How To Blow Out Camper Water Lines?

Camper water lines are the pipes that carry water throughout a recreational vehicle. They supply water for various purposes like drinking cooking and showering. These lines are typically made of durable materials to withstand the rigors of travel and outdoor conditions.

Camper water lines are the unsung heroes of your outdoor adventure. They quietly deliver the essential water for cooking cleaning and quenching your thirst. Here is a question arise how to blow out camper water lines? Like veins in a body these lines ensure a smooth flow of water keeping your trip hassle free.

Camper water lines are essential tubes that carry water throughout a camper. They connect to the fresh water tank and supply water to sinks showers and toilets. It’s important to regularly check for leaks or damage to ensure a steady water supply during your travels. If you’re unsure about maintenance consulting a professional can help keep your camper’s water system in top shape.

Tools and Materials Needed

Tools and Materials Needed

To blow out camper water lines, you’ll need a few tools and materials. First, make sure you have an air compressor with adjustable pressure. You’ll also need an RV blowout plug or adapter to connect to the city water inlet. Additionally, have a wrench or pliers on hand to secure the plug if necessary. It’s a good idea to have some RV antifreeze Teflon tape and a bucket or container for the process.

Before you begin, gather the following tools and materials:


  • Air compressor with adjustable pressure
  • RV blowout plug or adapter
  • Wrench or pliers
  • Screwdriver


  • RV antifreeze
  • Teflon tape (optional)
  • Bucket or container
Air compressor with adjustable pressureRV antifreeze
RV blowout plug or adapterTeflon tape (optional)
Wrench or pliersBucket or container

Step by Step Guide

A step by step guide is a set of instructions that breaks down a process into easy-to-follow stages naturally. It helps you complete tasks or activities in a clear and organized manner. Each step provides specific actions or information to guide you towards achieving a particular goal. Following a step by step guide such as how to get in a locked camper can make complex tasks much simpler and more manageable.

Prepare the Camper

  • Ensure the camper is parked on a level surface.
  • Disconnect any external water sources and drain the freshwater tank.

 Turn Off Appliances

  • Shut off the water heater and all other water-based appliances inside the camper.

Drain Water Tanks

  • Open all the faucets, including both hot and cold, and let them run until no water comes out.

Flush the toilet to remove water from the lines.

Connect the Air Compressor

  • Attach the RV blowout plug or adapter to the city water inlet of your camper. Use a wrench or pliers to secure it if necessary.

Connect the other end of the plug to the air compressor.

Set the Air Compressor Pressure

  • Start with a low pressure setting, around 30 PSI, and gradually increase if needed. The goal is to maintain a steady flow of air without risking damage to the lines.

Blow Out the Water Lines

  • Begin with the furthest fixture from the city water inlet, typically the bathroom faucet or shower. Turn it on and allow the compressed air to blow out the water. Do this for a few minutes until no water comes out.
  • Move on to the next closest fixture and repeat the process.

Flush Toilets and Outdoor Showers

Flush Toilets and Outdoor Showers
  • For toilets, hold down the flush lever to ensure all water is removed from the bowl and tank. Do the same for any outdoor showers or fixtures.

Empty P Traps

  • P-traps are U-shaped pipes beneath sinks and showers that can hold water and potentially freeze. Remove the P-trap and allow any remaining water to drain out.

Add RV Antifreeze

  • If you want an extra layer of protection, pour RV antifreeze into drains, toilets, and tanks. This will further safeguard against freezing.

Seal any Openings

  • Use Teflon tape to seal any exposed threads or openings to prevent air leakage.

Additional Tips

Always use caution when working with an air compressor. Start with low pressure and gradually increase to avoid damage. Always wear safety goggles when working with an air compressor to protect your eyes.

  • If you’re unsure about any step, consult your camper’s owner’s manual for specific instructions.
  • Consider labeling the valves and fixtures for easy identification during the winterizing process.
  • Store your tools and materials in a designated area to keep them organized for future use.
  • If using RV antifreeze, ensure it is safe for all fixtures and tanks.
  • Double check that all faucets and fixtures are turned off before blowing out the lines.


What is the purpose of blowing out camper water lines?

Blowing out camper water lines removes all water to prevent freezing and potential damage.

What tools are needed for this process?

You’ll need an air compressor, RV blowout plug, wrench or pliers, and optional Teflon tape.

Is RV antifreeze necessary?

It’s optional but provides extra protection against freezing in low temperatures.

How do I know if I’ve successfully blown out the lines?

The lines are successfully blown out when no water comes out of the fixtures during the process.


In conclusion, knowing how to properly blow out camper water lines is a crucial skill for any camper owner especially in preparation for winter. By following the step by step guide and using the recommended tools and materials, you can effectively remove all water from the lines tanks and fixtures, preventing potential damage from freezing temperatures.

Remember to exercise caution when working with the air compressor starting with low pressure and gradually increasing if necessary. Consider using RV antifreeze for an extra layer of protection. Taking these measures ensures that your camper will be in optimal condition when warmer weather returns ready for your next adventure.

Don’t underestimate the importance of this process in maintaining the longevity and functionality of your camper’s water system. With proper care and attention, you can enjoy worry free travels in your camper for years to come.

Leave a Comment