How to Properly Winterize Your STX Motorhome

As temperatures drop and the season slows down, it’s essential to prepare your motorhome for winter. Correct winterization protects your water system, prevents frost damage and ensures your STX is ready for effortless use once spring returns. Below, we guide you through the recommended steps to safely drain and secure your water system.

Why Winterization Matters

Water left inside pipes, taps or tanks can freeze and expand, causing cracks, leaks or expensive repairs. A methodical winterization process ensures that your STX motorhome remains in perfect condition, whether stored for a few weeks or for the full winter season.

What You’ll Need

To winterize the water system, prepare the following equipment:

• Air compressor with tire blower attachment

Step-by-Step Winterization Process

1. Prepare the Motorhome

Let the vehicle run for around 10 minutes. This builds enough air pressure to open all valves during draining.

2. Switch Off Water Systems

Turn off the water pump and switch off the heating system (boiler).

3. Empty the Freshwater Tank

4. Open All Taps

Open every tap inside the motorhome:
— Kitchen
— Bathroom
— Shower
— Garage

Both hot and cold lines should remain open.

5. Drain the Water Collector

Locate the collector and find the rubber tube equipped with an air valve.

6. Remove Remaining Water With Air

Attach the air blower to the valve and blow until water stops coming out of every tap—only air should exit.
This ensures all lines are completely empty.

7. Flush and Empty Waste Systems

• Flush the toilet
• Empty both the grey and black water tanks

8. Leave All Taps Open

This prevents pressure build-up and ensures full drying during storage.

While Your Motorhome Is Stored

To avoid issues when bringing the vehicle back into use, it’s strongly recommended to:

• Keep the motorhome connected to shore power so the Victron system can maintain battery charge.
• Set the Kabola heater to electric mode and maintain interior temperatures between 10° and 15°C.
• Regularly check your onboard systems.

Winter is always a good season to bring your STX Motorhome for an annual checkup. We’ll prepare your motorhome for a hibernation while also making sure it is ready for your next spring adventures! Simply call our Stephex Service Center to book a time.

Ready for Another Season

A properly winterized motorhome eliminates unnecessary wear and ensures your STX remains in peak condition. With just a small investment of time, you protect the engineering, comfort and quality that define every STX Motorhome.