Winterizing your Airstream is crucial for preventing costly damage from freezing temperatures and ensuring a smooth start to your next travel season; proper preparation protects your plumbing, appliances, and overall investment. This guide provides a step-by-step approach to thoroughly preparing your Airstream for the winter months.
Draining the Water System: The Foundation of Winterization
The core principle of winterizing your Airstream is to completely remove all water from the plumbing system. Water expands when it freezes, and that expansion can crack pipes, damage faucets, and even rupture your water heater.
Step 1: Drain the Fresh Water Tank
Begin by draining your fresh water tank. Locate the drain valve, usually underneath the trailer near the tank. Open the valve and allow all the water to drain completely. It’s helpful to tilt the trailer slightly to encourage complete drainage. Once drained, close the valve.
Step 2: Drain and Bypass the Water Heater
This is a critical step. First, disconnect the power supply to the water heater – both electric and propane – to prevent it from accidentally energizing when dry. Locate the water heater drain plug, typically on the lower side of the tank. Open the plug and let the water drain out. After the water is drained, install the water heater bypass kit (if your Airstream has one; if not, consider installing one for future winterizations). The bypass kit allows you to isolate the water heater from the rest of the plumbing system, preventing antifreeze from entering the tank (which would be difficult to flush out). If you don’t have a bypass, you’ll need to drain and then thoroughly flush the water heater in the spring.
Step 3: Drain the Water Lines
Next, open all the faucets – both hot and cold – in your Airstream, including the shower, bathroom sink, and kitchen sink. Open the low-point drains. These drains, usually located near the axles underneath the trailer, are designed to drain the lowest points in your plumbing system. Let all the water drain until the lines are empty.
Step 4: Drain and Flush the Toilet
Flush the toilet thoroughly to remove any remaining water from the bowl and the holding tank. You may need to use a toilet bowl brush to ensure all residue is removed.
Step 5: Empty the Holding Tanks (Black and Gray)
This is essential for sanitation and preventing odors during storage. Thoroughly drain and flush both the black and gray water tanks. Use a black tank flush system if you have one. If not, consider using a tank rinser to clean the tanks effectively.
Introducing RV Antifreeze: Protecting the Plumbing
Once the water system is drained, you’ll introduce RV antifreeze to protect the remaining parts of the system from freezing. Never use automotive antifreeze – it is toxic and can contaminate your water system.
Step 6: Bypass the Water Heater (if you haven’t already)
Double-check that your water heater is bypassed! This is incredibly important.
Step 7: Introduce RV Antifreeze
There are two main methods for introducing RV antifreeze:
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Using a Water Pump Converter Kit: This is the preferred method. A converter kit allows you to draw antifreeze directly from the bottle into the water pump. Disconnect the water intake line from the fresh water tank and connect it to the antifreeze hose. Turn on the water pump and run each faucet (both hot and cold) until you see pink antifreeze flowing out. Don’t forget the toilet and outside shower (if applicable).
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Pouring Antifreeze into the Fresh Water Tank: While less ideal, this method involves pouring RV antifreeze directly into the fresh water tank. Then, turn on the water pump and run each faucet until you see pink antifreeze. This method uses more antifreeze and requires you to flush the fresh water tank thoroughly in the spring.
Step 8: Pour Antifreeze into Drain Traps
Pour RV antifreeze into all drain traps (sinks, shower, and toilet) to prevent them from freezing. A cup or two in each drain should be sufficient.
Step 9: Protect the Toilet
Pour about two cups of RV antifreeze into the toilet bowl and flush it, allowing it to circulate through the plumbing.
Additional Winterization Steps: Covering All Bases
While draining the water system is the primary focus, several other steps will ensure your Airstream is fully protected for the winter.
Step 10: Disconnect the Battery
Disconnect the battery cables to prevent parasitic drain and extend the battery’s life. Store the battery in a cool, dry place. If possible, trickle-charge the battery periodically throughout the winter to keep it fully charged.
