How to Dewinterize Your Travel Trailer: A Comprehensive Guide

Dewinterizing a travel trailer is the process of preparing it for use after it has been stored in cold weather, typically involving inspecting and restoring the water system and other components to their operational state. By carefully following a step-by-step process, you can ensure a safe and enjoyable camping season.

Table of Contents

1. The Importance of Dewinterizing

After months of winter storage, your travel trailer needs a thorough checkup to prevent damage and ensure a worry-free travel experience. Failing to dewinterize properly can lead to burst pipes, water leaks, malfunctioning appliances, and potentially costly repairs. Proper dewinterization sets the stage for a safe and comfortable camping season.

2. Essential Supplies and Tools

Before you begin, gather the necessary supplies. Having everything on hand will streamline the dewinterizing process.

Water Heater Bypass Valve: This is essential for preventing antifreeze from entering your water heater.
Water Hose (Drinking Water Safe): Specifically designed for potable water.
Water Pressure Regulator: To protect your plumbing from over-pressurization.
Non-Toxic RV Antifreeze: If you used antifreeze to winterize, you’ll need to flush it out. (Avoid using automotive antifreeze)
Household Bleach (Unscented): For sanitizing your water system.
Wrench Set: Various sizes for connecting and disconnecting plumbing fittings.
Screwdrivers (Phillips and Flathead): For accessing and inspecting components.
Water Heater Drain Plug Wrench: Specifically sized for your water heater drain plug.
Bucket: For collecting drained water and antifreeze.
Gloves and Safety Glasses: To protect your hands and eyes.
RV Toilet Bowl Cleaner: To refresh your toilet.
Basic Cleaning Supplies: For general cleaning and wiping down surfaces.

3. Step-by-Step Dewinterizing Process

Follow these steps to thoroughly dewinterize your travel trailer:

3.1. Inspect Exterior and Interior

Begin with a visual inspection. Look for any signs of damage that may have occurred during storage.

Exterior: Check the roof for cracks or leaks, inspect the tires for dry rot or flat spots, and examine the seals around windows and doors.
Interior: Look for signs of leaks, mold, or pest infestations. Open cabinets and drawers to check for any lingering moisture.

3.2. Flushing the Water System

This is the most crucial part of dewinterizing. Thoroughly flushing the water system is essential to remove all traces of antifreeze and sanitize the system.

Bypass the Water Heater: Ensure the bypass valve is in the “bypass” position, preventing antifreeze from entering the tank.
Open All Faucets: Open both hot and cold water faucets, including the shower and toilet, and let the water run until it runs clear. This might take a while, especially if you used a lot of antifreeze. Don’t forget the outside shower, if your trailer has one.
Flush the Toilet: Flush the toilet several times to clear the lines.
Reconnect the Water Heater: Once the water runs clear from all faucets, switch the water heater bypass valve to the “normal” position, allowing the water heater to fill. Replace the drain plug on the water heater.
Test the Water Heater: Turn on the water heater (following the manufacturer’s instructions) and check for leaks.
Close All Faucets: Once satisfied that the water heater is functioning properly, close all faucets.

3.3. Sanitizing the Water System

Sanitizing ensures that your water system is free of bacteria and contaminants.

Prepare the Bleach Solution: Mix 1/4 cup of household bleach for every 15 gallons of tank capacity. For example, a 30-gallon tank would require 1/2 cup of bleach.
Pour the Bleach into the Fresh Water Tank: Use a funnel to pour the bleach solution into the fresh water tank.
Fill the Fresh Water Tank with Water: Fill the tank completely with fresh water.
Turn on the Water Pump: Turn on the water pump to circulate the bleach solution throughout the plumbing system.
Open All Faucets: Open all faucets, including the shower and toilet, until you smell bleach. Then, close all faucets and let the solution sit in the system for at least 4 hours, but no more than 12.
Drain and Flush the System: After the sanitizing period, drain the fresh water tank and flush the entire system with fresh water until the bleach smell is gone. This may take several flushes.

3.4. Inspecting and Testing Appliances

Check all appliances to ensure they are working correctly.

Refrigerator: Clean the refrigerator and freezer. Turn on the refrigerator and check that it cools properly on both propane and electric modes.
Stove and Oven: Light the burners on the stove and check the oven. Ensure there are no gas leaks.
Water Heater: As previously mentioned, test the water heater to ensure it heats water correctly.
Air Conditioner: Check that the air conditioner is cooling properly. Replace the filter if needed.
Furnace: Turn on the furnace and check for proper operation. Make sure the vents are clear.
Propane System: Have a professional inspect the propane system for leaks.

3.5. Battery and Electrical System Check

Ensure your batteries are fully charged and in good condition.

