Winterizing your RV is crucial to prevent costly damage from freezing pipes. A key part of this process is completely blowing water out of your RV's water lines. This prevents expansion from freezing water, which can rupture pipes and cause significant damage. This guide will walk you through the process step-by-step, answering common questions along the way.
What Tools Do I Need to Blow Water Out of My RV Lines?
You'll need a few essential tools to effectively blow water out of your RV lines. These include:
- Air compressor: This is the heart of the operation. You'll need one capable of delivering at least 30 PSI (pounds per square inch), though higher is better for ensuring complete water removal. Consider the size of your RV's water system when choosing a compressor.
- Air chuck with a quick-connect fitting: This allows you to quickly and easily attach the air compressor to your RV's water lines. Make sure it's compatible with your system.
- Blow gun: This is essential for directing the compressed air into your lines. A long, flexible blow gun is ideal for reaching those hard-to-reach places.
- Water pressure gauge: While not strictly necessary, a water pressure gauge can be helpful to monitor the water pressure as you blow out the lines, ensuring consistent air flow.
- RV antifreeze: (Only if you choose the antifreeze method - discussed below). You'll need a non-toxic type specifically designed for RVs.
How Do I Blow Water Out of My RV Water Lines?
The process is fairly straightforward, but careful attention to detail is important to prevent any issues.
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Turn off all water sources: Begin by turning off the water pump inside your RV and disconnecting from any external water sources (city water hookups).
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Open all faucets and low-point drains: Open all faucets throughout your RV, including those in the kitchen, bathroom, and any outdoor showers. Also, locate and open your low-point drains (usually found under sinks or near water heater). This allows air to flow freely through the lines.
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Connect the air compressor: Connect the air chuck to the low-point drain closest to your water pump. This is typically the most effective starting point.
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Turn on the compressor: Turn on your air compressor and allow it to reach its maximum PSI. Monitor the pressure gauge to ensure it's functioning correctly.
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Monitor air flow: Listen closely to the sound of air escaping from the open faucets. As the air pushes water out, the sound will change as the air becomes less and less saturated with water.
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Continue until no more water is visible: Continue this process until water is no longer visible from any of the open faucets. It's essential to ensure complete water removal.
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Disconnect the air compressor: Once you're certain all water is removed, disconnect the air compressor and securely store it.
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Close all faucets and low point drains: Close all faucets and low point drains to prepare your RV for winter storage.
What if I Don't Have an Air Compressor?
While using an air compressor is the most effective method, you can also winterize using RV antifreeze. This involves opening all your faucets and low point drains, then carefully pouring antifreeze into each fixture until it runs out of all open faucets. This method is slower and requires more antifreeze, but it's an option if you don't have an air compressor available.
How Often Should I Blow Water Out of My RV Lines?
You should blow water out of your RV lines whenever you expect freezing temperatures, typically during the fall and winter months.
Can I use a shop vac in reverse to blow water out of my RV lines?
While you might think a shop vac in reverse could work, it's generally not recommended. Shop vacs aren't designed for the high pressure required to effectively remove water from RV lines, and they may not have sufficient power to clear all the lines.
What are the low-point drains on my RV?
Low-point drains are strategically placed drains located at the lowest points in your RV's plumbing system. Their purpose is to allow water to drain completely, preventing damage from freezing. These are usually found under sinks or near the water heater.
What happens if I don't blow the water out of my RV lines?
If you don't blow the water out of your RV lines before freezing temperatures, the expanding ice can cause your pipes to crack or burst. This can lead to significant damage, costly repairs, and potentially ruin your RV vacation plans for the future.
By carefully following these steps, you can effectively protect your RV plumbing system from winter damage and ensure a smooth start to your next RV adventure. Remember, preventative maintenance is key to preserving your investment and enjoying years of trouble-free RVing.
