+1 (818) 394-9123
info@appaetechpoolsupply.com
English | Spanish | Armenian | Russian
Motor options for a wide range of residential pool and spa pump systems.
Choose the motor type, horsepower, voltage, and frame configuration your system requires.
Designed for customers replacing failed or aging pool pump motors.
Match by motor label, frame, horsepower, voltage, and existing pump requirements.
Century manufactures electric motors used across a wide range of pool and spa pump applications. From standard single-speed replacements to variable-speed motor solutions, Century gives pool owners and service professionals options for restoring or upgrading existing circulation equipment without necessarily replacing the entire pump.
Choosing the correct replacement motor requires more than matching horsepower. Frame type, voltage, service factor, speed, flange configuration, shaft design, and the existing pump wet end can all play a role in determining compatibility.
Start with the model, part number, horsepower, voltage, amperage, and other information printed on the existing motor label whenever possible.
The replacement motor must physically match the pump's mounting configuration, flange style, shaft, and seal arrangement.
Do not compare horsepower alone. Motor capacity and the requirements of the existing pump and impeller should also be considered when selecting a replacement.
Confirm the available electrical supply and whether the existing system requires a single-speed, two-speed, or variable-speed motor.
Your existing motor label contains much of the information needed to identify a replacement. Before removing the motor, take a clear photo of the complete nameplate and use the fields below to locate the most important specifications.
This is a simplified example for identification purposes. The location, terminology, and arrangement of specifications can vary between motor models and generations.
Usually the best starting point for identifying the existing motor. Record the complete model or catalog number exactly as it appears on the label.
The HP rating identifies the motor's nominal horsepower. Horsepower is important, but it should not be used by itself to select a replacement.
Often shown as “SF,” the service factor should be considered along with the horsepower rating when comparing the capacity of the existing motor and its replacement.
The voltage field identifies the electrical supply the motor is designed to use. Confirm the replacement is appropriate for the electrical configuration at the equipment pad.
Frame information helps identify the physical mounting configuration. This is critical because the replacement motor must properly connect to the existing pump wet end.
RPM and speed information help identify how the existing motor operates and whether the system uses a single-speed, two-speed, or variable-speed configuration.
Photograph the complete motor label and the pump it is attached to before disassembly. Having both the motor information and pump model available makes it much easier to verify a replacement and reduces the chance of ordering a motor with the wrong electrical or mounting configuration.
The best replacement is the motor that matches both your existing pump and its electrical requirements. Instead of shopping by horsepower alone, work through these four checks before choosing a Century replacement motor.
Two motors can display the same horsepower and still be completely different replacements. The motor must physically fit the pump, provide the appropriate capacity, and work with the electrical system supplying the equipment.
Locate the model or catalog number on the existing motor label. If it is still readable, this is usually the strongest starting point for finding a replacement.
Model / Catalog Number
Confirm the motor frame, mounting style, flange, and shaft configuration so the replacement can correctly attach to the existing pump wet end.
Frame • Flange • Shaft
Compare horsepower together with service factor and the requirements of the existing pump. Do not assume that two motors with the same HP label provide the same replacement.
HP • Service Factor
Verify the electrical supply and determine whether the application calls for single-speed, two-speed, or compatible variable-speed operation.
Voltage • Speed • Controls
Century offers replacement motor solutions for traditional pool pump applications as well as variable-speed upgrades. The right family depends on the existing pump, mounting configuration, electrical requirements, and whether you want to maintain the original operating style or upgrade to variable-speed control.
Century's VGreen family is designed around variable-speed replacement and retrofit applications. These motors provide an alternative to replacing an entire pump when the existing wet end is still suitable for continued service.
Built for pool pump retrofit applications where a traditional single-speed motor is being replaced with variable-speed operation.
A larger VGreen platform designed for applications requiring greater motor capacity while retaining variable-speed control.
Century's newer variable-speed replacement platform is designed to simplify installation and programming for compatible pool filter pump applications.
