Winterizing your RV is crucial to prevent costly damage from freezing water. One of the most important steps is completely blowing out all water from your RV's plumbing lines. This prevents expansion from freezing water that can burst pipes and cause significant damage. This guide will walk you through the process effectively and safely.
What You'll Need to Blow Water Out of RV Lines
Before you begin, gather the necessary supplies. You'll need:
- Air compressor: This is the heart of the process. You'll need one capable of delivering at least 30 PSI, though higher pressure might be necessary depending on your RV's plumbing system length and complexity. A portable compressor is ideal for this task.
- Air chuck with a quick-connect fitting: This allows you to easily connect the air compressor to your RV's water system. Make sure the fitting is compatible with your RV's city water inlet.
- Blowout plugs (optional but highly recommended): These are typically inserted into low-lying points in your plumbing system (like low points under sinks and in the water heater bypass) to ensure complete water removal. They're inexpensive and prevent water from pooling.
- Water pressure regulator: This is crucial to prevent over-pressurization of your water lines. Set it to a safe level, typically around 30-40 PSI. Never exceed your RV manufacturer's recommended pressure.
- Towels: Have these handy to wipe up any potential spills or leaks.
- Safety glasses: Protecting your eyes is always a good practice when working with compressed air.
How to Blow Out Your RV Water Lines Step-by-Step
1. Prepare Your RV:
- Turn off all water sources: This includes the water pump, city water hookup, and any external water sources.
- Drain your water heater: Consult your RV's manual for the specific procedure. This often involves opening a drain valve at the bottom of the tank.
- Open all low-point drains: These are usually located under sinks and other low points in your plumbing system.
- Open all faucets and shower heads: This allows air to flow freely through the system.
- By-pass the water heater: Engage the water heater bypass valves, preventing water from remaining trapped in the heater.
2. Connect the Air Compressor:
- Attach the regulator to the air compressor: This is a critical step to prevent damage to your RV's plumbing.
- Connect the air chuck to the regulator's output: Ensure a secure and airtight connection.
- Connect the air chuck to the city water inlet: This is the external connection point on your RV.
3. Blow Out the Lines:
- Slowly increase the air pressure: Start at a lower PSI (around 30 PSI) and gradually increase it as needed. Monitor for leaks throughout the process.
- Listen for changes in air sound: As water is forced out, the sound of air will change. When the sound becomes consistent and air is flowing freely, you've likely removed most of the water.
- Check all faucets and showerheads: Make sure air is flowing freely from every fixture.
- Use blowout plugs: If using blowout plugs, insert them into low points to prevent water from settling there.
4. Final Checks and Completion:
- Sanitize your system: After blowing out the lines, consider sanitizing your RV's water system to prevent the growth of bacteria.
- Store your RV in a suitable location: When winterizing, store your RV in a protected area, minimizing exposure to extreme temperatures.
5. Addressing Leaks or Problems
If you encounter problems like persistent leaks or difficulty clearing water, check for:
- Clogged lines: Try flushing the lines with a mixture of water and vinegar.
- Faulty valves: If you suspect a problem with a valve, consider seeking professional help.
- Frozen lines: If your RV wasn't fully drained, you might have frozen lines—this requires professional attention.
Frequently Asked Questions (FAQ)
How long does it take to blow water out of RV lines?
The time required varies depending on your RV's plumbing system size and complexity, but it generally takes 15-30 minutes.
What PSI should I use to blow water out of my RV lines?
Start with around 30 PSI and gradually increase it if necessary, but never exceed your RV manufacturer's recommended pressure. A pressure regulator is essential to prevent over-pressurization.
Can I use a leaf blower to blow water out of my RV lines?
While a leaf blower might seem like an option, it's generally not recommended. Leaf blowers lack the consistent pressure needed for effective water removal and might not reach all parts of your plumbing system. An air compressor is essential for reliable winterization.
What happens if I don't blow water out of my RV lines?
Leaving water in your RV's plumbing during freezing temperatures can cause pipes to burst, leading to costly repairs and potential damage to your RV.
How do I know if I've successfully blown all the water out?
Air should flow freely from all faucets and shower heads. The sound of air flowing should become consistent once the water is removed. Check low points in your plumbing system to confirm no water remains.
By following these steps and taking necessary precautions, you can effectively blow water out of your RV lines, protecting your investment from winter's damaging effects. Remember to always consult your RV's owner's manual for specific instructions and recommendations.
