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Energy Saving Electric Furnace
kW Range: 3.8 to 34.5 kW
Voltage: 208 / 240 / 480V
Phase: 1Ø / 3Ø
Control: Standard 24V Control
Heating: ECO2S 2-Stage Heating When Possible
Motor: Energy Efficient ECM Motor
Warranty: 5 Year Limited

Energy saving electric furnace with ECM motor and ECO2S 2 stage comfort heating for residential, commercial, and process heating applications.
The KF / KFS ECO2S Series electric furnace combines an energy efficient ECM motor with staged electric heat for improved comfort and reduced energy use where 2 stage operation applies. The compact, quiet cabinet supports upflow, downflow, horizontal, and vertical installation, making the furnace adaptable for residential, commercial, and process heating applications. Heavy duty open coil elements, sequenced heating, 24V controls, fan only relay, dual inlet blower, sound insulated construction, and mobile home approval support dependable long term performance.
| MODEL | BTUH | VOLTS | PHASE | Kw | AMPS | STAGE 1 | STAGE 2 | # OF ELEMENTS | INTERNAL CB | MOTOR | MOTOR FLA | SIZE | WT. (lbs) | REVIT | Purchase |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KFS2004-1-ECM | 12,799 | 208 | 1 | 3.8 | 18 | 4 kW | *N/A | 1 | 60 | 1/3HP | 2.9 | Fig. A | 57 | Revit | Buy Now Close |
| KFS2005-1-ECM | 17,065 | 208 | 1 | 5 | 24 | 5 kW | *N/A | 1 | 60 | 1/3HP | 2.9 | Fig. A | 57 | Revit | Buy Now Close |
| KFS2008-1-2S1-ECM | 27,304 | 208 | 1 | 8 | 36 | 4.25 kW | 3.75 kW | 2 | 60 | 1/3HP | 2.9 | Fig. A | 57 | Revit | Buy Now Close |
| KFS2010-1-2S1-ECM | 34,130 | 208 | 1 | 10 | 48 | 5 kW | 5kW | 2 | 60 | 1/3HP | 2.9 | Fig. A | 65 | Revit | Buy Now Close |
| KFS2012-1-2S1-ECM | 39,238 | 208 | 1 | 11.5 | 55.3 | 7.5 kW | 4 kW | 3 | 60 | 1/3HP | 2.9 | Fig. A | 74 | Revit | Buy Now Close |
| KFS2015-1-2S1-ECM | 51,195 | 208 | 1 | 15 | 72 | 10 kW | 5 kW | 3 | 60+60 | 1/3HP | 2.9 | Fig. A | 74 | Revit | Buy Now Close |
| KFS2020-1-2S1-ECM | 68,260 | 208 | 1 | 20 | 96 | 10 kW | 10kW | 4 | 60+60 | 1/2HP | 2.9 | Fig. B | 76 | Revit | Buy Now Close |
| KFS2025-1-2S1-ECM | 85,325 | 208 | 1 | 25 | 120 | 15 kW | 10 kW | 5 | 60+60+60 | 3/4HP | 2.9 | Fig. B | 81 | Revit | Buy Now Close |
| KFS2030-1-2S1-ECM | 102,390 | 208 | 1 | 30 | 144 | 20 kW | 10 kW | 6 | 60+60+60 | 3/4HP | 2.9 | Fig. B | 85 | Revit | Buy Now Close |
| KFS2404-1-ECM | 13,652 | 240 | 1 | 4 | 17 | 4 kW | *N/A | 1 | 60 | 1/3HP | 2.7 | Fig. A | 57 | Revit | Buy Now Close |