Traditional fixed-speed replacement motors for compatible pool and spa pump applications. Selection should be based on frame, horsepower, service factor, voltage, shaft, and pump compatibility.
Designed for systems that operate at two predetermined motor speeds. These replacements require proper matching to the existing pump, controls, wiring, and motor configuration.
Variable-speed replacement motors allow pump speed to be adjusted around circulation requirements rather than running continuously at one fixed speed.
Before selecting a Century replacement, verify the existing motor label, pump model, frame and flange style, horsepower, service factor, voltage, and speed requirements. Motors that appear similar can use different mounting or electrical configurations.
Horsepower and voltage tell only part of the story. The replacement motor must also physically connect to the existing pump. Frame designation, flange style, shaft configuration, and mounting dimensions should all be confirmed before ordering.
Two pool motors can have similar horsepower and electrical specifications but use different mounting configurations. Always identify the existing motor frame and pump connection before selecting a replacement.
Century offers pool and spa replacement motors in 48-frame configurations. These motors use a smaller motor-body platform than many 56-frame designs, but the complete mounting arrangement still needs to match the existing pump.
Frame designation, flange, shaft, HP, service factor and voltage.
56-frame motors are another common size within Century's pool and spa replacement lineup. Do not assume that all 56-frame motors mount the same way — the suffix and flange configuration remain important.
Complete frame code and mounting configuration before ordering.
56Y is commonly found on square-flange pool pump motors. Century currently offers multiple 56Y square-flange models, making this an important configuration to identify when replacing an existing pool pump motor.
Confirm that the existing pump uses a compatible square-flange mounting arrangement.
A square-flange motor uses a square mounting plate at the pump end of the motor. Century's pool and spa catalog includes dedicated square-flange replacement motors, including current 56Y configurations.
C-face motors use a different mounting face and bolt pattern than square-flange designs. Century manufactures pool and spa replacement motors in C-face configurations, so the existing pump connection should be identified before choosing between the two styles.
Treat the complete motor designation as important information. Frame size, frame suffix, flange style, shaft configuration, horsepower, service factor and electrical specifications should all be considered together when selecting a replacement.
When a pool pump motor fails, you may be able to replace it with another motor that operates similarly to the original or use the repair as an opportunity to move to a compatible variable-speed solution. The right choice depends on the existing pump, electrical system, controls, installation, and how you want the pump to operate.
A single-speed motor runs at its designed operating speed whenever the pump is switched on. For compatible systems, this can provide a straightforward way to restore an existing pump without changing how the circulation system is normally operated.
The motor runs at a fixed operating speed when energized, similar to many traditional pool pump installations.
Often appropriate when the goal is to restore an existing compatible single-speed pump without changing the operating strategy of the system.
Depending on the installation, a replacement may continue to use the existing timer, relay, or switching arrangement.
There are no programmed circulation speeds to configure because the pump operates at one designed speed.
Consider single speed when the existing system is designed around fixed-speed operation and the goal is a compatible, like-for-like motor replacement.
A compatible variable-speed replacement allows motor speed to change based on the circulation task rather than operating at one fixed speed throughout the entire pump schedule.
Different speeds can be used for circulation, filtration, heating, water features, or other compatible applications.
Compatible Century variable-speed platforms can provide onboard programming and scheduling options rather than relying solely on simple on/off operation.
When the hydraulic system permits it, everyday filtration can often be performed at a lower motor speed than tasks requiring maximum flow.
Century VGreen platforms are designed for compatible replacement and retrofit applications where retaining the existing pump wet end makes sense.
Consider variable speed when the existing pump is compatible and you want greater control over circulation speeds and operating schedules.
Start by looking for a compatible single-speed replacement that matches the existing motor and pump.
Consider a compatible variable-speed replacement platform.
A motor-only replacement may allow you to retain the existing wet end rather than replacing the complete pump.
First identify the motor label, frame, flange, HP, service factor and voltage before deciding which motor type to use.
