Electric Duct Heaters in North and South Carolina
Hahn Mason Air Systems is proud to be an integral part of the North and South Carolina building construction and mechanical equipment industry with 84 years of experience, serving you from our 9 local offices and warehouse locations in Charlotte and Charleston. We represent one of the finest electric duct heater manufacturers in Redd-i and are proud to offer their technology on your next project.
What is an electric duct heater?
An electric duct heater is a self-contained or two-part assembly designed to be installed in the air stream of a duct system. It may be located in a main supply duct serving an entire building, in a branch duct serving one or several zones, or in a branch duct serving a single room.
The duct heater assembly consists of a steel frame, heating elements, and an integral or remote terminal box. These matched components are custom fabricated in a wide range of sizes, heating capacities, and control configurations.
Types of Electric Duct Heaters
Open Coil
- Releases heat directly into air stream resulting in
lower element temperature - Low-pressure drop due to high percentage of
open area - Lightweight, easily installed with little or no
mounting supports - Higher wattage per square foot of duct area
- Economical with quick ship delivery available
Finned Tubular
- Slower heating and cooling, and relatively high thermal
inertia for closer temperature regulation - Safety – shock hazard due to accidental contact in
duct is reduced - Not as susceptible to shorting of elements due to
foreign material in duct - Easily serviced for element replacement
- Rugged, durable – withstands physical abuse
How much heat is right for you?
Insulation
R-Value*
Recommended
FHA Standard
Minimum: Not Recommended
Ceiling
R-24
R-19
R-11
Walls
R-13
11
R-7
Floor
R-24
11
—
Zone
Approximate Wattage Need Per Square Foot
1
8.6
10.0
14.6
2
7.7
9.0
13.1
3
7.1
8.2
12.0
4
6.4
7.4
10.8
5
6.0
7.0
10.2
*”R” values are industry standards for insulation effectiveness. Ask company representative for assistance if you do not know “R” for your present structure insulation.
Baseboard or wall mount style? Recessed or surface type? It’s easy to select the heater that’s right for you.
1. Measure the size of the room(s) or area you intend to heat for square footage.
You will need the length times the width to get this calculation.
2. Find your location on the map above. This determines your basic heating zone.
3. The chart shown below the map lists insulation values based on the effectiveness of the insulation presently in your home. Find your heating zone on the chart and the approximate wattage per square foot you will need.
4. Multiply the total number of square feet you intend to heat by the approximate wattage per square foot you just obtained. This will determine your total heating requirement in watts for the room.
How Much Heat is Right For You?
- Figures are based on 15% total window and door openings in outside walls, and 3/4 total home air changes per hour.
- Typical frame-type construction with unheated basement or unventilated crawl space.
- If you do not have storm doors and windows, add 30% to the watts per square foot (multiply by 1.3).
That’s all there is to it! Now choose the heater with a wattage equal to what you need. Your final selection will, of course, depend on available wall space, window placement, etc. For help figuring out the wattage you need, contact Hahn Mason today!
Contact Hahn-Mason for Your Next Heating Application
Are you located in the Carolinas and considering electric duct heaters for your facility? Contact Hahn-Mason Air Systems today at (704)-523-5000. Hahn-Mason has 9 offices conveniently located in the Charlotte and Charleston area.