| KFS2405-1-ECM | 17,065 | 240 | 1 | 5 | 21 | 5 kW | *N/A | 1 | 60 | 1/3HP | 2.7 | Fig. A | 57 | Revit | Buy Now Close |
| KFS2408-1-2S1-ECM | 27,304 | 240 | 1 | 8 | 33 | 4 kW | 4 kW | 2 | 60 | 1/3HP | 2.7 | Fig. A | 57 | Revit | Buy Now Close |
| KFS2410-1-2S1-ECM | 34,130 | 240 | 1 | 10 | 42 | 5kW | 5 kW | 2 | 60 | 1/3HP | 2.7 | Fig. A | 65 | Revit | Buy Now Close |
| KFS2412-1-2S1-ECM | 40,956 | 240 | 1 | 12 | 50 | 5.75 kW | 5.75 kW | 2 | 60 | 1/3HP | 2.7 | Fig. A | 74 | Revit | Buy Now Close |
| KFS2415-1-2S1-ECM | 51,195 | 240 | 1 | 15 | 63 | 10 kw | 5 kW | 3 | 60+60 | 1/3HP | 2.7 | Fig. A | 74 | Revit | Buy Now Close |
| KFS2418-1-2S1-ECM | 58,874 | 240 | 1 | 17.3 | 72 | 11.5 kw | 5.75 kW | 3 | 60+60 | 1/3HP | 2.7 | Fig. A | 74 | Revit | Buy Now Close |
| KFS2420-1-2S1-ECM | 68,260 | 240 | 1 | 20 | 83 | 10kw | 10 kW | 4 | 60+60 | 1/2HP | 3.9 | Fig. B | 76 | Revit | Buy Now Close |
| KFS2425-1-2S1-ECM | 85,325 | 240 | 1 | 25 | 104 | 15 kW | 10 kW | 5 | 60+60+60 | 1/2HP | 3.9 | Fig. B | 81 | Revit | Buy Now Close |
| KFS2430-1-2S1-ECM | 102,390 | 240 | 1 | 30 | 125 | 20 kW | 10 kW | 6 | 60+60+60 | 3/4HP | 3.9 | Fig. B | 85 | Revit | Buy Now Close |
| KFS2435-1-2S1-ECM | 117,749 | 240 | 1 | 34.5 | 144 | 23 kW | 11.5 kW | 6 | 60+60+60 | 3/4HP | 3.9 | Fig. B | 85 | Revit | Buy Now Close |
| KF4804-1-ECM | 13,652 | 480 | 1 | 4 | 8 | 4 kW | *N/A | 1 | NO | 1/3HP | 0.7 | Fig. A | 57 | Revit | Buy Now Close |
| KF4805-1-ECM | 17,065 | 480 | 1 | 5 | 10 | 5 kW | *N/A | 1 | NO | 1/3HP | 0.7 | Fig. A | 57 | Revit | Buy Now Close |
| KF4808-1-2S1-ECM | 27,304 | 480 | 1 | 8 | 17 | 4 kW | 4 kW | 2 | NO | 1/3HP | 0.7 | Fig. A | 57 | Revit | Buy Now Close |
| KF4810-1-2S1-ECM | 34,130 | 480 | 1 | 10 | 21 | 5 kW | 5 kW | 2 | NO | 1/3HP | 0.7 | Fig. A | 65 | Revit | Buy Now Close |
| KF4812-1-2S1-ECM | 40,956 | 480 | 1 | 12 | 25 | 8 kW | 4 kW | 3 | NO | 1/3HP | 0.7 | Fig. A | 74 | Revit | Buy Now Close |
| KF4815-1-2S1-ECM | 51,195 | 480 | 1 | 15 | 31 | 10 kW | 5 kW | 3 | NO | 1/3HP | 0.7 | Fig. A | 74 | Revit | Buy Now Close |
| KF4818-1-2S1-ECM | 58,874 | 480 | 1 | 17.3 | 36 | 11.5 kW | 5.75 kW | 3 | NO | 1/3HP | 0.7 | Fig. A | 74 | Revit | Buy Now Close |
| KF4820-1-2S1-ECM | 68,260 | 480 | 1 | 20 | 42 | 15 kW | 5 kW | 4 | NO | 1/2HP | 1.1 | Fig. B | 76 | Revit | Buy Now Close |
| KF4825-1-2S1-ECM | 85,325 | 480 | 1 | 25 | 52 | 15 kW | 10 kW | 5 | NO | 1/2HP | 1.1 | Fig. B | 81 | Revit | Buy Now Close |
| KF4830-1-2S1-ECM | 102,390 | 480 | 1 | 30 | 63 | 20 kW | 10 kW | 6 | NO | 3/4HP | 1.1 | Fig. B | 85 | Revit | Buy Now Close |
