Hot tub maintenance schedule and checklist

Hot tub maintenance comes down to a short routine: test and adjust the water 2 to 3 times a week, shock and rinse the filter weekly, soak the filter monthly, change the water every 3 to 4 months, and replace the filter and inspect the cover and equipment once a year. That is about 10 to 15 minutes a week.

The schedule at a glance

When	Task	Time
After each soak	Add a maintenance dose of sanitizer if you use chlorine. Close and latch the cover.	1 minute
2–3 times a week	Test with a strip. Adjust alkalinity, pH, and sanitizer.	5 minutes
Weekly	Shock. Rinse the filter. Wipe the waterline. Check the water level.	10–15 minutes
Monthly	Filter cleaner soak. Test calcium hardness. Test the GFCI. Clean the cover.	20–30 minutes
Every 3–4 months	Line flush, drain, clean shell, deep clean filter, refill, rebalance.	3–4 hours
Yearly	Replace filter. Inspect cover, equipment bay, and pillows. Condition the cover.	30–60 minutes

After each soak

• If you use chlorine, add a small dose per the label. Bathers use up most of what was there.
• Leave the cover open for 15 to 20 minutes after dosing, then close and latch it.
• Rinse swimwear in plain water.

Two to three times a week

1. Dip a test strip at elbow depth and read it at the time on the bottle. See how to read test strips.
2. Adjust total alkalinity to 80–120 ppm if needed.
3. Adjust pH to 7.2–7.8.
4. Bring sanitizer to range: free chlorine 1–3 ppm or bromine 3–5 ppm.

Add one product at a time with the jets on, per the label for your tub's volume. Wait 20 to 30 minutes between products. Never mix chemicals.

Weekly

• Shock. Non-chlorine shock for routine care, chlorine shock after heavy use. Cover off for at least 20 minutes. See hot tub shock.
• Rinse the filter. Power off at the breaker, pull it, hose between the pleats.
• Check the water level. It should sit above the highest jets and about halfway up the skimmer opening. Low water causes flow errors and noisy pumps.
• Wipe the waterline with a soft cloth to stop a scum ring forming.
• Bromine users: check the floater and refill tablets.

Monthly

• Soak or spray the filter with filter cleaner, then rinse well. Details in how to clean a hot tub filter.
• Test calcium hardness. Target 150–250 ppm.
• Test the GFCI. Press the TEST button on the GFCI breaker. The tub should lose power at once. Reset it. If it does not trip, stop using the tub and call an electrician.
• Clean the cover. Wipe the top and underside with a mild cover cleaner or plain water. Let the underside air out.
• Look in the equipment bay. With a flashlight, check for drips, puddles, white crusty deposits at fittings, and rodent nests. Do not open the control box.
• Listen. A new whine, grind, or hum from a pump is worth catching early.

Every 3 to 4 months

1. Add a line flush product and circulate per the label. See hot tub line flush.
2. Turn off the breaker and drain. See how to drain a hot tub.
3. Wipe the shell, jets, and pillows.
4. Deep clean the filter overnight or swap in your spare.
5. Refill through the filter compartment.
6. Restore power, bleed air, balance, and heat.

Yearly

• Replace the filter if it is 12 to 24 months old or showing wear.
• Inspect the cover. A cover that has become heavy is waterlogged and no longer insulates. Check the seams, hinge, and vapor barrier. Treat vinyl with a UV protectant made for spa covers.
• Check pillows and jet inserts for cracks or fading. Both are easy replacements.
• Check the cabinet and base for rot, gaps, and pest entry points.
• Review pump unions. With power off, make sure they are hand-tight and dry.
• Consider a professional checkup if the tub is over 5 years old. You can request quotes from local hot tub pros.

Seasonal notes

Summer

Pump heat can push water above the set temperature. Shorten filter cycles and run them at night. Sunscreen loads the water quickly, so shock more often.

Winter

Keep the tub running and covered. Check that it is heating after any storm or power cut. Do water changes on a mild day. If the tub will sit unused and unattended, see hot tub winterizing.

Going away

• Up to a week: balance, shock, close the cover. Nothing else needed.
• One to three weeks: also lower the temperature or use the tub's vacation or sleep mode, and use a floater for sanitizer or ask someone to dose weekly.
• Longer, in freezing weather: have someone check it weekly, or winterize.

Printable checklist

1. Test and balance: 2–3 times a week
2. Shock: weekly
3. Rinse filter: every 1–2 weeks
4. Filter cleaner soak: monthly
5. GFCI test: monthly
6. Drain and refill: every 3–4 months
7. New filter: every 12–24 months
8. Cover and equipment inspection: yearly

You can set all of these as AskTub reminders matched to your tub size and how often you use it, so the schedule runs itself.