Electro Industries EM-WD102S5-SL1
Electro Industries EM-WD102S5-SL1
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Electro Industries EM-WD102S5-SL1, WarmFlo Electric Plenum Duct Heater -15" Downflow, 10 kW



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Electro Industries EM-WD102S5-SL1, WarmFlo Electric Plenum Duct Heater -15
Electro Industries EM-WD102S5-SL1, WarmFlo Electric Plenum Duct Heater -15" Downflow, 10 kW
Model: EM-WD102S5-SL1
Product Q&A
How-To Articles


    This unit can be used in conjunction with a single stage heat pump, with one or two-stage air conditioning, or without air conditioning. This unit is compatible with single or multi-stage gas or oil furnaces with or without variable speed blowers. This unit includes automatic dual fuel control, with manual override switch. A conventional 4-wire thermostat must be used when installing with a heat pump. The patented WarmFlo Zero-Clearance Pleanum Air Heaters are electric conversion system converts your existing natural gas, LP, or oil furnace into a "Dual-fuel" (electric/gas-oil) system. Having this ability to use lower cost electric rates and by using the most cost effective heating source available can save you hundreds of dollars off of your heating bills each year. To understand the true cost of energy for your heating system view the electric vs. gas/oil chart. With electric's 100% efficiency you will be able to get an idea of the cost savings available by usingelectric's off-peak rates. The WarmFlo Select Electric Plenum Heater Series enhances overall heating system comfort, performance, and effi ciency. Whether you are combining a gas or oil-fi red furnace or adding an air source heat pump, WarmFlo can maximize your heating system's performance by monitoring outdoor and warm air plenum temperatures. Complete all-inclusive controls make installation and setup easy. Using our dual energy selector makes switching energy types as easy as a "fl ip of the switch". How does WarmFlo work with an air source heat pump? The WarmFlo controller receives temperature information from the warm air plenum sensor and the outside sensor to monitor the heating system performance. Using data from the sensors, the WarmFlo intelligent controller automatically establishes a warm air delivery temperature ideal for the specific outdoor temperature. As outside temperature drops, the air source heat pump output decreases and the warm air required to heat the home increases. The WarmFlo plenum heater automatically adds heat in 500 watt increments to meet the heating requirements of the home.
  • Electro Industries EM-WD102S5-SL1 Features
  • Provides a control technology for utilizing the high efficiencies of a heat pump down to at least 0 F.
  • Generally provides $400+ annual operating savings compared to dual fuel HP installations.
  • Proportional control - outlet temperature ramps up with decrease in outdoor temperature.
  • Overcomes heat pump "cold air syndrome".
  • Mini Demand Control or Load Shed.
  • Setup dial selections - Heat Pump or non-Heat Pump.
  • Heating capacity determined by outdoor temperature.
  • Thermostat or end switch connection (R and W).
  • Load management control provisions.
  • Heavy duty sheet metal enclosure.
  • Approved zero clearance above A-coil or furnace.
  • Single conventional 4-wire thermostat control.
  • Spin finned rod elements (20-year warranty).
  • 2-year parts warranty.
  • Can be added to most 100-amp service entrances - 5 kW firm load, 5 kW shed load.
  • Typically less airflow upgrades and less baffling requirements.
  • Quiet operation with individual DC relays.
  • Energy control selector.
  • Made in the USA.
  • Factory tested.


specs product image PID-18304
Product Category
Electric Heater
General Information
Product Line
Product Category
Electric Heater
Modulating/Staging Learn More
Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More
Configuration Learn More
Orientation describes the direction that air will flow through a piece of equipment. (e.g. air will flow horizontally through a "Horizontal" unit heater.) Most equipment will only function properly if installed in the proper orientation.
Heating Capacity
34000 BTU
Heating Capacity (kW)
10 kW
Minimum Air Flow
700 CFM
Electrical Data
240 Volts
60 Hz
Recommended Breaker Size
60 Amps
Product Height
11 1/8 Inches
Product Width
16 1/2 Inches
Product Depth
27 Inches
Product Weight
24 Pounds
Warranty Information
Parts Warranty Learn More
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
2 Years
Heating Element Warranty
20 Years


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Product Q&A

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Product Questions Answered by Bob, the Heating Product Expert
Is there an adjustment as to what temperature the LP starts to assist the electric plenum heater?
from Minnesota 
December 23, 2015

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Electro Industries EM-WD102S5-SL1, WarmFlo Electric Plenum Duct Heater -15" Downflow, 10 kW
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