| KF4835-1-2S1-ECM | 117,749 | 480 | 1 | 34.5 | 72 | 23 kW | 11.5 kW | 6 | NO | 3/4HP | 1.1 | Fig. B | 85 | Revit | Buy Now Close |
| MODEL | BTUH | VOLTS | PHASE | Kw | AMPS | STAGE 1 | STAGE 2 | # OF ELEMENTS | INTERNAL CB | MOTOR | MOTOR FLA | SIZE | WT. (lbs) | REVIT | Purchase |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KFS2005-3-ECM | 17,065 | 208 | 3 | 5 | 14 | 5 kW | N/A | 1 | 60 | 1/3HP | 2.9 | Fig. A | 57 | Revit | Buy Now Close |
| KFS2007-3-2S3-ECM | 25,598 | 208 | 3 | 7.5 | 21 | 3.75 kW | 3.75 kW | 2 | 60 | 1/3HP | 2.9 | Fig. A | 57 | Revit | Buy Now Close |
| KFS2010-3-2S3-ECM | 34,130 | 208 | 3 | 10 | 28 | 5 kW | 5 kW | 2 | 60 | 1/3HP | 2.9 | Fig. A | 65 | Revit | Buy Now Close |
| KFS2012-3-2S3-ECM | 39,238 | 208 | 3 | 11.5 | 32 | 7.5 kW | 4 kW | 3 | 60 | 1/3HP | 2.9 | Fig. A | 74 | Revit | Buy Now Close |
| KFS2015-3-2S3-ECM | 51,195 | 208 | 3 | 15 | 42 | 10 kW | 5 kW | 3 | 60 | 1/3HP | 2.9 | Fig. A | 74 | Revit | Buy Now Close |
| KFS2020-3-2S3-ECM | 68,260 | 208 | 3 | 20 | 56 | 15 kW | 5 kW | 4 | 60+60 | 1/2HP | 4.2 | Fig. B | 76 | Revit | Buy Now Close |
| KFS2025-3-2S3-ECM | 85,325 | 208 | 3 | 25 | 69 | 15 kW | 10 kW | 5 | 60+60 | 3/4HP | 4.2 | Fig. B | 81 | Revit | Buy Now Close |
| KFS2030-3-2S3-ECM | 102,390 | 208 | 3 | 30 | 83 | 15 kW | 15 kW | 6 | 60+60 | 3/4HP | 4.2 | Fig. B | 85 | Revit | Buy Now Close |
| KFS2405-3-ECM | 17,065 | 240 | 3 | 5 | 12 | 5 kW | *N/A | 1 | 60 | 1/3HP | 2.7 | Fig. A | 57 | Revit | Buy Now Close |
| KFS2410-3-2S3-ECM | 34,130 | 240 | 3 | 10 | 24 | 5 kW | 5 kW | 2 | 60 | 1/3HP | 2.7 | Fig. A | 65 | Revit | Buy Now Close |
| KFS2412-3-2S3-ECM | 40,956 | 240 | 3 | 12 | 29 | 6.5 kW | 5.5 kW | 3 | 60 | 1/3HP | 2.7 | Fig. A | 74 | Revit | |
| KFS2415-3-2S3-ECM | 51,195 | 240 | 3 | 15 | 36 | 10 kW | 5 kW | 3 | 60 | 1/3HP | 2.7 | Fig. A | 74 | Revit | Buy Now Close |
| KFS2418-3-2S3-ECM | 58,874 | 240 | 3 | 17.3 | 42 | 12.3 kW | 5 kW | 3 | 60 | 1/3HP | 2.7 | Fig. A | 74 | Revit | |
| KFS2420-3-2S3-ECM | 68,260 | 240 | 3 | 20 | 48 | 15 kW | 5 kW | 4 | 60+60 | 1/2HP | 3.9 | Fig. B | 76 | Revit | Buy Now Close |
| KFS2425-3-2S3-ECM | 85,325 | 240 | 3 | 25 | 60 | 15 kW | 10 kW | 5 | 60 | 1/2HP | 3.9 | Fig. B | 81 | Revit | Buy Now Close |
| KFS2430-3-2S3-ECM | 102,390 | 240 | 3 | 30 | 72 | 15kW | 15 kW | 6 | 60+60 | 3/4HP | 3.9 | Fig. B | 85 | Revit | Buy Now Close |
| KFS2435-3-2S3-ECM | 117,749 | 240 | 3 | 34.5 | 83 | 17.25 kW | 17.25 kW | 6 | 60+60 | 1/2HP | 3.9 | Fig. B | 85 | Revit | Buy Now Close |
