20 Nickel/Chromium
open coil or painted steel finned.
Mounting — Insert or flanged designs configured
for horizontal airflow.
Control Panel — Integral control panel prewired
for easy wiring and installation.
Listed for zero clearance to combustible
Overtemperature Protection — provided with
both manual and automatic resets.
Factory Prewired — 48 Amp maximum
circuits to meet NEC requirements.
Controls — 24V transformer, magnetic contactors,
airflow switch, disconnect switch and
overtemperature cutouts allow for thermostat
Fusing — Power fusing on heaters above 48
Easy Wiring access through opening in