Owning a hot tub is one of the best ways to unwind and recharge in your own backyard year-round. Even the best spas need a little TLC to stay running smoothly, though. Knowing how to troubleshoot common hot tub issues saves you money on repairs and keeps your spa feeling inviting season after season.
Before calling in a technician or stressing over the issue, take a moment to check the simple stuff:
If everything checks out but issues keep popping up, let’s dive into the most common hot tub troubles and how to tackle them.
If your spa water won’t heat right or keeps cooling off too fast, start by making sure the temperature setting is where it should be. Many hot tubs get accidentally switched to “Economy” or “Sleep” modes that limit heating.
Low water flow from dirty filters, closed valves, or trapped air can stop the heater from working. After you drain and refill, remember to bleed the system to push out any air pockets.
If your water’s still cold, the heater element itself might need replacing, which is generally a straightforward fix. Broken temperature sensors are a different story and usually need a professional to sort out.
Don’t forget your cover, either. A worn or ill-fitting cover lets heat escape, making your tub work harder and costing you more in energy.
Nothing ruins a soak faster than jets that fizzle out. Airlocks, mineral buildup, and blockages are the most common culprits.
Check that all jets and air valves are fully open (they get accidentally closed more often than you’d think) and give them a good clean if debris has gunked things up.
Running a spa purge can clear internal lines and restore flow. It’s worth peeking at your circulation pump too. A stuck impeller or jammed motor cuts pressure noticeably. To clear airlocks, run the jets on high for a bit, or slightly loosen the pump’s top fitting until water flows smoothly.
Always keep an eye on your water level as well. Too low, and the jets just blow air.
Cloudy, foamy, or smelly water is really common but totally preventable with proper care.
Test your water regularly. Aim for a pH of 7.2 to 7.8, alkalinity between 80 and 120 ppm, and keep sanitizer levels in line with your tub’s recommendations.
Weekly shocking with a non-chlorine oxidizer helps clear out oils and skin products that normal sanitizer can’t touch. Foam is usually caused by detergents or lotions on swimsuits, so rinse swimwear thoroughly before getting in.
Keep filters clean or swap them out as needed, and plan to drain and refill your tub every few months. Fresh water keeps your hot tub feeling great and protects the heater, pump, and plumbing.
If your pump sounds off, or water flow feels weak, there’s likely a blockage or wear and tear involved.
Growly or gurgling sounds mean it’s not getting enough water. Squealing, on the other hand, often points to worn bearings or a motor that needs attention.
Check for leaks at seals and fittings, since even tiny drips can escalate quickly. Clean filters and suction covers frequently. If breakers trip repeatedly, the pump may be drawing too much power or there’s an electrical fault involved.
Error codes like “FLO”, “DRY”, or “OH” are warnings your tub needs attention. Only reset breakers after flow has been restored. Persistent pump trouble should always be checked by a professional.
Even with our mild BC winters, cold temperatures can challenge your hot tub.
Clear snow and debris from your cover to keep it in good shape, and apply a UV protectant to prevent cracking in the sun. A floating thermal blanket over the water cuts heat loss and evaporation significantly.
Run circulation daily or enable freeze protection mode so pipes don’t freeze. Exposed plumbing benefits from foam pipe sleeves for added insulation. Make sure to also keep your spa area safe by shovelling snow and salting to prevent slips.
These simple steps keep your spa efficient and ready whenever you are.
Troubleshooting helps you get ahead of problems and enjoy your hot tub longer. If you’ve worked through these tips and still have electrical issues, a broken heater, persistent leaks, or repeated breaker trips, it’s time to bring in a qualified technician.
At Jovak Luxury Pools, we’re proud to help you protect your investment and keep your outdoor space relaxing and beautiful. Reach out anytime. We’re here to get your hot tub back in top shape.