8 Signs Your Hot Tub Needs Maintenance

There’s nothing like unwinding in a hot tub after a long day—but relaxation can quickly turn into frustration if your hot tub starts to show signs of trouble. Like any complex system, hot tubs may develop issues that require maintenance from a professional technician. Recognizing these issues early on can prevent them from escalating into bigger problems, helping your hot tub remain a safe, functional, and enjoyable space to relax.

In this blog, we list common signs your hot tub needs maintenance or repair, so you’ll know when it’s time to call a technician.

1. Water Odor

Water treatment often gives hot tub water a mild chemical smell. However, your hot tub water should never smell strongly unpleasant. If there is a foul smell emanating from your hot tub water, even if you keep up with water changes and proper maintenance, this could be a sign that something isn’t working.

This may be a water circulation issue, which is generally caused by blockages in the pump, filter, or drain. It can also be a sign of water contamination. If you notice a strange smell, don’t use your hot tub until the problem is fixed.

A technician can diagnose and resolve water circulation or bacterial buildup issues, which aren’t easily fixed through regular at-home maintenance. Seeking help from the pros ensures your hot tub is clean, safe, and functional so you can get back to using it regularly.

2. Foam, Bubbles, or Water Discoloration

The presence of foam, excessive bubbles, or unusual water coloration is typically a sign of unclean water. If you keep up with at-home maintenance and change your hot tub water every 3-4 months and the issue persists, there may be an issue with the hot tub itself.

Persistent water quality issues often indicate more profound problems with the hot tub’s filtration or chemical balance systems. A professional technician can inspect and repair these underlying issues, restoring optimal water quality for clear, relaxing soaks.

3. Control Panel Issues

Flashing error signs or unresponsive controls can indicate electrical or software malfunctions. These issues can be frustrating to deal with on your own and usually require specialized knowledge and tools to fix.

A professional tech can recognize the root cause of these issues and effectively repair them, preventing potential electrical hazards and restoring full functionality.

4. Mold or Mildew Growth

If mold or mildew is growing anywhere in your hot tub, it’s time to call a technician. This can manifest as dark gray, black, white, or greenish spots on the cover or walls, often at the water line. If you regularly maintain and change your water, mold could indicate underlying issues with water circulation or other essential mechanisms.

If you notice mold or mildew growth, it’s important to avoid using your hot tub until a professional technician addresses it. They will thoroughly clean the affected areas, recommend water care tips, and manage any underlying issues to help prevent future mold and mildew growth. 

5. Algae Buildup

Unlike mold and mildew, algae is a greenish or slimy growth that often makes the water appear murky. This buildup could indicate pipe corrosion or contamination in the jets or plumbing. A qualified hot tub technician will know how to diagnose the problem, fix underlying mechanical issues, and ensure your water is safe.

6. Water Leaks

If water is pooling around your hot tub or the interior water level lowers quickly, your tub may have a leak that needs to be fixed by a professional technician.

Leaks are often caused by cracks, holes, or plumbing issues. A hot tub expert will have the right tools and experience to locate the source of the problem and repair it. It’s important to address this issue as promptly as possible to avoid structural damage or excess water wastage.

7. Fluctuating Water Temperature 

If your hot tub’s water temperature fluctuates frequently, it likely needs professional repair. Unwarranted changes or inconsistent temperature can indicate issues with the thermostat, heating element, or water circulation system. A hot tub technician can diagnose and fix this problem to ensure consistent and safe water temperature.

8. Unusual Sounds from the Pump

Unusual noises coming from the pump, such as grinding or whistling, are sure signs it’s time to call a technician. These sounds may indicate wear and tear, blockages, or mechanical failures in the pump. A hot tub technician can diagnose the root cause of the noise and perform the repairs necessary to restore your hot tub to normal operation.