Winterizing your RV trailer is essential for preventing costly damage from freezing temperatures. Proper winterization involves removing all water from the plumbing system, adding antifreeze where necessary, and protecting exterior components from the elements, ensuring your RV is ready for its next adventure.
Why Winterization Matters: The Cost of Neglect
The most significant reason to winterize your RV trailer is to prevent freeze damage to the plumbing system. Water expands when it freezes, and even a small amount of frozen water can crack pipes, split fittings, and damage appliances like water heaters and toilets. Repairs can be extensive and expensive, potentially costing thousands of dollars. Beyond plumbing, winterization helps protect against rodent infestations, moisture buildup that can lead to mold, and general deterioration from prolonged exposure to harsh weather. Ignoring winterization is a gamble you simply can’t afford to take.
Step-by-Step Winterization Procedures
Winterizing your RV trailer is a multi-stage process that requires careful attention to detail. Before beginning, gather your supplies: RV antifreeze (non-toxic propylene glycol), a water heater bypass kit (if not already installed), a water pump converter kit (or tubing to connect to the pump), and basic tools like screwdrivers and wrenches.
1. Draining the Water System
This is the crucial first step. You need to eliminate as much water as possible from all parts of the system.
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Drain the Fresh Water Tank: Locate and open the drain valve on your fresh water tank. Allow all the water to drain completely.
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Drain the Water Heater: Turn off the water heater (both gas and electric). Allow it to cool completely. Then, remove the drain plug and let all the water drain. Important: Replace the drain plug with a new one that includes Teflon tape on the threads to prevent leaks. Consider installing a water heater bypass kit if you don’t already have one. This will prevent antifreeze from filling the large water heater tank, saving you money.
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Drain the Water Lines: Open all faucets, both hot and cold, including the shower and any outside shower. Flush the toilet. Turn on the water pump briefly to help push out any remaining water. You can also use compressed air (at a low pressure of around 30-40 PSI) to blow out the lines, ensuring all water is removed.
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Drain and Flush Holding Tanks (Black and Grey): Empty your black and grey water holding tanks at a designated dump station. Thoroughly flush both tanks using the built-in tank flushing system or a tank rinsing wand. Close the drain valves after flushing.
2. Adding RV Antifreeze
Now, it’s time to protect the plumbing system with RV antifreeze. Never use automotive antifreeze as it is toxic and can contaminate your water system.
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Bypass the Water Heater: If you have a bypass kit, turn the valves to direct the antifreeze around the water heater. This step is critical to avoid filling the large tank.
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Introduce Antifreeze into the Water Lines: Use a water pump converter kit or tubing to connect a gallon jug of RV antifreeze to the inlet side of your water pump. Turn on the pump.
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Run Antifreeze Through Each Fixture: Open each faucet, one at a time, starting with the one closest to the pump. Run the faucet until you see a steady stream of pink (antifreeze). Repeat for all faucets, including the shower and outside shower. Flush the toilet until you see pink antifreeze.
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Pour Antifreeze into P-Traps and Drains: Pour antifreeze into all sink and shower drains to prevent freezing in the P-traps. Add some antifreeze to the toilet bowl.
3. Protecting Exterior Components
Don’t forget to protect the exterior of your RV from the elements.
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Seal Openings: Inspect all openings and seams around windows, doors, vents, and utility access points. Use RV-specific sealant or caulk to seal any gaps or cracks that could allow water or rodents to enter.
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Cover Tires: Prolonged exposure to sunlight can damage tires. Use tire covers to protect them from UV rays and cracking.
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Protect the Roof: Clean the roof thoroughly. Consider applying a roof sealant or protectant to prevent leaks and extend the life of the roof.
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Cover the RV (Optional): An RV cover can provide an extra layer of protection from snow, ice, and sun. Choose a breathable cover that is specifically designed for RVs to prevent moisture buildup and mold growth.
FAQs: Common Winterization Questions Answered
Here are some frequently asked questions about winterizing RV trailers:
FAQ 1: Can I just leave the faucets dripping instead of using antifreeze?
- No! While dripping faucets can help prevent pipes from freezing in a house, this method is not reliable for RVs. RVs have exposed plumbing and are more susceptible to freezing temperatures. Furthermore, dripping faucets waste water and could lead to frozen and overflowing holding tanks.
FAQ 2: How much RV antifreeze do I need?
- Typically, 2-3 gallons of RV antifreeze is sufficient for a standard RV trailer. However, larger RVs may require more. It’s always better to have a little extra on hand.
FAQ 3: What if I accidentally get automotive antifreeze in my fresh water tank?
- Do not use the RV! This is a serious situation. Automotive antifreeze is toxic. You need to have the tank professionally cleaned and the entire system thoroughly flushed and tested before using the RV again.
FAQ 4: How do I winterize the ice maker and washing machine (if applicable)?
- Ice Maker: Disconnect the water line to the ice maker. Drain the water line completely. Refer to your ice maker’s manual for specific winterization instructions.
- Washing Machine: Refer to your washing machine’s manual for specific winterization instructions. Generally, you’ll need to run an empty cycle with RV antifreeze added to the detergent dispenser.
FAQ 5: Do I need to remove the battery?
- It’s a good idea to disconnect the battery and store it in a cool, dry place. This will prevent it from discharging over the winter. Consider using a battery maintainer to keep it charged.
FAQ 6: What about the LP gas system?
- Make sure your LP gas tanks are full. This will prevent moisture from accumulating inside the tanks. Inspect the LP gas regulator and hoses for any signs of damage.
FAQ 7: Can I skip winterizing if I live in a mild climate?
- Even in mild climates, occasional freezing temperatures can occur. It’s best to err on the side of caution and winterize your RV, especially if it will be stored for an extended period.
FAQ 8: How do I de-winterize my RV in the spring?
- Drain the antifreeze from the system. Flush the fresh water tank and lines thoroughly with fresh water. Sanitize the water system by adding a solution of bleach and water (1/4 cup of bleach per 15 gallons of water) to the fresh water tank. Run the solution through all the faucets and fixtures. Let it sit for several hours, then drain and flush the system again with fresh water until the bleach smell is gone.
FAQ 9: Where can I safely dispose of RV antifreeze?
- RV antifreeze (propylene glycol) is generally considered non-toxic and can be safely disposed of down the drain. However, always check local regulations for specific disposal guidelines in your area.
FAQ 10: How often should I inspect my RV during the winter?
- Ideally, inspect your RV every few weeks to check for any signs of leaks, rodent activity, or other damage.
FAQ 11: Should I leave the refrigerator door open during winter storage?
- Yes. Leaving the refrigerator door slightly ajar will help prevent mold and mildew growth. Clean the refrigerator thoroughly before storing.
FAQ 12: Is it better to store my RV covered or uncovered?
- A breathable RV cover is generally recommended to protect against the elements. However, if you choose to store your RV uncovered, make sure to clean and protect the exterior surfaces regularly.
A Small Price for Peace of Mind
Winterizing your RV trailer might seem like a chore, but the time and effort invested are a small price to pay for protecting your investment. By following these steps and addressing common concerns, you can ensure that your RV is ready for its next adventure when spring arrives. Taking proactive steps will save you money, time, and hassle in the long run. Enjoy the peace of mind knowing you’ve properly prepared your RV for the winter season!