As temperatures drop, outdoor cold tub owners face an important decision: Will the tub be used through the winter, or will it be shut down until spring?
Each path requires the right steps to protect your system, maintain performance, and prevent costly damage. Proper winterization is essential. This guide was created to ensure your outdoor cold tub is ready for the months ahead.
If You’re Not Using Your Cold Tub in Winter:
A cold tub that is not actively running or circulating must be fully winterized. Water left anywhere in the system (even a small amount) can freeze and damage plumbing, pumps, and internal components.
Here’s what to do:
1. Drain the Tub Completely –Remove all water from the vessel and wipe it dry with a cloth.
2. Remove the Filters – Filters located in the skimmer must be removed before drying or vacuuming the system.
3. Vacuum the Lines – Don’t rely on draining alone, residual water always remains in plumbing lines. Using a shop-vac or wet/dry vacuum, place the vacuum over each jet and pull out any remaining water in the lines. Vacuum the skimmer area as well once the filters are removed.
The goal is simple: everything must be dry. Even small amounts of trapped water can freeze and cause internal damage.
4. Use an All-Seasons Cover – Keep the tub covered with a properly fitted all-seasons cover, ensuring that the ventilation flaps are zipped up to protect the interior.
If You Plan to Use Your Tub During Winter:
Cold tubs can absolutely be used all winter, but they must be kept running.
1. Keep the Tub Plugged In & Maintain Continuous Circulation – The system needs consistent power to maintain circulation. Circulating water is far less likely to freeze. The system should run at all times when temperatures are below freezing.
2. Keep the All-Seasons Cover On – When not in use, always keep the tub covered with ventilation flaps zipped. This preserves heat, protects the vessel, and keeps snow and ice out.
Why Winter Prep Matters
Proper winterization protects both the investment and the lifespan of the tub.
A tub that won’t be used over winter must be fully drained and dried. A tub that will be used must remain powered and circulating throughout the season.
If you have questions about preparing a cold tub for colder temperatures, our team is always here to support you.
