Swimables 1HP Impeller for Pentair WhisperFlo Pumps | 073128 SW-21-003
Restore Your Pump’s Performance with Confidence
If your Pentair WhisperFlo pump is losing power, the culprit may be the impeller. The Swimables 1HP Impeller Replacement (073128 SW-21-003) is the solution to weak water flow, noisy operation, or priming issues. Designed as a direct OEM-style replacement for Pentair part number 073128, this durable impeller restores your pump’s horsepower, maintains proper circulation, and helps extend the life of your entire pool system.
The impeller is the driving force behind your pump. As it spins, it draws water in and pushes it through your filter, heater, and return lines. Over time, impellers wear down, crack, or clog with debris, leading to reduced efficiency. Replacing a damaged or aging impeller with a Swimables replacement brings your system back to peak performance—without the cost of a full pump replacement.
OEM Compatibility You Can Trust
The Swimables 1HP Impeller is engineered to match Pentair’s OEM specifications exactly, making it a reliable replacement part for:
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Pentair WhisperFlo 1HP pumps
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Any system requiring OEM impeller part number 073128
By replicating the precise hydraulic design of the original, this impeller ensures correct water movement, consistent pressure, and efficient pump operation. It’s the ideal way to restore your pump to factory performance standards.
Why Choose the Swimables Replacement?
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Direct OEM Match: Replaces Pentair 073128 for 1HP WhisperFlo pumps.
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Durable Materials: Built from chemical-resistant, high-strength molded plastic for long-term use.
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Affordable Solution: Fixes performance issues without replacing the entire pump.
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Restores Flow and Pressure: Keeps your filter, heater, and sanitizer running efficiently.
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Protects Your Equipment: Prevents strain and damage to the motor caused by weak or damaged impellers.
Common Signs of a Worn Impeller
Not sure if your impeller needs replacing? Here are symptoms that point to impeller problems:
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Weak or inconsistent water flow from pool returns
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Motor overheating or running louder than usual
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Pump struggling to prime or losing prime altogether
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Filter pressure reading lower than normal
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Visible air bubbles in the pump strainer basket
If you notice one or more of these issues, it’s likely time to replace the impeller. A new Swimables 1HP Impeller can often resolve these problems immediately.
Technical Specifications
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Part Number: 073128 SW-21-003
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Horsepower Rating: 1HP
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Compatible Models: Pentair WhisperFlo 1HP pumps
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Material: High-strength, chemical-resistant molded plastic
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Function: Replaces OEM impeller 073128 to restore water flow and circulation
Protect Your Investment with Preventive Maintenance
Your pool pump is one of the most important pieces of equipment in your system. A worn impeller doesn’t just affect circulation—it forces your motor to work harder, shortens its life, and increases the risk of expensive repairs. Replacing the impeller with a high-quality part like the Swimables 073128 replacement is one of the simplest ways to protect your pump, reduce energy consumption, and ensure your pool stays clean and clear.
With proper care and water balance, this impeller will provide years of reliable service. Keeping baskets clear, maintaining clean filters, and checking your system for clogs all help extend its life.
Installation Made Simple
The Swimables 1HP Impeller is designed for easy replacement. The process typically involves:
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Disconnecting power to the pump.
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Removing the pump housing to access the motor assembly.
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Detaching the old impeller from the shaft.
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Installing the new Swimables impeller in its place.
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Reassembling the pump and restoring power.
Most pool owners with basic tools and mechanical knowledge can perform this replacement. For added peace of mind, a professional technician can install the impeller and check that your pump is operating correctly.
The Swimables Advantage
Swimables is known for producing reliable, cost-effective pool replacement parts that meet or exceed OEM standards. The 073128 SW-21-003 impeller is crafted to deliver consistent results in demanding pool environments, giving you confidence in your pump’s performance. With Swimables, you’re getting a part built for durability and designed to keep your system running smoothly.
Frequently Asked Questions (FAQ)
Q: Is this impeller an exact replacement for Pentair 073128?
A: Yes, this Swimables impeller is designed specifically to replace Pentair OEM part number 073128 used in 1HP WhisperFlo pumps.
Q: Can I use this impeller in a higher horsepower pump?
A: No, it is designed for 1HP pumps only. Using it in a different horsepower model can cause system imbalance or motor damage.
Q: How do I know if my impeller is failing?
A: Common signs include weak water flow, noisy motor operation, air in the system, and difficulty priming the pump.
Q: Is professional installation required?
A: Not necessarily. Many pool owners install impellers themselves with basic tools, but professional installation is recommended for the best results.
Q: How long should this impeller last?
A: With proper water chemistry and system maintenance, impellers can last several years before needing replacement.
Q: Will this impeller improve my water clarity?
A: Yes. By restoring proper circulation, your filter will capture debris more effectively, leading to cleaner, clearer pool water.
