When your furnace blower motor stops, the replacement has to match your system's electrical and physical specs. The four motors here split between 1/3 HP and 1/2 HP, and the right choice comes down to the horsepower your furnace needs, the voltage it runs on, and the frame and speed options your blower wheel accepts.
Quick take:
- The 1/3HP Furnace Blower Motor 110-120V 4.4A 1075RPM 4 Speeds 48 Frame 1 Phase is the lowest-priced new option and includes a 5µF/370V capacitor plus an 11-inch hold hoop.
- The Emerson K55HXCZB-6700 Furnace Blower Motor 1/3HP 115V 1075-RPM 4-Speed 1-Phase is a used motor with thermal protection that was removed from a working HVAC system.
- The 903075 1/3HP Furnace Blower Motor For Nordyne Intertherm Miller E Series 4-Speed targets Nordyne, Intertherm, and Miller E Series electric furnaces.
- The 1/2HP 115V Furnace Blower Motor 5KCP39LGS093S 5KCP39LGM301AS 5KCP39LGR668AS is the highest-priced option here, with ball bearings and thermal protection.
Listed Price Comparison
| Product | Listed Price | Price Bar |
|---|---|---|
| Emerson K55HXCZB-6700 Furnace Blower Motor 1/3HP 115V 1075-RPM 4-Speed 1-Phase | USD 92.00 | |
| 1/3HP Furnace Blower Motor 110-120V 4.4A 1075RPM 4 Speeds 48 Frame 1 Phase | USD 67.29 | |
| 903075 1/3HP Furnace Blower Motor For Nordyne Intertherm Miller E Series 4-Speed | USD 95.99 | |
| 1/2HP 115V Furnace Blower Motor 5KCP39LGS093S 5KCP39LGM301AS 5KCP39LGR668AS | USD 112.99 |
Decision Matrix
| Motor | HP and Voltage | RPM and Speeds | Consider This For |
|---|---|---|---|
| Emerson K55HXCZB-6700 | 1/3 HP, 115V | 1075 RPM, 4-speed | A 1/3 HP 115V replacement when thermal protection matters and you're okay with a used motor |
| 1/3HP Furnace Blower Motor 110-120V | 1/3 HP, 110-120V | 1075 RPM, 4-speed | Budget-minded 1/3 HP jobs that can use a 48-frame motor with a capacitor and hold hoop |
| 903075 Nordyne Intertherm Miller | 1/3 HP listed, 240V | 960 RPM, 4-speed | A replacement for Nordyne, Intertherm, or Miller E Series electric furnaces |
| 1/2HP 115V GE-compatible | 1/2 HP, 115V | 1075 RPM, 4-speed | Furnace applications that call for 1/2 HP with ball-bearing construction and thermal protection |
Product Notes
Emerson K55HXCZB-6700 Furnace Blower Motor 1/3HP 115V 1075-RPM 4-Speed 1-Phase
This 1/3 HP Emerson spins at 1075 RPM with four speeds and runs on 115V, drawing 5.1 amps. It has a gray housing and thermal protection, which helps guard against overheating. The motor is in used condition and was professionally removed from a working HVAC system after a home upgrade, so it has a little living history. Choose this one if you want a motor that was verified working before removal, along with the Emerson name and a thermal-protection feature at $92.00. The trade-off is the used condition; you're relying on the seller's statement that it worked before removal rather than a fresh out-of-box part.
1/3HP Furnace Blower Motor 110-120V 4.4A 1075RPM 4 Speeds 48 Frame 1 Phase
This new 1/3 HP motor uses a 48 frame, draws 4.4 amps, and delivers four speeds at 1075 RPM. It runs on 110-120V and comes with a 5µF/370V capacitor plus an 11-inch hold hoop, so the capacitor and mounting hoop are included in the same box. The shaft is 5.2 inches long with a 0.5-inch diameter, and it rotates clockwise or counterclockwise. For a residential furnace or duct system that fits a 48-frame motor, this is a practical, hardware-inclusive choice. The limitation is that the 48-frame size makes it a specific fit rather than a universal replacement, so you need your existing motor to match that frame.
903075 1/3HP Furnace Blower Motor For Nordyne Intertherm Miller E Series 4-Speed
This motor is aimed squarely at Nordyne, Intertherm, and Miller E Series electric furnaces, with compatible model families like E2EB and E2EH listed. It's a 4-speed motor rated at 1/3 HP and 960 RPM, finished in black with an aluminum body. For someone servicing an E Series electric furnace, a motor tied to the 903075 replacement reference is a more targeted choice than a generic 1/3 HP motor. The limitation is that fit is narrow: it is written for that specific E Series group, and the listed 240V spec should match your furnace's supply voltage before you buy.
1/2HP 115V Furnace Blower Motor 5KCP39LGS093S 5KCP39LGM301AS 5KCP39LGR668AS
This 1/2 HP motor runs on 115V at 1075 RPM with four speeds. It uses ball bearings, has thermal protection, and is listed as an OE Quality part with GE-style interchange numbers like 5KCP39LGS093S and 5KCP39LGM301AS. That makes it a direct-fit-style option for furnaces that use those part numbers. Choose it when your furnace's original motor is genuinely 1/2 HP and 115V. The main limit is that a 1/2 HP unit is only correct if your furnace's original motor is 1/2 HP; installing it where a 1/3 HP motor belongs is a mismatch.
Final Recommendation by Use Case
- Need a low-cost 1/3 HP 110-120V motor with extra hardware: the 1/3HP Furnace Blower Motor 110-120V 4.4A 1075RPM 4 Speeds 48 Frame 1 Phase at $67.29 is the smallest cash outlay and includes a capacitor and hold hoop.
- Want a 1/3 HP 115V motor with thermal protection and verified-used history: the Emerson K55HXCZB-6700 at $92.00 gives you a motor that was working before removal, as long as used condition is acceptable.
- Have a Nordyne, Intertherm, or Miller E Series furnace: the 903075 1/3HP Furnace Blower Motor at $95.99 is the only one of the four described specifically for that compatibility group.
- Need a 1/2 HP 115V replacement with GE-style part numbers: the 1/2HP 115V Furnace Blower Motor 5KCP39LGS093S at $112.99 adds ball bearings and thermal protection, provided your furnace's original motor is 1/2 HP.
Pick the motor that matches the nameplate numbers you already have, and let the listed specs - HP, voltage, RPM, and frame - be the tie-breaker.
