How to Drain a Hot Tub: Step-by-Step Guide
Keeping your hot tub clean and well-maintained isn’t just about filters and chemicals - draining and refilling the water regularly is just as important. In this post, we’ll walk you through the step-by-step process of how to drain your hot tub safely, quickly, and efficiently.
Whether you're a first-time owner or just need a refresher, this simple guide has you covered.
How Often Should You Drain Your Hot Tub?
Most hot tubs need to be drained and refilled every three to four months to maintain clean, healthy water. However, if your spa uses a salt water system, you may be able to go a bit longer between drains thanks to the continuous sanitation process. Always monitor your water quality and follow manufacturer recommendations.
What You’ll Need
Before you get started, make sure you have the following:
- Garden hose
- Submersible pump (optional but faster)
- A safe drainage point (e.g. driveway, garden, or drain)
- A clean cloth or sponge
Step-by-Step: How to Drain Your Hot Tub
1. Turn Off the Power
Before doing anything, switch off your hot tub at the isolator switch or breaker box. This is essential for safety and prevents damage to your equipment during the drain process.
2. Choose Your Drain Method
Most hot tubs have a built-in drain valve near the base. You can use that, or for a faster and easier option, use a submersible pump.
- Using the valve: Pull it out or twist it open, then attach your garden hose.
- Using a pump: Place it in the footwell of your spa and run the hose to a suitable drainage spot. No need to open the valve if you're going this route - the pump does all the work.
3. Let It Drain
- With a hose attached to the valve, gravity will slowly drain the water.
- If you’re using a pump, it’ll be much quicker - great for larger spas or when time is short.
4. Remove Leftover Water
Once the majority of the water is gone, you may find some puddles left in the footwell or seats. Use a sponge or cloth to soak these up.
5. Give It a Clean
This is a perfect time to wipe down the inside of your spa. Use a spa-safe cleaner and a non-abrasive cloth to remove any residue or waterline marks.
6. Close the Valve
If you used the drain valve, remember to shut it tightly once the spa is empty. This prevents leaks when you refill it.
Refilling Your Hot Tub
Once the cleaning is done, you’re ready to refill:
- Place your hose into the filter housing rather than directly into the spa, as this is prevent airlocks.
- Fill until the water level reaches just below the headrests or about halfway up the filter.
Once the spa is full, you can switch the power back on at the isolator.
Add Your Chemicals
With the water circulating again, it’s time to rebalance your spa water:
- Add your water treatment chemicals - chlorine, bromine, or whatever system you’re using.
- Test the water to ensure it’s properly balanced before getting in.
Need a Hand?
If you’re unsure about any of the steps above - or would prefer us to take care of it for you - just get in touch. We’re always happy to help you get the most out of your hot tub.
We also offer convenient maintenance plans, which can be paid by direct debit, so you can sit back and relax while we handle your regular spa cleaning and care. No hassle, no fuss - just crystal-clear water and complete peace of mind.