| KF4805-3-ECM | 17,065 | 480 | 3 | 5 | 6 | 5 kW | *N/A | 1 | NO | 1/3HP | 0.7 | Fig. A | 57 | Revit | Buy Now Close |
| KF4810-3-2S3-ECM | 34,130 | 480 | 3 | 10 | 12 | 5 kW | 5 kW | 2 | NO | 1/3HP | 0.7 | Fig. A | 65 | Revit | Buy Now Close |
| KF4812-3-ECM | 40,956 | 480 | 3 | 12 | 14 | 12 kW | *N/A | 3 | NO | 1/3HP | 0.7 | Fig. A | 74 | Revit | |
| KF4815-3-2S3-ECM | 51,195 | 480 | 3 | 15 | 18 | 10 kW | 5 kW | 3 | NO | 1/3HP | 0.7 | Fig. A | 74 | Revit | Buy Now Close |
| KF4818-3-ECM | 58,874 | 480 | 3 | 17.3 | 21 | 17.3 kW | *N/A | 3 | NO | 1/3HP | 0.7 | Fig. A | 74 | Revit | Buy Now Close |
| KF4820-3-2S3-ECM | 68,260 | 480 | 3 | 20 | 24 | 15 kW | 5 kW | 4 | NO | 1/2HP | 1.1 | Fig. B | 76 | Revit | Buy Now Close |
| KF4825-3-2S3-ECM | 85,325 | 480 | 3 | 25 | 30 | 15 kW | 10 kW | 5 | NO | 1/2HP | 1.1 | Fig. B | 81 | Revit | Buy Now Close |
| KF4830-3-2S3-ECM | 102,390 | 480 | 3 | 30 | 36 | 20 kW | 10 kW | 6 | NO | 3/4HP | 1.1 | Fig. B | 85 | Revit | Buy Now Close |
| KF4835-3-2S3-ECM | 117,749 | 480 | 3 | 34.5 | 42 | 17.25 kW | 17.25 kW | 6 | NO | 3/4HP | 1.1 | Fig. B | 85 | Revit |
| MODEL | UPC | DESCRIPTION | WEIGHT(LBS.) | Purchase |
|---|---|---|---|---|
| KFS-4PJB | 20185 | * 4-Pole Jumper Bar - 15kW to 20kW | 0.05 | Buy Now Close |
| KFS-6PJB | 20184 | * 6-Pole Jumper Bar - 25kW to 30kW | 0.05 | Buy Now Close |
| KFSSB | 20182 | 1" Discharge Sub Base - 18"x14"x1" | 5 | Buy Now Close |
| KFS-Q02C | 20181 | Small Cooling Cabinet 16" L x22" Wx19 1/2" H-13 lbs. | 25 | Buy Now Close |
| KFS-Q03C | 20180 | Large Cooling Cabinet 18" L x22" Wx19 1/2" H-15 lbs. | 25 | Buy Now Close |
| KFS-DT | 20186 | Transition From 14" x 14" Outlet to 12" Round | 25 | Buy Now Close |
| ADD SUFFIX: | DESCRIPTION |
|---|---|
| -DS32 | 32 Amp, 3-Pole Disconnect Switch w/ Padlock Provision |
| -DS63 | 63 Amp, 3-Pole Disconnect Switch w/ Padlock Provision |
| -DS80 | 80 Amp, 3-Pole Disconnect Switch w/ Padlock Provision |
| -DS100 | 100 Amp, 3-Pole Disconnect Switch w/ Padlock Provision |
| -3/4HP | Sub 3/4HP Motor for 20kW & 25kW Models Only |
Furnish and install King Electric KF / KFS ECO2S Series electric furnace. Furnace shall include ECM motor, 24V control circuit, sequenced heating elements, NiChrome heating elements, inlet filter, sound insulated welded cabinet, fan only relay, and mounting provisions for upflow, downflow, horizontal, or vertical installation. Furnace shall provide 2 stage heating where applicable.


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