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KFUH ECO2S High Air Velocity 2 Stage Unit Heater 119425 BTU 480V 1Ph KFUH4835-1-2S1-ECM

King Electric Manufacturing
Build Time:
15 to 20 Business Days ?
Ships By:

Build Time

The product Build Time you see represented on this site is only a typical number of days the manufacturer states it needs to build the product(s) when ordered. Build times are based on business days (excludes weekends & holidays).

The build time does not include the time it will take to ship the order to you (the customer). If an order has multiple items and comes from multiple warehouses, you may receive part of your order on one day, and then receive the remaining part(s) of your order at a later date.

*Please be aware that seasonal demand of certain equipment may cause build times to run longer than what is typical.

Highly Recommended Items:

LIST: $7,913.06
Only $5,051.86

*Unit is Build to Order. Unit will be Final Sale.

*Must Have Thermostat.

*Heater is Shown With KFUH-DIFFUSER

The KFUH ECO2S High Air Velocity Unit Heater ENERGY SAVINGS meets MAXIMUM COMFORT with the ECM Motor & 2 Stage Heating The KFUH ECO2S Model adds a state of the art electronically controlled motor and 2 heating stages for added comfort and Maximum Energy Savings. The KFUH series commercial unit heater is an efficient, dependable unit heater perfectly suited for high ceiling applications such as warehouses, parking garages and docks. The 3-speed, ECM motor and blower quietly delivers large volumes of air ranging from 775 to1540 CFM minimum. With welded mounting channels on the unit, the heater may be mounted at any angle. Safety screens are provided at both the air intake and discharge aperture. The intake filter is replaceable. 

2 Stage controlled Furnaces allow you to use less energy during mild Spring and Fall temperatures. It’s like having a smaller furnace installed just for spring and fall, then when winter hits you have the reserve power of the second heating stage to fight off the cold weather. It also has the benefit of creating more even comfort temperatures


Transformer: Each unit is equipped with a heavy duty low voltage (24 Volt) transformer for the thermostat control circuit.

Heating Elements: Quick heating, long life Ni-Chrome elements are sized to provide proper watt density for maximum heat dissipation by fan-forced air convection currents.

Terminal Block: For single strike field wiring.

Low Voltage Terminal Block: For 24 Volt control.

Air Filter: Convenient access for replacement of standard 16” x 20” x 1” filter.

Motor: Energy Saving, Long life, thermally protected, permanently lubricated, direct drive ECM motor (no belts to adjust or slip). This low noise, 3 speed motor is designated for use with air conditioning capability as well as heating. Very quiet operating. 60 second fan delay.

Overcurrent Protection: 208 & 240 volt KFUH Endura Pro models have 60 amp circuit breakers with single strike terminal block. Units over 48 amps have 60 amp fusing.

Limit Control: Integral automatic high temperature limit control in each heating element bank prevents the delivery of air at unsafe temperatures. 20-35 kW use a manual reset limit control to completely shut the unit heater off should over temperature occur.

Fan Relay: Heavy duty fan relay standard with summer fan operation.

Approvals: UL (E41422)

Heater Figure Size; B



Model No.:
KFUH4835 -1 -2S1 -ECM
Made In U.S.A.:
CFM High:
1258 - 1771
Dimension Inches:
Width: 16" Depth: 43-1/2" Height: 20"
Stage 1; 23
Stage 2; 11.5
Limited Warranty:
5 Year Limited
Temperature Rise F:
62 - 88
Watts High:
Weight lbs.:
Notice: Manufacturer's products features and specifications are subject to change without notice.
California Residents: warning WARNING- This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, please visit


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