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4-speed motors provide adjustable airflow control in furnaces and air handlers. Designed for multi-speed operation, these motors improve comfort, enhance energy efficiency, and support consistent heating and cooling performance in residential and light commercial HVAC systems.
-10%Century Motors 7FD6001A 3/4-1/5HP 4-Speed Reversable Motor 1075 RPM 277VSpecial Price $210.36 Regular Price $233.50
-10%York S1-024-27667-000 3/4HP 4-Speed Motor 1050 RPM 240V 48 FrameSpecial Price $405.99 Regular Price $450.65Out of stock
-10%Amana-Goodman 11119201S 1/2HP 4-Speed Motor 1060 RPM CCW 208-230VSpecial Price $293.95 Regular Price $326.28
-10%International Comfort Products 1054630 1/4HP 4-Speed Motor 1000 RPM 208-230V/1-PHSpecial Price $468.90 Regular Price $520.48Out of stock
-10%Lennox 32663 1-Phase 4-Speed Motor 1/3HP 1075RPM 115V CCWSpecial Price $359.57 Regular Price $399.12- -10%Amana-Goodman 10759415SP 3/4HP 4-Speed Motor 1034 RPM 115V/1PHSpecial Price $309.43 Regular Price $343.47
- -10%York S1-024-27607-000 1/3HP 4-Speed Motor 925 RPM 208-230VSpecial Price $401.70 Regular Price $445.88Out of stock
- -10%Daikin-McQuay JWDQ5780 1/4HP 4-Speed Motor 1075 RPM 265VSpecial Price $280.06 Regular Price $310.87
- -10%International Comfort Products 1184660 1/2HP 4-Speed Motor 1075 RPM 115VSpecial Price $275.78 Regular Price $306.11
4-Speed Motors Replacement Parts for Air & Cooling Systems
A 4-speed motor is a multi-tap blower motor engineered to deliver variable airflow settings within HVAC systems. By offering selectable speed configurations, it allows technicians to match airflow output to system requirements, improving comfort control and operational efficiency. A common configuration, such as a 1/3 hp 4-speed motor, is widely used in residential air handlers and packaged units.
These motors are typically installed in furnaces, air handlers, and fan coil units. A 4-speed furnace motor regulates airflow across the heat exchanger during heating mode and across the evaporator coil during cooling mode. Proper airflow is essential for maintaining temperature balance, preventing coil freeze-up, and ensuring safe furnace operation.
Signs of wear include humming without rotation, overheating, reduced airflow, excessive vibration, and tripped thermal overloads. Worn bearings, damaged windings, or failed run capacitors can strain the blower assembly and increase energy consumption. Key replacement components include run capacitors, blower wheels, motor mounts, shaft adapters, fan relays, and control boards to restore full system functionality.
At PartsHnC, we offer multi-speed PSC motors, direct-drive blower motors, OEM replacement assemblies, capacitor kits, mounting brackets, and blower housings from trusted brands like Genteq, Century, Fasco, US Motors, Carrier, Trane, and Lennox, featuring thermally protected windings, reversible rotation, and multiple RPM configurations.
FAQs
What is the difference between a 4-speed motor and a variable-speed motor?
A 4-speed motor has fixed selectable speed taps, while a variable-speed motor uses electronic controls to automatically adjust airflow based on demand.
How do I know if my furnace blower motor is failing?
Common signs include weak airflow, unusual noises, overheating, frequent cycling, or the motor failing to start despite power supply.
Can I replace a 1/3 hp 4 speed motor with a different horsepower?
Replacement motors must match system voltage, horsepower, RPM, and frame size to ensure proper airflow and prevent equipment damage.
Why is my 4-speed furnace motor not changing speeds?
The issue may be caused by incorrect wiring, a faulty control board, or a damaged speed tap connection within the motor.
What happens if a blower motor runs at the wrong speed?
Incorrect speed settings can cause overheating, reduced efficiency, coil icing, or improper heat distribution throughout the HVAC system.