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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%International Comfort Products 1098023 1HP 4-Speed Motor 1090RPM CCW 460V 56TSpecial Price $1,184.20 Regular Price $1,314.46
-10%Nidec-US Motors LX7921 1/3HP 4-Speed Motor 1075 RPM 115VSpecial Price $287.27 Regular Price $318.87
-10%York S1-024-27845-000 1/2HP 4-Speed Motor 1075RPM 115VSpecial Price $1,015.77 Regular Price $1,127.51
-10%Regal Rexnord - Fasco D152 1/4-1/5-1/6-1/8HP 4-Speed Motor 1050 RPM 277VSpecial Price $342.31 Regular Price $379.96Out of stock- -10%Regal Rexnord - Fasco D291 1/10HP 4-Speed Double Shaft Blower Motor 115VSpecial Price $277.70 Regular Price $308.25Out of stock
- -10%Regal Rexnord - Fasco D347 1/8HP 4-Speed Motor 1550 RPM 115VSpecial Price $287.47 Regular Price $319.10
- -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 $539.23 Regular Price $598.55Out of stock
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.