Step 11: Remove Food Items
Remove all food items from the refrigerator, freezer, and pantry to prevent spoilage and potential pest infestations. Clean the refrigerator and freezer thoroughly. Prop the refrigerator door open to prevent mildew growth.
Step 12: Seal Openings and Prevent Pests
Seal any potential entry points for pests, such as gaps around windows, doors, and vents. Use caulk or expanding foam to fill any cracks. Consider placing mouse traps or rodent repellent inside the trailer. Cover the air conditioner unit to protect it from the elements.
Frequently Asked Questions (FAQs)
FAQ 1: How much RV antifreeze do I need?
The amount of antifreeze required depends on the size of your Airstream and the length of the plumbing lines. Typically, 2-3 gallons of RV antifreeze is sufficient for a standard-sized Airstream. Using a water pump converter kit helps minimize waste and allows for more precise usage.
FAQ 2: Can I use compressed air to blow out the water lines instead of antifreeze?
While using compressed air to blow out the water lines can help remove some water, it’s not a reliable substitute for RV antifreeze. Pockets of water can remain in the lines and freeze. Antifreeze provides a more thorough and reliable protection. Using compressed air carries the risk of damaging the plumbing if the pressure is too high.
FAQ 3: What do I do if I can’t find my low-point drains?
Consult your Airstream owner’s manual for the exact location of your low-point drains. If you’re still unable to locate them, a qualified RV technician can help you identify and access them.
FAQ 4: My Airstream has a washing machine. How do I winterize that?
Run a short wash cycle with RV antifreeze in the detergent dispenser. This will circulate the antifreeze through the washing machine’s plumbing. Consult your washing machine’s manual for specific winterization instructions.
FAQ 5: Should I cover my Airstream for the winter?
Covering your Airstream can protect it from the elements, but it’s crucial to use a breathable cover designed specifically for RVs. A non-breathable cover can trap moisture and lead to mildew growth. Also, be mindful of potential abrasion between the cover and the Airstream’s aluminum skin, especially in windy conditions.
FAQ 6: What happens if I forget to winterize my Airstream?
If you forget to winterize your Airstream and the temperature drops below freezing, you risk serious damage to your plumbing system, including burst pipes, cracked fittings, and a damaged water heater. The cost of repairs can be significant.
FAQ 7: How do I de-winterize my Airstream in the spring?
Thoroughly flush the entire water system with fresh water to remove all traces of RV antifreeze. Sanitize the fresh water tank and water lines using a bleach solution. Replace the water filter. Reconnect the battery and test all appliances.
FAQ 8: Can I use a regular household dehumidifier inside the Airstream during winter storage?
Using a dehumidifier can help prevent moisture buildup inside the Airstream. However, you need to monitor the humidity levels and ensure the dehumidifier’s collection tank is emptied regularly. Consider using moisture-absorbing crystals as an alternative if you can’t regularly monitor the dehumidifier.
FAQ 9: Should I leave the Airstream windows open during winter storage?
It’s generally best to keep the windows closed to prevent moisture, pests, and debris from entering the Airstream. Proper ventilation can be achieved by opening vents slightly while keeping them screened.
FAQ 10: Is it necessary to lubricate door and window seals before winter storage?
Yes, lubricating the door and window seals with a silicone-based lubricant can help prevent them from drying out and cracking during the winter months. This will also make them easier to open and close in the spring.
FAQ 11: What about the tires? Should I do anything special for them?
Protect the tires from direct sunlight by covering them with tire covers. This will help prevent them from cracking and deteriorating. You can also consider placing the Airstream on leveling blocks to take some of the weight off the tires. Check tire pressure before storing.
FAQ 12: How do I protect the exterior of my Airstream during winter?
Wash and wax your Airstream before storing it. This will protect the aluminum skin from the elements and make it easier to clean in the spring. Consider using a UV protectant on the clear coat to prevent fading. Regular washing and waxing are key to maintaining the Airstream’s iconic shine.