Hot tub problems
Most hot tub problems trace back to one of four things: dirty filters, unbalanced water, a failing cover, or a component that has reached the end of its life. Check the filter and the water chemistry before calling anyone - those two account for a large share of no-heat, weak-jet, and cloudy-water complaints, and both are free to rule out.
No heat or weak jets. Start with flow. A clogged filter or a low water level starves the pump, and many tubs will shut the heater down to protect themselves. Clean or replace the filter, top up the water, and see whether the problem clears before you pay for a call-out.
Tripping breaker. Stop using the tub and call a licensed electrician. A GFCI or breaker that trips repeatedly is detecting a fault, and a hot tub combines water with a high-current circuit. This is the one problem on this page you should never troubleshoot yourself or work around by resetting repeatedly.
Cloudy, foamy, or smelly water. Almost always chemistry or filtration: sanitizer out of range, pH or alkalinity drifted, a filter that needs cleaning, or water that is simply due for a change. Follow the dosing on your product labels and your owner's manual, and drain and refill on the schedule the manufacturer gives.
Rising electricity bill with no other symptom. Look at the cover first. A waterlogged cover is the most common quiet cause. This Old House puts normal above-ground operating cost at $25-$35 a month; a bill drifting well above your established baseline is a signal something has changed, usually the cover or a filter.
Choosing hot tubs & spas a fix
The judgement calls that decide the bill, before anyone quotes you.
- Check filter and water level before calling for service Low flow causes a surprising share of no-heat and weak-jet complaints, and it costs nothing to rule out.
- Never keep resetting a tripping breaker It is detecting a fault. Stop using the tub and get a licensed electrician. This is a shock hazard, not an inconvenience.
- Write down your normal monthly power cost You cannot spot a problem in your bill without a baseline. Note it in the first stable month of ownership.
- Look up the error code in your manual first Most control packs display specific codes with defined meanings. Knowing the code before you call makes the call shorter and cheaper.
- Get a diagnostic price before authorizing repair Ask for the call-out fee, the hourly rate, and whether the diagnostic is credited against the repair. Get the parts quote before work starts.
All hot tubs & spas problems
Hot Tub Not Heating
Hot Tub Leaking
Cloudy Hot Tub Water
Hot Tub Pump Noise
Tripping Gfci
Hot Tub Jets Not Working
Deck Cant Hold Hot Tub
High Hot Tub Electric Bill
Where these figures come from
Sources last checked
- This Old House - Hot Tub Cost (operating cost baseline) · retrieved 2026-07-26
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