Winterizing your RV is crucial to prevent costly damage from freezing water. One of the most important steps in this process is blowing out your water lines. This guide will walk you through the process, answering common questions and providing helpful tips for a successful winterization.
What Does it Mean to "Blow Out" Water Lines?
"Blowing out" water lines refers to using compressed air to force all the water out of your RV's plumbing system. This prevents water from freezing and expanding, which can cause pipes to burst and lead to significant damage. It's a preventative measure that protects your investment.
What Tools Do I Need to Blow Out My RV Water Lines?
You'll need a few essential tools to effectively blow out your RV water lines:
- Air Compressor: This is the most crucial tool. You'll need one that can deliver sufficient air pressure (at least 30 PSI, but ideally higher). A small, portable compressor is usually sufficient.
- Blow Gun: This attaches to your air compressor and allows you to direct the compressed air into your plumbing system. Make sure it's designed for high pressure.
- Low-Pressure Regulator: This is highly recommended to avoid damaging your pipes with excessive air pressure. It lets you control the PSI precisely.
- Water Hose: You'll need this to initially drain as much water as possible from your system.
- RV Antifreeze (optional): Though blowing out the lines is the primary method, adding antifreeze afterwards adds an extra layer of protection.
- Safety Glasses: Always protect your eyes when working with compressed air.
How to Blow Out Your RV Water Lines: A Step-by-Step Guide
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Prepare Your RV: Turn off all water pumps and disconnect from any external water sources. Open all faucets and low-point drains to allow gravity to drain as much water as possible.
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Connect the Air Compressor and Blow Gun: Securely attach the blow gun to your air compressor. Make sure all connections are tight and secure to avoid leaks.
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Connect the Blow Gun to the Water System: Locate your water pump's city water inlet. Attach the blow gun to this inlet. If you have a low-pressure regulator, attach it between the compressor and the blow gun.
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Turn On the Air Compressor: Slowly increase the air pressure to your desired level (around 30-60 PSI). Never exceed the maximum pressure rating of your RV's plumbing system.
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Monitor the Airflow: As the air flows through the system, you'll hear the sound of air escaping through the open faucets and drains. Continue until all the water is expelled and only air is escaping.
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Check All Faucets and Low-Point Drains: Once you've blown out the main lines, carefully check each faucet and low-point drain. Make sure that air is escaping freely from all points; this indicates all water has been removed.
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Disconnect the Blow Gun and Air Compressor: Once you're finished, carefully disconnect the blow gun from the city water inlet. Turn off the air compressor.
What if I Don't Have an Air Compressor?
While an air compressor is the most effective method, you can try to use a hand-held pump designed for this purpose. However, this method is slower and less efficient, and it may not completely remove all the water from your lines.
What About My Water Heater?
Your water heater requires special attention. It's usually necessary to drain the water heater completely, then blow out its lines using the same air compressor method. Consult your RV's manual for specific instructions on draining and winterizing your water heater.
Should I Use RV Antifreeze After Blowing Out the Lines?
While blowing out the lines effectively removes most of the water, adding RV antifreeze provides an extra layer of protection against freezing temperatures. This is especially important in extremely cold climates.
What are the signs of a burst pipe in my RV due to freezing?
Signs of a burst pipe include noticeable leaks, dampness or water damage in unexpected areas, and the smell of mildew. If you suspect a burst pipe, quickly locate the source, shut off the water supply and contact an RV repair service.
How often should I blow out my RV water lines?
You should blow out your RV water lines before every winter or anytime the temperature is expected to drop below freezing.
By following these steps, you can effectively blow out your RV's water lines and prevent costly damage during the winter months. Remember to always consult your RV's owner's manual for specific instructions and safety precautions.
