Common Pool Pump and Equipment Problems (and How to Fix Them)

Our pool pump and equipment are the heart of your pool’s circulation system. Without them, water doesn’t flow, chemicals don’t mix, and dirt doesn’t get filtered out. If your pump or other equipment starts having issues, it can lead to cloudy water, algae growth, and even costly repairs.

Here’s a breakdown of the most common pool pump and equipment problems, their causes, and how to solve them.

   
1. Pump Won’t Turn On  

If your pump doesn’t start at all, it usually comes down to power or electrical issues.

  Possible Causes:

• Tripped breaker or blown fuse
• Faulty timer or wiring
• Pump motor failure

How to Fix:

• Check and reset the breaker or replace the fuse.
• Inspect timers and wiring for damage or loose connections.
• If the motor is burnt out or humming but not running, call a professional.

2. Pump Losing Prime (Air in the System)  

A pool pump needs to be full of water to work correctly. If it pulls in air, it can’t maintain prime.

Common Signs:

• Bubbles in the return jets
• Gurgling noises in the pump basket
• Loss of water flow

Possible Causes:

• Low water level in the pool
• Air leaks in the pump lid or plumbing
• Clogged skimmer or pump basket

How to Fix:

• Keep the water level ⅔ up the skimmer.
• Check and lubricate the pump lid O-ring.
• Clean out skimmer and pump baskets.
• Inspect and tighten plumbing connections if needed.

3. Pump Making Loud or Strange Noises  

A noisy pump is trying to tell you something.

Common Noises & Causes:

• Grinding or screeching: Worn-out bearings or motor problems
• Rattling or humming:   Cavitation or clogged impeller
• Vibrating:   Pump not secured or sitting on uneven surface

How to Fix:

• Make sure the pump is on level ground and tightly secured.
• Clean the impeller and baskets to remove debris.
• If noise persists, it may be time for a motor repair or replacement.

4. Low Water Flow  

If your pump is running but the water flow is weak, the issue is usually a blockage or restriction.

Possible Causes:

• Dirty filter
• Clogged pump or skimmer baskets
• Clogged impeller or suction line
• Air leak in the suction side

How to Fix:

• Clean your filter and baskets.
• Check for blockages in the lines or impeller.
• Ensure there are no air leaks around the pump lid or fittings.

5. Leaking Pump or Equipment  

Leaks can appear around the pump, filter, or heater, leading to the waste of water and chemicals.

Possible Causes:

• Worn pump lid O-ring
• Loose or cracked plumbing fittings
• Failed shaft seal or union gasket

How to Fix:

• Tighten or replace O-rings and gaskets.
• Replace damaged plumbing parts.
• For internal seal leaks, call a professional for a seal replacement.

6. Heater Malfunction

Pool equipment, such as heaters, can develop problems.
Heater won’t fire:  Could be low water flow, dirty filter, or gas/electrical issues.
   
Tip: Regular inspections and cleaning prevent most of these problems.


How to Prevent Pool Pump and Equipment Problems  

1.   Maintain Water Levels   – Never let the water drop below the skimmer.
2.   Clean Baskets and Filters   – Clear debris regularly to prevent clogs.
3.   Inspect Weekly   – Look for leaks, air bubbles, or unusual noises.
4.   Service Annually   – Have a pro inspect the pump, seals, and motor once a year.


The Bottom Line  

Your pool’s pump and equipment are essential to keeping the water safe, clear, and inviting. Catching minor issues early can save you from costly repairs or mid-season breakdowns.

Stay on top of basic maintenance, and your pool will run smoothly all season long.