Verify how the existing automation controls the pump before selecting a replacement, especially when changing motor type.
Use the existing pump model and motor nameplate to verify the replacement before ordering.
The existing pump, frame and flange configuration, shaft, horsepower requirements, electrical supply, controls, and installation all need to be compatible with the selected motor. Verify the complete application before changing from a traditional single-speed motor to a variable-speed replacement.
A replacement motor should be selected as a complete match to the pump and electrical system — not by horsepower alone. Use the guide below to verify the most important physical and electrical requirements before ordering.
A replacement can have the same horsepower as the existing motor and still be incorrect for the pump. Frame, flange, shaft, electrical requirements, service factor, speed, and pump application should all be considered together.
Identify the complete pump model or wet-end series before selecting the motor.
The pump determines the mounting, shaft, impeller load, seal arrangement, and motor configuration required.
Match the frame size and suffix shown on the existing motor or confirmed for the pump application.
Frame information affects the physical motor size and the mounting arrangement used with the pump.
Confirm how the motor physically attaches to the pump housing or seal plate.
A motor with the wrong flange style may have similar electrical specifications but will not mount correctly to the pump.
Confirm that the shaft configuration is correct for the existing impeller and pump design.
The wrong shaft configuration can prevent proper impeller installation or alignment.
Compare the replacement motor capacity to the original motor and the requirements of the existing pump.
Motors with the same nominal horsepower may have different service factors or total operating capacities.
Review the service factor together with the motor's horsepower and pump requirements.
Service factor can help explain why two motors with similar horsepower labels may not represent the same replacement.
Verify that the selected replacement supports the electrical supply available at the pump.
The motor must be configured and wired for the appropriate supply voltage.
Confirm how the existing motor is operated and how the replacement will interact with timers, relays, or automation.
Changing motor type may change how the pump is wired, scheduled, or controlled.
If the existing Century model is still available, matching the exact motor model is typically the simplest starting point. Still verify that the pump has not been modified with a different impeller, voltage, or motor configuration.
Do not select a new motor based only on the closest horsepower listing. Use the original motor label and pump model to identify a current replacement with the correct frame, flange, shaft, electrical, and operating characteristics.
Treat a variable-speed retrofit as a compatibility check rather than an automatic replacement. Confirm the wet end, frame, mounting, electrical supply, existing controls, and motor capacity before making the change.
Take clear photos of the existing motor label and the pump model information before removing the motor. Those two pieces of information provide the strongest starting point for identifying frame, flange, horsepower, voltage, speed, and application compatibility.
Not every motor replacement starts with the same problem. Sometimes the motor has completely failed, while other replacements begin with excessive noise, corrosion, an obsolete model, or a planned variable-speed upgrade. Start with the situation that best matches your equipment.
If the existing pump wet end is still in serviceable condition, replacing only the motor may restore the pump without requiring replacement of the complete pump assembly.
Motor model, pump model, frame, HP, service factor and voltage.
Increasing bearing noise, grinding, or other unusual motor sounds can indicate wear. Determine whether the issue is actually within the motor before purchasing a replacement.
Confirm the noise originates from the motor rather than the pump wet end or debris.
An older motor number may no longer be available even though the pump itself remains serviceable. A current replacement should be selected using the original specifications and the requirements of the pump.
Choose the closest-looking motor based only on horsepower.
If the existing pump wet end is compatible, a variable-speed replacement motor may provide an alternative to replacing the entire pump while adding programmable motor-speed control.
Wet end, frame, flange, electrical supply, motor capacity and control requirements.
Severe exterior corrosion, water intrusion, or electrical damage may make motor replacement necessary. The cause of the damage should also be addressed before installing the new motor.
Equipment-pad drainage, leaks, shaft seal condition and electrical connections.
When the motor label can no longer be read, the pump manufacturer, pump model, frame configuration, flange, shaft, impeller, and electrical system become especially important for identification.
The pump model and clear photos of the motor, mounting area and equipment label.
