Successfully winterizing your travel trailer plumbing is absolutely critical to prevent costly damage from freezing temperatures. By completely removing water from your pipes, tanks, and fixtures, and replacing it with RV antifreeze, you can protect your investment and ensure your trailer is ready for adventures next spring.
Why Winterizing Your Travel Trailer Plumbing is Essential
Winterizing your travel trailer plumbing isn’t just a good idea; it’s a necessity in regions where temperatures dip below freezing. Water expands when it freezes, and this expansion can exert immense pressure on your plumbing system. This pressure can lead to:
- Cracked pipes: Easily the most common and potentially damaging issue. Replacing damaged pipes can be expensive and labor-intensive.
- Burst fittings: Connectors between pipes are vulnerable and can crack or break apart.
- Damaged water pump: The water pump is susceptible to freezing and cracking, rendering it unusable.
- Cracked toilet: The toilet bowl and flush valve are easily damaged by freezing water.
- Damaged faucets and showerheads: Internal mechanisms in faucets and showerheads can be fractured by ice.
- Damaged water heater: The water heater can be catastrophically damaged if water freezes inside the tank.
Ignoring winterization can result in hundreds, even thousands, of dollars in repairs, not to mention the inconvenience and frustration of dealing with a damaged RV. Taking the time to properly winterize your plumbing is a worthwhile investment in the longevity of your travel trailer.
Two Primary Methods: Air Blow-Out vs. Antifreeze
There are two main approaches to winterizing your travel trailer plumbing: the air blow-out method and the antifreeze method. While both methods aim to remove water, they differ in their execution and effectiveness.
The Air Blow-Out Method
This method relies on using compressed air to force water out of the plumbing system. It’s a less expensive option initially, as it doesn’t require purchasing RV antifreeze.
Pros:
- Lower initial cost.
- No antifreeze odor to contend with.
Cons:
- Requires an air compressor.
- May not remove all water, increasing the risk of freezing.
- Potentially higher risk of damaging pipes with excessive air pressure.
The Antifreeze Method
This method involves flushing the plumbing system with RV antifreeze, a non-toxic solution specifically designed to prevent freezing in RVs.
Pros:
- Provides superior protection against freezing.
- Ensures complete protection, even in severe temperatures.
- Easier to confirm that the system is properly winterized (antifreeze will be visible).
Cons:
- Requires purchasing RV antifreeze.
- May leave a slight odor in the water lines, which typically dissipates after flushing in the spring.
Recommendation: While the air blow-out method can work in some cases, the antifreeze method is generally considered the more reliable and safer option for ensuring complete protection against freezing. For this article, we will focus on the antifreeze method.
Step-by-Step Guide to Winterizing with Antifreeze
Here’s a detailed guide to winterizing your travel trailer plumbing using the antifreeze method:
- Gather your supplies: You’ll need RV antifreeze (the amount depends on the size of your trailer, typically 2-3 gallons), a water heater bypass kit (if your trailer doesn’t already have one), a water pump converter kit (if your pump isn’t already set up to draw antifreeze), a wrench, a screwdriver, and potentially a siphon hose.
- Drain your tanks: Completely drain both your fresh water tank and your black and gray water holding tanks. Flush the black tank thoroughly.
- Bypass the water heater: This is crucial. Locate your water heater and activate the bypass valve(s). This prevents filling the water heater tank with antifreeze, saving you a significant amount. If your trailer doesn’t have a bypass kit, install one.
- Drain the water heater: Once bypassed, drain the water heater completely. Remove the drain plug and allow all the water to escape. Replace the drain plug after draining.
- Open all faucets and low point drains: Open all faucets (hot and cold) and low point drains. Low point drains are typically located near the bottom of the trailer and allow water to drain from the lowest points in the plumbing system. Allow all water to drain completely.
- Install the water pump converter kit (if necessary): If your water pump isn’t already set up to draw antifreeze, install a converter kit. This usually involves disconnecting the fresh water tank supply line and connecting a hose that can be inserted into a jug of antifreeze.
