Cold Stoic 2.0 and Siberian Winter Protocol

Our units are designed for both indoor and outdoor use and are built to withstand the winter season. While they generally perform well, there’s always the possibility of unexpected issues. To help prevent your cold plunge tank from freezing, please follow these maintenance tips:

  • Clear Snow from Vents: If it snows, make sure to clear the snow away from the vents as soon as possible. The vents need to remain unobstructed for proper airflow.
  • Keep the Unit Plugged In: Ensure your unit is plugged in and running 24/7. Continuous water flow helps prevent the water from freezing.
  • Use the Lid When Not in Use: Keep the lid on the unit when it’s not in use. The lid helps seal the tank, isolating the water from outdoor temperatures. Our tanks are highly insulated, maintaining cold water in hot weather and preventing freezing in winter.
  • Regular Filter Changes: We recommend regular filter changes to keep the unit running smoothly. If you’re experiencing prolonged freezing temperatures, it may be best to winterize the unit. This means draining all the water completely out of the unit and waiting until it warms up a bit to use your unit again.
  • Use a Renu Therapy Filter Sleeve to keep the housing protected. Available for PURCHASE HERE.
  • During colder months, set the temperature to 45°F to help prevent freezing in colder weather.

Weather may require the unit to be winterized by following the steps below:

Winterizing Instructions – Cold Stoic 2.0 & Siberian

Drain the tank:

  1. Turn off the power switch on the power strip inside the Mechanics Bay, in the top right corner. (How To Drain Your Cold Stoic 2.0 and Siberian Video)
  2. Close both red handled shut off valves at the pump suction and the water return fittings. The red handles should be perpendicular to plumbing. 
  3. Unscrew the blue filter housing using the included filter wrench. Turn the handle to the left to unscrew. Remove the filter cartridge and wash or replace as needed. Be careful not to lose the black O-ring inside.
  4. Put the blue filter housing back on, just tight enough not to leak but not so tight you can't get it back off.
  5. Attach a garden hose to the hose spigot at the top of the filter, and secure the other end of the hose to a safe drain location. Open hose bibb valve.
  6. Open red handled valve at the pump suction, at the bottom rear of the mechanics bay. Handle should be parallel with plumbing.
  7. Turn unit back on at the power strip switch. Water should be pumped out the hose.
  8. Allow to drain until the pump stops pumping water. The sound the pump is making will change as well.
  9. Shut off unit at power switch.
  10. Close hose spigot valve and remove hose.
  11. Open the red handled valve at the water return fitting.
  12. Drain rest of water out of tub using cups, old towels, shop vac, whatever works.

To fully winterize your Cold Plunge:

  1. Use a wet/dry vac to suck all water from the plumbing lines and chiller reservoir. Place the vacuum nozzle directly over the water return fitting in the tank until all water is removed.
  2. Remove the filter cartridge and store away. Replace the filter housing onto the cap loosely.
  3. Be sure all valves in the circulation plumbing are open.
  4. Unplug the unit from the wall outlet.

Getting Your Tank Back Up and Running After the Winter

  1. Replace new clean filters into the filter housing and reattach the filter housing (tight enough not to leak but not so tight you can't remove it again).
  2. Be sure all circulation valves are in the open position, and all drain valves are closed.
  3. Fill unit with water.
  4. Plug in and turn unit on and check for leaks.
  5. Set desired temperature.

⚠️ Disclaimer: Cracked components are not covered by the warranty due to freezing over. It is the customer’s responsibility to prevent the unit from freezing over.