Battery: Check the battery terminals for corrosion and clean them if necessary. Charge the battery fully.
Electrical System: Test all electrical outlets and lights. Check the fuses and circuit breakers.

3.6. Tire Inspection and Maintenance

Proper tire maintenance is crucial for safe towing.

Tire Pressure: Check the tire pressure and inflate to the recommended pressure (found on the tire sidewall or in your owner’s manual).
Tire Condition: Inspect the tires for cracks, bulges, or uneven wear.
Wheel Bearings: Consider having your wheel bearings repacked by a professional.

3.7. Lubrication

Lubricate all moving parts to ensure smooth operation.

Hitch: Lubricate the hitch ball and coupler.
Stabilizer Jacks: Lubricate the stabilizer jacks.
Door Hinges: Lubricate the door hinges.

3.8. Cleaning and Detailing

Finally, give your travel trailer a thorough cleaning.

Interior: Clean all surfaces, including countertops, floors, and windows.
Exterior: Wash the exterior of the trailer to remove dirt and grime.
Waxing: Consider waxing the exterior to protect the finish.

4. Post-Dewinterization Checklist

After completing the dewinterizing process, use this checklist to ensure you haven’t missed anything:

[ ] Verify the water heater is filled and functioning properly.
[ ] Confirm all faucets are running clear and without leaks.
[ ] Check that all appliances are working correctly.
[ ] Inspect and test the battery and electrical system.
[ ] Inflate tires to the recommended pressure.
[ ] Lubricate all moving parts.
[ ] Clean and detail the interior and exterior.

5. Frequently Asked Questions (FAQs)

Here are some frequently asked questions about dewinterizing a travel trailer:

5.1. FAQ 1: Can I use regular automotive antifreeze in my travel trailer?

No, never use automotive antifreeze in your travel trailer’s water system. It is highly toxic and not designed for potable water systems. Always use non-toxic RV antifreeze specifically designed for this purpose.

5.2. FAQ 2: How do I know if I’ve completely flushed out the antifreeze?

The water will run clear and no longer have a pink or reddish tint (if using pink antifreeze). You shouldn’t smell or taste any antifreeze either. Running a significant amount of water through each faucet is key.

5.3. FAQ 3: What if I find a leak during the dewinterizing process?

Immediately shut off the water supply and identify the source of the leak. Depending on the severity, you may be able to temporarily fix it with sealant or tape. However, it is best to consult a professional for a permanent repair.

5.4. FAQ 4: How often should I sanitize my water system?

It is recommended to sanitize your water system at least once a year, typically after dewinterizing and before storing the trailer for the winter. You should also sanitize if you suspect contamination.

5.5. FAQ 5: What if my water pump doesn’t work after dewinterizing?

Check the fuses and circuit breakers associated with the water pump. Also, ensure the pump is receiving power and that the inlet strainer is clean. If the pump still doesn’t work, it may need to be replaced.

5.6. FAQ 6: How do I bypass the water heater?

Most travel trailers have a bypass valve system. The valve positions will vary depending on the manufacturer, but typically there are two or three valves located near the water heater. Consult your owner’s manual for specific instructions.

5.7. FAQ 7: What should I do if I find mold in my travel trailer?

Mold can be a serious issue. Clean the affected area with a mold and mildew cleaner. Ensure proper ventilation to prevent future mold growth. If the mold infestation is extensive, consult a professional mold remediation service.

5.8. FAQ 8: How do I check my propane system for leaks?

The safest way to check for propane leaks is to use a soapy water solution. Mix dish soap with water and apply it to all propane connections. If bubbles appear, there is a leak. Never use a flame to check for leaks. It is best to have a professional inspect your propane system.

5.9. FAQ 9: What tire pressure should I use for my travel trailer tires?

The recommended tire pressure is listed on the tire sidewall. Always inflate your tires to the recommended pressure, not the maximum pressure.

5.10. FAQ 10: How do I store my water hose properly to prevent contamination?

Drain the water hose completely after each use and store it in a clean, dry place. Consider using a hose bag or container to protect it from dirt and debris.

5.11. FAQ 11: What should I do with the RV antifreeze after I flush it out?

RV antifreeze is typically non-toxic and can be disposed of in your household drain system. However, check your local regulations to ensure proper disposal methods.

5.12. FAQ 12: Can I skip a step in the dewinterizing process?

It is strongly recommended to follow all steps in the dewinterizing process. Skipping steps can lead to damage, contamination, or safety hazards. A thorough dewinterization is essential for a safe and enjoyable camping season.

By following these steps and addressing these common questions, you can confidently dewinterize your travel trailer and prepare it for a season of unforgettable adventures. Remember to always consult your owner’s manual for specific instructions related to your particular make and model.