Tips for Safely Closing Your Hot Tub for Winter

Preparing your hot tub for winter is crucial to protect it from freezing temperatures and costly damage. Proper winterization steps help keep your spa components safe and ensure an easier reopening when warmer weather returns.

Why Winterizing Your Hot Tub is Important

Leaving your hot tub filled and unused during winter can lead to frozen pipes, damaged pumps, and cracked shells. Properly closing your spa prevents:

Frozen Plumbing: Water left in pipes can expand and crack fittings.
Pump Damage: Pumps can freeze or develop buildup if left unmaintained.
Dirty, Stagnant Water: Without circulation, your water can turn cloudy or develop algae.
Expensive Repairs: Winter damage can lead to costly fixes come spring.

Tools and Supplies You’ll Need

Before starting, gather the following tools and products:

Garden hose
Wet/dry vacuum
Spa-safe cleaner
Filter cleaner solution
Large towels or rags
Hot tub cover (with insulation if possible)
Non-toxic antifreeze (optional for added protection)

Step 1: Drain the Water

To safely close your hot tub, start by draining the water completely:

Turn Off Power: Shut off your hot tub at the breaker to avoid electrical issues.
Attach a Hose to the Drain Valve: Most hot tubs have a drain valve at the base.
Drain the Tub Completely: Allow all water to flow out naturally or use a submersible pump for faster draining.
Remove Remaining Water: Use a wet/dry vacuum to clear out any puddles in seats, footwells, and jets.

Step 2: Clean the Interior

Once drained, clean the hot tub shell to prevent stains and buildup:

Use a Spa Cleaner: Apply a non-abrasive cleaner designed for spa surfaces.
Wipe Down with Towels: Dry every surface thoroughly to remove excess moisture.
Check for Cracks or Damage: Address any issues before closing the tub.

Step 3: Remove and Clean the Filters

Cleaning your filters before storage is crucial for preventing mold or mildew:

Remove the Filters: Unscrew and lift out the filters from their housing.
Soak in Filter Cleaner: Use a dedicated filter cleaning solution and soak them for at least 24 hours.
Rinse and Dry Completely: Allow the filters to dry fully before storing them in a dry, cool place.

Step 4: Blow Out Plumbing Lines

Residual water in pipes can freeze and expand, causing damage. Clearing the lines is essential:

Use a Wet/Dry Vacuum: Insert the hose into each jet and suction out water.
Blow Out Air Blower Ports: Repeat the process with all air blower ports and water intake valves.
Ensure No Water Remains: Double-check each jet to confirm they are dry.

Step 5: Add Non-Toxic Antifreeze (Optional)

For added protection, some owners choose to add non-toxic antifreeze:

Pour Antifreeze into Each Jet: Add a small amount to each jet and plumbing line.
Use Spa-Safe Antifreeze Only: Avoid automotive antifreeze, as it’s unsafe for hot tubs.

Step 6: Secure the Hot Tub Cover

A proper cover prevents debris, snow, and ice from accumulating in your spa:

Use a Quality Cover: Insulated covers designed for winter conditions work best.
Lock the Cover in Place: Tighten straps or locks to secure it against strong winds.
Brush Off Snow Regularly: Remove heavy snow buildup to prevent cover damage.

Step 7: Maintain the Area Around Your Hot Tub

Even when closed, your hot tub area needs occasional upkeep:

Keep the Area Clean: Sweep away leaves, ice, and debris.
Check the Cover Weekly: Inspect for rips, tears, or loose straps.
Ensure Proper Drainage: Prevent water from pooling around the base of your hot tub.

Step 8: Plan for Regular Inspections

While your hot tub is winterized, inspect it periodically to ensure everything remains secure and damage-free.

Check Monthly: Confirm the cover is sealed tightly.
Look for Animal Activity: Rodents can sometimes nest in hot tubs left outdoors.
Monitor for Ice Damage: Clear ice buildup from the cover to prevent cracking.

Step 9: Reopen Your Hot Tub Safely

When it’s time to reopen your hot tub in spring, follow these steps:

Remove the Cover Carefully: Wipe away any debris before lifting the cover.
Clean the Shell: Rinse away any dust or dirt from the tub surface.
Refill and Balance the Water: Ensure pH, alkalinity, and sanitizer levels are correct.
Restart the Pump and Heater: Allow your system to circulate for 24 hours before use.

Common Mistakes to Avoid

Avoid these mistakes to ensure your hot tub stays protected during winter:

Skipping the Plumbing Flush: Residual water can freeze and crack pipes.
Leaving the Filters Inside: Filters can develop mold if not removed and cleaned.
Forgetting to Lock the Cover: Strong winds can lift unsecured covers, exposing your tub to debris.
Using Harsh Cleaning Products: Spa-safe cleaners are safer for your tub’s shell and components.

Extra Tips for Winter Protection

For added security and peace of mind, consider these tips:

Add a Tarp Over the Cover: A tarp provides an extra barrier against snow and ice.
Use Wind Straps: Wind straps secure your cover more effectively in windy areas.
Invest in a Spa Cover Cap: A weather-resistant cap adds another layer of protection.

Following these steps ensures your hot tub remains in top condition through winter, saving you from costly repairs and helping you enjoy your spa once warmer weather returns.