- Pump antifreeze through the system: Turn on the water pump. Starting with the faucet furthest from the pump, run the cold water until you see a steady stream of pink antifreeze. Repeat this process for all cold water faucets, then switch to the hot water faucets and repeat. Don’t forget the shower and outside shower (if applicable). Flush the toilet until you see antifreeze.
- Pour antifreeze into drain traps: Pour a cup of antifreeze into each drain (sink and shower) to protect the P-traps from freezing.
- Winterize the washing machine and dishwasher (if applicable): If your travel trailer has a washing machine or dishwasher, consult the owner’s manual for specific winterizing instructions. Generally, this involves running antifreeze through the appliance’s water lines.
- Turn off the water pump and disconnect the battery: Once you’ve winterized all the plumbing fixtures, turn off the water pump and disconnect the RV battery to prevent accidental operation and battery drain.
Frequently Asked Questions (FAQs)
1. What type of antifreeze should I use?
Always use RV antifreeze specifically designed for potable water systems. Never use automotive antifreeze, as it is toxic and can contaminate your water lines. Look for antifreeze labeled as non-toxic and safe for drinking water systems.
2. How much RV antifreeze do I need?
The amount of antifreeze you’ll need depends on the size of your travel trailer and the length of your plumbing runs. A general rule of thumb is 2-3 gallons for a smaller trailer and 3-4 gallons for a larger trailer. It’s always better to have a little extra than to run out.
3. Can I skip the water heater bypass?
Absolutely not! Bypassing the water heater is crucial. Filling the entire water heater tank with antifreeze is unnecessary and wastes a significant amount of antifreeze. It also takes much longer to flush out the antifreeze in the spring.
4. Do I need to drain my water heater completely?
Yes, drain the water heater completely. Even if you’re bypassing the water heater, residual water can freeze and damage the tank.
5. What are low point drains, and where are they located?
Low point drains are valves that allow water to drain from the lowest points in your plumbing system. They are typically located underneath the trailer, near the water lines. Consult your owner’s manual for the exact location.
6. Can I use an air compressor instead of antifreeze?
While the air blow-out method is an option, it’s not as reliable as using antifreeze. If you choose to use an air compressor, be very careful not to exceed 30 PSI, as higher pressures can damage your plumbing. Ensure all faucets and drains are open while blowing out the lines.
7. What if my travel trailer doesn’t have a water pump converter kit?
You can purchase a water pump converter kit at most RV supply stores. They are relatively inexpensive and easy to install. Alternatively, you can disconnect the inlet hose to the water pump and insert it directly into the antifreeze jug.
8. How do I know when I’ve pumped enough antifreeze through the system?
You’ll know you’ve pumped enough antifreeze through the system when you see a steady stream of pink antifreeze coming out of each faucet, showerhead, and toilet. This confirms that the water has been displaced with antifreeze.
9. What do I do with the antifreeze in the spring?
In the spring, flush your entire plumbing system with fresh water to remove the antifreeze. Run water through each faucet, showerhead, and toilet until the water runs clear and there is no longer any pink tint.
10. Is it safe to drink water that has been through the winterized plumbing?
Yes, after thoroughly flushing the system with fresh water, the water is safe to drink. RV antifreeze is non-toxic and designed for potable water systems.
11. Do I need to remove the water filter?
Yes, remove the water filter and bypass it if possible. If you can’t bypass it, pour some antifreeze into the filter housing before replacing the cap. This will protect the filter housing from freezing.
12. What if I have a tankless water heater?
Tankless water heaters require special winterizing procedures. Consult your owner’s manual for specific instructions. Generally, this involves disconnecting the water lines and using compressed air to blow out any remaining water. You may also need to introduce antifreeze into the system.
By following these steps and addressing these FAQs, you can confidently winterize your travel trailer plumbing and protect it from the damaging effects of freezing temperatures. Enjoy the peace of mind knowing your RV is safe and ready for your next adventure.