Because Cold Weather Shouldn’t Kill Your Bubbles
Owning a blow-up hot tub in winter feels like a flex — hot water, cold air, steam rising like you’re in a luxury spa ad. But if you don’t prep it right? That magical soak can turn into a plumbing disaster, a sky-high electric bill, or worse — a frozen, cracked mess.
Good news? Winter-proofing your inflatable hot tub is totally doable — and it’s easier than most people think.
Here’s how to keep your spa running warm, safe, and bubble-ready all season long.
1. Start With the Right Model (Don’t Skip This)
Not all inflatable hot tubs can handle cold weather. Before you do anything else, make sure your model has:
- Freeze protection (like Bestway’s Freeze Shield™)
- Thick, all-weather material (TriTech, Fiber-Tech, or similar)
- A reliable insulated lid
If yours doesn’t have freeze protection, it’s not meant to be run in winter — and you risk destroying the pump when the temperature drops. You can still use it — just prep it right and monitor temps closely.
2. Insulate the Ground Like a Pro
Heat escapes through the base faster than anywhere else. Lay down:
- Foam insulation boards (like the stuff used under flooring)
- Or a thermal ground mat specifically designed for hot tubs
The difference this makes? Massive. You’ll keep heat in, save money, and reduce how often the heater kicks on.
3. Wrap the Sides (Especially If You’re in a Freezing Zone)
You can buy hot tub insulation jackets online — or DIY it with:
- Thermal blankets
- Reflective foil insulation (bubble wrap with silver lining)
- Insulation foam rolls with waterproof tape
Wrap it around the tub’s sides (avoid covering vents or controls) to create a warm barrier that keeps the cold out.
4. Use the Lid — Always
Never leave your hot tub uncovered in winter, even for a few hours. Heat escapes fast in cold air. Your insulated lid is your best friend — keep it sealed when not in use.
Pro tip: Throw a thermal spa blanket directly on the water surface under the lid. It’s like a second layer of warmth that traps heat even better.
5. Don’t Let It Freeze — Ever
Freezing water = burst pipes, cracked liners, dead pumps. Keep your tub running if it’s outside and in use. Set the timer to run the heater during the coldest parts of the night if needed.
If you’re not using it for a while:
- Drain it completely
- Remove water from all hoses and filters
- Add spa-safe antifreeze if you can’t fully empty the pipes
6. Be Smart With Chemicals in Cold Months
Water chemistry gets weird in winter. Test more often.
Keep chlorine and pH balanced to prevent weird buildup or bacteria.
Also: warm water + cold air = faster evaporation. Top it off with fresh water when needed.
7. Watch the Weather and Adjust Accordingly
If it’s going to drop below freezing for days on end and you won’t be using the tub? Either leave it running 24/7 with freeze protection or drain and store it. There’s no in-between.
Final Word
Winter can be your hot tub’s best season — if you prep it right. With a little insulation, consistent care, and the right setup, you can soak all winter long without the stress of frozen parts or ruined gear.
Your future self — toasty, relaxed, and floating under snowflakes — will thank you.
Ready to grab a cold-weather-ready tub?
Check out our Best Blow-Up Hot Tubs for Winter or our full Buyer’s Guide to get started.