Pool Pump Impeller

Keep Your Pool Running Smoothly: Understanding Clogged Impeller Symptoms

The pool pump is a crucial element in maintaining a clean and healthy pool. The impeller of the pump circulates and filters the water, ensuring that it is kept clean and free of impurities. But over time, the impeller may clog and cause a number of problems. We’ll go over the signs, causes, and prevention of a clogged pool pump impeller in this article.

What is a pool pump impeller?

Let’s first define a pool pump impeller before delving into the signs of a clogged impeller. Simply described, the impeller is a rotating component within the pump that produces the flow of water. It includes curved blades that force water to pass from the pool to the filter and back again.

Pool pump impellers are classified as either:

  1. closed-face or
  2. open-face.

Closed-face impellers, which have a solid plate covering the blades, are typically used in smaller pumps. Open-face impellers, on the other hand, are seen in larger pumps and have exposed blades.

Top 6 Symptoms of a Clogged Pool Pump Impeller

  1. Reduced Water Flow Rate: One of the most prevalent signs of an impeller blockage is a reduced rate of water flow. This happens as a result of blocked impeller blades, which restrict water flow.
  2. Unusual Pump Noises: A clogged impeller can also be identified by the unusual pump noises it makes when it is operating. High-pitched whining, grinding noises, or vibrations might be the result of this. Damage to the impeller and other pump parts may result from the impeller blades colliding with the debris.
  3. Pressure gauge reading Abnormally high: unusually high pressure reading The pump’s pressure gauge should read within a particular range. A clogged impeller could be the cause of an excessively high gauge reading. A clogged impeller restricts water flow, leading to increased pressure inside the pump.
  4. Motor Overheating and Shutting Off: The motor might overheat and shut off if the impeller became clogged, which would then prevent the pump from operating. This is because the pump’s motor is overloaded and struggling to keep up with the excessive workload.
  5. Bubbles in the Pool: If you see bubbles emerging from the pool’s returns, it could be a sign of a clogged impeller. Bubbles emerge in the water when air is caught in the impeller and the water flow is disrupted.
  6. Visual Inspection: Sometimes, debris and clogs on an impeller can be spotted just by looking at it. The impeller is probably clogged if there is visible debris.

Causes of a Clogged Pool Pump Impeller

The most prevalent reasons for a blocked impeller in a pool pump have been examined, so let’s move on to discussing the symptoms:

  • Debris in the Pool: Clogged impellers are typically brought on by debris in the pool. Debris-like leaves and dirt can find their way into the pool and eventually jam the pump’s impeller.
  • Age and wear and tear: Wear and tear over time is another reason for a clogged impeller. The impeller’s vulnerability to clogging increases as it ages and wears.
  • Incorrect Installation: Improper installation is one possible reason for a clogged impeller. The impeller’s inability to efficiently flow water due to improper installation increases the likelihood that it will become clogged.

How to Prevent a Clogged Pool Pump Impeller

The best way to keep a swimming pool in good condition is to take preventative measures. To avoid a blocked impeller in your pool pump, keep in mind the following:

Proper Maintenance and Cleaning Schedule:

The easiest method to avoid a blocked impeller is to keep up with routine maintenance and cleaning. This entails doing things like backwashing the filter as needed and keeping the pool and skimmer baskets clean.

Installing a Pre-Filter Basket:

The installation of a pre-filter basket can help reduce the amount of dirt that reaches the impeller. The basket is simple to empty and clean, lowering the possibility of obstructions.

Using Pool Covers and Cleaning Tools:

Cleaning Equipment and Pool Covers A pool cover can be used to keep debris out of the pool when it is not in use. Debris in the pool can be removed before it clogs the pump by utilizing a pool skimmer and vacuum.


How can I tell if the impeller on my pool pump is clogged?
Reduced water flow, noisy operation, and the motor overheating and shutting off are all signs of a clogged impeller in a pool pump. There could be air bubbles in the water, and the water pressure could decrease.

Why does my pool pump’s impeller keep getting clogged?
Debris in the pool, such as leaves and dirt, is the most common cause of a clogged impeller. Impeller clogging can also be caused by age, wear and tear, and improper installation.

Can I remove debris from a pool pump impeller on my own?
A blocked impeller in a pool pump can be cleaned by the homeowner, although doing so could call for some technical expertise. To fix this, take out the impeller and give it a good cleaning, making sure to get rid of any obstructions. If you are unclear about how to proceed, you should seek the advice of an expert.

Why does the impeller on my pool pump keep becoming clogged?
The best way to keep a swimming pool in good condition is to take preventative measures. Maintaining a regular cleaning routine, installing a pre-filter basket, and using pool covers and cleaning tools are all strategies to reduce the likelihood of a clogged pool pump impeller.


The pool pump’s impeller plays a significant role in ensuring the cleanliness and well-being of the pool. Reduced water flow, motor overheating, and eventual shutoff are just some of the problems that might result from an impeller that has been clogged. Keep your pool running smoothly and enjoy a clean and refreshing swimming experience by learning the signs of a blocked impeller, what causes it, and how to avoid it. A clogged pool pump impeller can be avoided with routine maintenance, the use of a pre-filter basket, a pool cover, and appropriate cleaning tools.

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