A pool pump motor replacement often involves more than the motor
itself. Because the pump must be opened and the impeller removed
during many motor replacements, seals and other pump-specific
components should be inspected and replaced when appropriate.
Century supplies the motor, but the sealing components that connect
the motor to the wet end are generally selected according to the
pump manufacturer and pump model. Identify both the motor and pump
before ordering the complete set of replacement parts.
The correct seal kit is determined by the pump application —
not simply by the Century motor model.
Match the new motor to the existing pump using the motor model,
frame and flange, horsepower, service factor, voltage, shaft,
and speed requirements.
The mechanical shaft seal helps prevent pool water from reaching
the motor shaft and bearing area. A new seal is commonly installed
when the motor and impeller are removed.
Inspect the pump housing, seal plate, diffuser, and other
accessible O-rings or gaskets for flattening, cracking,
deterioration, or leakage.
The existing impeller should be inspected for wear or damage and
confirmed to be appropriate for the selected replacement motor
and pump configuration.
Inspect the diffuser, diffuser O-ring, or gasket while the pump
is open. These parts vary by pump manufacturer and model.
Check the seal plate, bolts, fasteners, threads, and mounting
surfaces for damage, corrosion, cracking, or other conditions
that could affect proper reassembly.
A fresh shaft seal helps protect the new motor from leakage
through the pump shaft area.
Replace worn, flattened, cracked, or deteriorated sealing
components before reassembling the pump.
Seal kits and internal pump components are normally matched
to the pump model rather than the motor model alone.
Water leaking through the shaft-seal area can reach the motor and
contribute to corrosion or bearing damage. When replacing a failed
motor, inspect the pump for evidence of leakage and correct the cause
before returning the equipment to service.
Complete the Repair
Parts Needed When Replacing a Motor
Before You Start
Motor + Pump Parts Work Together
Important
01
Primary Component
Replacement Motor
02
Common Replacement Item
Shaft Seal
03
Inspect During Disassembly
Housing O-Ring / Gasket
04
Verify Compatibility
Impeller
05
Pump-Specific
Diffuser & Diffuser Seal
06
Inspect Before Reassembly
Seal Plate & Hardware
Usually Replace
Shaft Seal
Inspect Carefully
O-Rings & Gaskets
Verify Before Ordering
Pump Model
Don't Install a New Motor Behind a Leaking Shaft Seal
When the wet end of a pool pump is still serviceable, replacing the motor can provide an alternative to replacing the complete pump. Century offers pool and spa motor solutions designed around both traditional replacement applications and modern variable-speed operation.
A failed motor does not automatically mean the complete pool pump needs to be discarded. When the pump housing, wet end, impeller, and other components remain suitable for continued service, a correctly matched replacement motor can allow the existing pump assembly to remain in operation.
Match the motor to the pump application, frame, flange, shaft, electrical supply, and operating requirements.
Century's pool and spa motor lineup provides replacement configurations for a variety of pump applications, allowing the motor to be matched around the requirements of the existing equipment.
Motor ReplacementCentury's VGreen platforms provide variable-speed solutions for compatible retrofit applications, allowing some existing pump wet ends to be paired with modern programmable motor operation.
VGreenPool pumps do not all use the same motor connection. Century replacement options span multiple frame and mounting configurations so the motor can be selected around the physical requirements of the pump.
Frame & FlangeCentury is part of Regal Rexnord's broader electric-motor portfolio, giving the brand a foundation centered specifically around electric motors, controls, and power-efficiency technologies.
Motor ExpertiseWhen the wet end of a pool pump is still serviceable, replacing the motor can provide an alternative to replacing the complete pump. Century offers pool and spa motor solutions designed around both traditional replacement applications and modern variable-speed operation.
A failed motor does not automatically mean the complete pool pump needs to be discarded. When the pump housing, wet end, impeller, and other components remain suitable for continued service, a correctly matched replacement motor can allow the existing pump assembly to remain in operation.
