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Hot tub pumps are the essential components that power hot tubs and spas. Without the proper functioning of a pump and its related parts, a hot tub can quickly become a big mess. This complete guide to hot tub pumps will provide detailed information on how pumps work, common questions related to their use, and how to keep them in good shape. Let’s dive in to get a better understanding of hot tub pumps and their importance for keeping hot tubs in top working condition.

What are Hot Tub Pumps and How Do They Work?

Hot tub pumps are what powers the hot tub’s filtration systems and ensures hot, clean water. The pump is made up of several components. The electric motor turns a shaft that works to move water through the mechanics of the pump. The impeller is the most important function of the motor, enabling the water to move in the proper direction. The pump also helps control the jets in a hot tub and the speed of operation.

Common Hot Tub Part Names

Pump Housing & Lid:

The housing of the pump is the piece that encloses the blades or impeller of the pump and helps maintain the pump’s shape. The lid of the pump houses the motor, wiring, and other electrical components.


The impeller is the blade of the pump that churns the water and helps send it into the filter. The number and style of the impeller determines the efficiency and speed of the pump.

Inlet & Outlet Strainer Baskets:

The strainer baskets are the first line of defense for a pump, preventing debris from entering the pump and clogging it up. The inlet basket is responsible for catching large debris, while the outlet basket traps anything small enough to escape the inlet basket.

Correct Size & Replacement Parts

Selecting the Right Size:

The size of the pump depends upon the make and model of the hot tub. Hot tub pumps come in a variety of sizes, from small to large. The pump should fit correctly into the hot tub, as well as have the correct size for the size of the hot tub.

Recommended Replacement Parts:

To ensure the best results for your hot tub pump, purchase recommended replacement parts to replace those that may wear out over time. Make sure to annually replace the motor and check any wiring regularly. It’s also important to adequately lubricate the shaft and ensure there is no vibration.

People Also Ask

Q: How often should I replace my hot tub pump?

A: It’s recommended that you replace your pump every 3-5 years depending on the condition of the pump and usage.

Q: What can I do to maintain my hot tub pump?

A: Maintenance should include regularly cleaning the spreader plate and strainer baskets, checking the wiring regularly, and lubricating the shaft.

Q: What is the average cost of a hot tub pump?

A: The cost of a hot tub pump varies depending on size, however, an average cost is around $200-400.

Q: Is it safe to operate a hot tub pump without a lid?

A: Operating a hot tub pump without a lid is not recommended as the lid houses important motor, wiring, and electrical components that ensure safe operation of the pump.

Final Words

Hot tub pumps are an important part of keeping your hot tub functioning and clean. Understanding the components of a hot tub pumps, selecting the right size, replacing worn parts, and conducting maintenance are all key steps to keeping your pump in top condition. With proper care, you can keep your hot tub pump running at peak performance levels.