How To Drain Rv Water Lines

How to Drain RV Water Lines


If you own an RV, it is essential to properly maintain and winterize it to ensure its longevity. One crucial step in winterizing an RV is draining the water lines. This process helps prevent freezing and potential damage to the plumbing system. In this article, we will guide you through the steps of how to drain RV water lines effectively.

Tools and Materials You’ll Need

Before you start draining your RV water lines, ensure that you have the following tools and materials:

  • Air compressor or water pump
  • RV antifreeze
  • Bucket or container
  • Adjustable wrench

Step 1: Turn off the Water Supply

Before attempting to drain the water lines, turn off the water supply to your RV. This can usually be done by closing the main water valve or disconnecting the water hose.

Step 2: Open All Faucets and Drains

To allow the water to flow freely and drain from the RV’s water lines, open all faucets, both hot and cold, as well as any drains. This step ensures that all water is removed from the system.

Step 3: Drain the Water Heater

The next step is to drain the water heater. Locate the drain plug or valve at the bottom of the water heater tank and attach a hose. Open the valve to allow the water to drain. Be cautious as the water may be hot.

Step 4: Remove Exterior Connections

Disconnect any exterior connections, such as hoses or filters, attached to the RV’s plumbing system. Ensure that these connections are drained properly to avoid any water buildup.

Step 5: Use Compressed Air or a Water Pump

Now it’s time to remove any remaining water from the RV water lines using either an air compressor or a water pump. Connect the air compressor or water pump to the city water inlet or the RV’s freshwater tank. Open each faucet one at a time, starting with the highest point, until only air comes out. This process will force any water out of the lines.

Step 6: Add RV Antifreeze

Once all the water has been drained from the RV water lines, it is recommended to add RV antifreeze to prevent any remaining water from freezing and causing damage during winter storage. Follow the manufacturer’s instructions on how to properly add the antifreeze to your RV’s plumbing system.

Frequently Asked Questions Of How To Drain Rv Water Lines

How Often Should I Drain Rv Water Lines?

Drain your RV water lines at least once a month to prevent buildup and ensure fresh water supply.

What Tools Do I Need To Drain Rv Water Lines?

You will need a wrench, pliers, a bucket, and antifreeze to properly drain your RV water lines.

Can I Use Regular Antifreeze To Drain Rv Water Lines?

No, make sure to use RV-specific antifreeze as regular antifreeze can damage your RV’s plumbing system.

How Do I Drain The Water Lines In My Rv?

To drain your RV water lines, turn off the water supply, open all faucets and drains, and use a hose to drain the remaining water.

What Are The Consequences Of Not Draining Rv Water Lines?

Not draining your RV water lines can lead to freezing and damage to the plumbing system, resulting in costly repairs.


Properly draining your RV water lines is an essential step in winterizing your RV. By following the steps outlined in this article, you can ensure that your RV’s plumbing system is protected from freezing temperatures. Regular maintenance and winterization will help prolong the life of your RV and prevent costly repairs in the future. Take the time to care for your RV properly, and it will reward you with many years of adventure on the road.

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