Match the motor to the pump application, frame, flange, shaft, electrical supply, and operating requirements.
Century's pool and spa motor lineup provides replacement configurations for a variety of pump applications, allowing the motor to be matched around the requirements of the existing equipment.
Motor ReplacementCentury's VGreen platforms provide variable-speed solutions for compatible retrofit applications, allowing some existing pump wet ends to be paired with modern programmable motor operation.
VGreenPool pumps do not all use the same motor connection. Century replacement options span multiple frame and mounting configurations so the motor can be selected around the physical requirements of the pump.
Frame & FlangeCentury is part of Regal Rexnord's broader electric-motor portfolio, giving the brand a foundation centered specifically around electric motors, controls, and power-efficiency technologies.
Motor ExpertiseA pool pump is a combination of an electric motor and a hydraulic wet end. Understanding which components belong to each side makes troubleshooting easier and helps prevent a pump-side problem from damaging a replacement motor.
The motor provides the rotational power that drives the pump. Motor-related service concerns are generally electrical or mechanical rather than hydraulic.
Transfers motor rotation to the pump impeller.
Support smooth shaft rotation. Unusual grinding or bearing noise should be investigated.
Wiring, terminals, controls, and other electrical components vary according to the motor design.
Keep the motor area clear and avoid blocking ventilation or cooling features provided by the motor design.
These parts are normally selected according to the pump manufacturer and pump model rather than the Century motor model itself.
Creates the seal around the rotating shaft where the motor connects to the wet end.
Attaches to the motor shaft and moves water through the pump.
Works with the impeller and pump housing as part of the hydraulic system.
Seal the pump housing and other wet-end connections against water leakage.
Not sure which Century motor replaces your existing unit? Send us the information from your motor and pump and our team can help narrow down the correct replacement. The more information you provide, the easier it is to verify the motor's physical, electrical, and pump compatibility before you order.
Start with the label on your existing motor and the model number of your pool pump. Record the motor model or catalog number, horsepower, service factor, voltage, frame, and speed. The pump model is also importins because the replacement motor must physically and mechanically match the existing wet end.
Yes, in many cases. The pump housing, wet end, impeller, and other major components are still in serviceable condition, replacing only the motor may be the option. Compatibility should be confirmed before ordering because the new motor may be an option. Compatibility should be confirmed before ordering because the new motor must match the pump's mounting, shaft, electrical supply, and existing controls before upgrading.
Potentially. Century's VGreen motors are designed for compatible variable speed replacement and retrofit applications. However, a variable speed motor should not automatically be treated as a drop in replacement. Verify the pump end, frame and flange, motor capacity, voltage, electrical supply, and existing controls before upgrading.
These terms describe deifferent motor mounting configurations. A square flange motor uses a square mounting flange at the pump end, while a C face motor uses a different mounting face and bolt arrangement. Even if two motors have similar horsepower and voltage, the wrong flange configuration may prevent the motor from mounting to your pump correctly.
No. Horsepower is only one variable when considering a replacement motor. You should also consider service factor, frame and flange configuration, shaft, voltage, motor speed, pump model, and electrical requirements. two motors showing the same nominal horsepower are not necessarily interchangeable.
A new mechanical shaft seal is commonly installed during a pool pump motor replacement because the pump and impeller are already being disassembled. The correct shaft seal is generally determined by the pump manufacturer and pump model, not simply by the Century motor number. Other accessible O-rings and gaskets should also be inspected during the repair.
A discontinued motor can often have a current replacement, but don't choose a new motor simply because the horsepower looks similar. Use the original motor specifications together with the pump model to identify a replacement with the appropriate frame, flange, shaft, voltage, capacity, and operating configuration.
Send a clear photo of the entire motor label, the pump manufacturer and model number, and a few photos showing the motor and pump assembly. If the label is readable, make sure the model number, horsepower, service factor, voltage, frame, and other specifications are visible. This gives our team the best starting point for identifying a compatible replacement.