Do you need to winterize your hot tub? The answer is it depends. Winterizing your hot tub is unnecessary if you expect to enjoy it regularly throughout the cold months. However, suppose you'll be out of town for a few months or plan on using something other than your hot tub over the winter. In that case, winterizing is crucial to keep your spa in good working condition and protect it from the harsh elements.

So, you've decided that winterizing your hot tub is still the right choice for your situation. Now what? This guide will help ensure that your hot tub is ready for winter and cold weather and primed for use once warmer months return.

Why Winterize Your Hot Tub?

If you take a long break from your outdoor hot tub over the winter, winterizing it properly is essential to safeguard it against freezing temperatures that can cause ruptures, cracks, or splits in pipes and other components. Damage of this caliber can lead to costly repairs, sometimes exceeding the value of the hot tub itself. Following these winterization steps, you can ensure your hot tub remains in prime condition and is ready for use when spring arrives.

When to Start the Winterizing Process

Timing is crucial. Begin the winterization process just before the temperatures consistently drop to freezing. This preemptive approach protects your hot tub from the onset of cold weather. Remember, winterization involves more than draining the water — it includes cleaning, insulating, and securing the hot tub against the elements.

Preparing to Winterize Your Hot Tub

Gather the Necessary Supplies

Before starting, gather all the essential supplies:

• Garden hose
• Wet shop vacuum
• Submersible pump
• Filter, cover, and shell cleaners
• Non-chlorine shock, chlorine or bromine
• Absorbent towels
• Antifreeze (propylene glycol-based)

Check the Manufacturer's Guidelines

Consult your hot tub's user manual for specific winterization instructions. Adhering to these guidelines is crucial for protecting your warranty and following procedures tailored to your hot tub model.

How to Winterize Your Hot Tub

Suppose you use your hot tub a few times a week or more over the winter. In that case, it's unlikely you need to winterize it. However, you should contact your hot tub manufacturer for specific guidance. On the other hand, if you will be taking several weeks off from your home spa over the colder months, here's the process for winterizing your hot tub:

Allow the Chemicals to Dissipate

Allow your hot tub to sit unused for a few days to allow the chlorine or other sanitizing agent to dissipate. Then, test the water. If the chlorine level reaches zero, you can begin winterization. If a test reveals the chlorine level is still high, wait 1-2 more days and then test the water again.

Turn Off the Power

Safety first:

• Turn off the hot tub.
• Locate the circuit breaker.
• Ensure the power supply to your hot tub is completely shut off.

This step is critical to avoid electrical hazards, especially when working with water.

Drain the Water

Draining the hot tub is a pivotal step. Attach a garden hose to the drain valve and direct the water to a suitable drainage area. If necessary, use a submersible pump for quicker water removal. Ensure all water is evacuated, including from the air blower and plumbing lines.

Run the Air Blower

If your hot tub has an air blower, run it briefly after draining it. This will expel any remaining water from the air channels, preventing freezing in these areas.

Remove Water from the Plumbing Lines

Residual water in the plumbing lines can freeze and cause damage. Use a shop vacuum to blow out any remaining water from the lines, jets, filters, and drains. This step is crucial for preventing water from freezing inside the system.

Loosen Fittings & Remove Drain Plugs

Loosen all unions and remove drain plugs from the pumps to ensure complete drainage. Verify that no water is trapped in any part of the system.

Clean the Tub

After draining, clean the hot tub's interior surface using non-abrasive tools. Please pay special attention to the jets and filters, clean them thoroughly, and replace or store them properly.

Protect the Hot Tub Cover

Clean and condition the hot tub cover to maintain its durability. Secure it tightly to protect the tub from debris and weather damage. Consider adding an extra winter cover, especially if you live in an area prone to heavy snowfall or rain.

Add Antifreeze

Choose a propylene glycol-based antifreeze suitable for hot tubs. Pour antifreeze into the jets and plumbing system to protect against freezing temperatures. This step is crucial in colder climates.

Maintaining Your Hot Tub During Winter

Winterizing your hot tub involves more than just preparation. It's essential to maintain your home spa throughout the winter.

Conduct periodic checks:

1. Regularly inspect the cover for damage and ensure it provides adequate insulation.
2. Check the water quality, balancing the pH levels as needed.
3. Monitor the hot tub's overall physical state, looking for any signs of damage or frost.

Remove snow and ice: To prevent damage, keep the hot tub cover free from snow and ice—clear snow from the area around the hot tub to ensure safe access. Use warm water or a soft brush to remove any ice—never use sharp objects, as they can damage the cover.

How to Reopen Your Hot Tub After Winter

When winter recedes, it's time to prepare your hot tub for use:

Inspect for Damage

Begin by inspecting the exterior and cover for any signs of winter damage, such as cracks or leaks. Then, check the interior, jets, filters, and drain plugs to ensure everything works. If you notice any damage, consider consulting a professional before reactivating the hot tub.

Refill and Reconnect the Hot Tub

Replace the filters if needed and refill the hot tub with fresh water. Once filled, reconnect the power supply and monitor the tub as it heats up. Reapply the cover to help speed up the heating process.

Balance the Water Chemistry

Test the water chemistry and adjust the pH, alkalinity, and hardness levels as necessary. Proper water chemistry is essential for the longevity of your hot tub and its users' comfort.

Common Mistakes to Avoid

Mistakes can undermine your winterization efforts even when you have the best intentions. Try to avoid the following:

Forgetting to turn off the power: Ensure the power is completely shut off at the circuit breaker to avoid electrical hazards during draining.

Inadequate draining: To prevent freezing and damage, ensure all water is thoroughly drained from the tub, including the plumbing lines.

Not using antifreeze: Applying antifreeze to your hot tub's plumbing system is critical for preventing freezing in colder climates. Use propylene glycol antifreeze and follow the manufacturer's guidelines for proper application.

Frequently Asked Questions

Can I leave my hot tub out in winter?

You can leave your hot tub out in winter, provided you take proper precautions. Ensure your tub is well insulated and has a cover with 4 to 6 inches of insulation. Maintain a suitable hot tub temperature that prevents water from freezing even in case of a 24-hour power outage.

Can I use my hot tub during winter?

You can utilize a hot tub all year round. Just ensure it is well-maintained and follow all necessary winterization procedures.

How can I prevent my hot tub from freezing in the winter?

A thermal blanket or an insulated cover can be beneficial. These help your hot tub retain heat, reduce energy bills, and prevent freezing even in freezing temperatures.

Should I use antifreeze in my hot tub?

Use propylene glycol antifreeze to prevent your hot tub's pipes from freezing. However, never use ethylene glycol, the type used in cars, as it is toxic and unsuitable for hot tubs.

How do I use antifreeze in my hot tub?

First, unscrew the lid and pull out the plastic module to expose the plumbing. Be careful to keep the O-ring in place. Pour the antifreeze directly into the pipe, using about 250 milliliters per valve.