How to Winterize Your Tub and ChillerUpdated 10 days ago
If you live in a cold climate or plan to store your plunge setup during winter, it is important to winterize your tub and chiller properly. Winterizing protects your equipment from damage, prevents freezing inside the system, and keeps everything in good condition for the next season.
This guide explains the simple steps you can follow to safely prepare your tub and chiller for cold weather or long term storage.
Why Winterizing Is Important
Winterizing helps
Prevent ice buildup inside the chiller or hoses
Protect internal components from freezing
Avoid cracks or damage caused by expanding ice
Extend the life of your tub and chiller
Keep your system clean during long storage periods
Even a small amount of water left inside the system can freeze and cause problems, so proper winterizing is important.
Step 1: Turn Off and Unplug the Chiller
Before starting, power off the chiller and unplug it completely. Never winterize or drain the system while it is running. Allow the chiller to sit for a few minutes to cool down before moving on to the next steps.
Step 2: Drain the Tub Completely
Open the drain valve and remove all water from the tub. Make sure the tub is fully empty before proceeding.
You may tilt the tub slightly to make sure every corner drains out, especially if your model has seams where water can settle.
Step 3: Disconnect All Hoses
Remove the hoses from both the tub and the chiller. Point them downward and let any remaining water drain out. Shake them gently to release trapped water.
If water stays inside a hose, it can freeze and cause cracks, so make sure they are completely empty.
Step 4: Drain the Chiller
Your chiller may still hold water inside the internal lines. To clear it out
Tilt the chiller gently forward
Tilt it backward
Then tilt it to each side
This helps remove any water sitting in the internal pipes. Take your time with this step, because even small amounts of water can freeze in cold climates.
Step 5: Dry the Tub Interior
Wipe the inside of the tub with a clean, dry cloth. A dry tub helps prevent mold, odors, and bacteria from developing while it is in storage.
If you are storing it long term, allow the tub to air dry for a few hours before closing or packing it.
Step 6: Clean the Filter Housing
Remove the filter, rinse it, and let it dry. If the filter is worn or dirty, replace it before storing.
Clean the filter area to remove any trapped debris or oils. A clean and dry filter compartment prevents smell and buildup during storage.
Step 7: Store the Tub Properly
Make sure the tub is completely dry before storing. Store it in a location that is
dry
cool
away from direct sunlight
away from sharp objects
If your tub is inflatable or foldable, pack it loosely to avoid creasing. If it is rigid, cover it to prevent dust buildup.
Step 8: Store the Chiller Indoors
Always keep the chiller in a dry indoor space during winter. Avoid garages, sheds, or outdoor areas where temperatures drop below freezing.
A safe storage location protects
the internal pump
the cooling system
electronics
hoses and fittings
Keeping the chiller indoors extends its lifespan and prevents cold damage.
Step 9: Inspect Everything Before Restarting in Spring
When you are ready to use your system again
check hoses for cracks
inspect fittings and seals
rinse the tub interior
install a new filter if needed
refill the tub with fresh water
restart the chiller only after water is circulating
This ensures your first plunge of the season is safe and clean.
Summary
Winterizing your cold plunge system protects your tub and chiller from freezing temperatures and long term wear. The key steps are
drain the tub
drain the chiller
remove all hoses
dry everything completely
store indoors
keep the chiller in a warm, dry location
Following these steps helps prevent damage and keeps your system in great condition for the next season.