How to Clean a Hot Tub Shell (Step by Step Guide)

This post discusses different methods of cleaning the hot tub shell and how to clean it properly. We also provide you with information on the best hot tub cleaner for the job.

Scum lines, scale lines, and mineral deposits in your hot tub shell can build up over time. A simple yet important cleaning routine is to drain and clean your hot tub shell. Cleaning your hot tub shell after draining it is an excellent way to keep your hot tub in good shape for many years. Fortunately, hot tub cleaning and maintenance aren't complicated, and practice makes the job easier.

4 Easy Steps to Clean A Hot Tub Shell

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Cleaning your hot tub's water line and headrest can be done with the water still in it. But if you want a thorough clean, you'll have to drain the hot tub. This allows you to clean the whole shell, including the jets and other hard-to-reach areas. Do this whenever you replace the water in your hot tub every three or four months.

Step 1

Ensure your hot tub shell is completely dry. Use a towel to wipe down any remaining water after draining the hot tub. Cleaning products work best on a perfectly dry hot tub shell. Wear a pair of clean socks to ensure no dirt gets in when cleaning the shell.

Step 2

Use an all-purpose cleaner specifically made for hot tubs. Choose something that can be sprayed and wiped clean and not affect your hot tub's water chemistry. For tough stains and deposits, you need to let it sit for about 5 minutes and then scrub and rinse with clean water.

Note: You can also use white vinegar as a cheaper alternative to all-purpose hot tub cleaner. It's both safe and effective and used by many hot tub owners.

Step 3

Check the jets for scum and mineral deposits, as these are the most common areas for buildup. Over time these can affect the performance of your hot tub and cause premature wear. Apply all-purpose cleaner around the jets with a rag and use a small toothbrush to clean these hard-to-reach areas.

Step 4

Finally, apply a thin coat of silicone-based polish to give your hot tub that luxurious, high-gloss finish, which also serves as a protective layer against harsh chemicals and prevents scum lines. We recommend using silicone-based polish because it bonds to the acrylic surface of your hot tub. Again, choose something that does not affect your hot tub's water chemistry. Apply a small amount using a clean rag and let it sit for ten minutes. Wipe it off with a separate clean rag.

steps to clean hot tub shell

Congratulations! Your hot tub shell is good as new again. As you can see, cleaning a hot tub shell isn't as complicated as you think. Besides, you only have to do this once every three to four months.


Keeping your hot tub shell in pristine condition extends the life of your hot tub and makes the hot tub experience more enjoyable. Remember to use only approved hot tub cleaners to avoid damaging your hot tub shell. But of course, you can also use safe and effective alternatives like white vinegar if you're on a budget.