As much as we love camping season, there’s one big to-do when the leaves start falling: winterizing the camper. It is not the most glamorous part of RV life, but it is essential for keeping your rig safe during those long, cold months. We created this step-by-step winterization video and added our own tips from experience. Whether you’re storing your camper in the driveway or at a seasonal lot, this guide will walk you through the full process of winterizing your travel trailer or RV.
Whether you’re a seasoned full-timer or a weekend warrior, knowing how to winterize your RV properly will save you thousands of dollars in potential damage and ensure your home-on-wheels is ready to hit the road come spring. In this comprehensive guide, I’ll walk you through everything you need to know to protect your investment during the cold months ahead.
Why Winterizing Your RV Is Essential
Before we dive into the step-by-step process, let’s talk about why winterization matters so much. Water expands when it freezes, and that expansion can crack pipes, damage your water heater, destroy your water pump, and even ruin appliances. Even if you live in a relatively mild climate, temperatures can drop unexpectedly overnight, and all it takes is one hard freeze to cause serious damage.
I’ve seen RVs with burst pipes that required complete plumbing system replacements costing upwards of $5,000. Compare that to spending an afternoon and about $30-50 on winterization supplies, and the choice becomes pretty clear. Plus, properly winterizing your RV means you’ll have peace of mind all winter long, knowing your rig is safe and protected.
Gather Your Winterization Supplies
Before you begin the winterization process, you’ll want to have all your supplies ready. Here’s what I always keep in my RV maintenance kit:
- RV antifreeze (non-toxic, propylene glycol-based) – typically 2-3 gallons
- Water heater bypass kit (if not already installed)
- Water pump converter kit or tubing to draw antifreeze
- Basic hand tools (wrenches, screwdrivers)
- Cleaning supplies for tanks and interior
- Tire covers and RV cover (optional but recommended)
A quick note about antifreeze: always use RV-specific antifreeze, never automotive antifreeze. RV antifreeze is non-toxic and safe for your plumbing system, while automotive antifreeze is poisonous and can contaminate your fresh water system.
Step-by-Step RV Winterization Process
1. Drain All Water Systems
The first step in learning how to winterize your RV is removing all water from your system. Start by draining your fresh water holding tank completely. Next, drain both your gray and black water tanks at an approved dump station, and give them a good flush while you’re at it.
Open all faucets (hot and cold), including your shower and outdoor shower if you have one. Don’t forget to flush the toilet several times to clear the lines. Locate your low-point drain valves (usually found underneath your RV) and open both the hot and cold water drains. Finally, drain your water heater by removing the drain plug and opening the pressure relief valve.
2. Bypass the Water Heater
This step is crucial and will save you several gallons of antifreeze. Most modern RVs have a water heater bypass valve already installed. If yours doesn’t, you can install a bypass kit relatively easily. Bypassing the water heater means antifreeze won’t fill your 6-10 gallon water heater tank, which would be wasteful and unnecessary.
Locate your water heater (typically on the exterior of your RV) and find the bypass valves. You’ll need to close the valves that allow water to flow into and out of the tank, and open the valve that allows water to bypass it entirely. Check your RV’s manual for specific instructions, as configurations vary by manufacturer.
3. Add Antifreeze to Your System
Now for the main event! There are two common methods to introduce antifreeze into your RV’s plumbing system. The first method involves using your RV’s water pump with a tube that draws antifreeze directly from the jug. The second method uses a hand pump to push antifreeze through the city water connection.
I prefer the water pump method. Attach a piece of clear tubing to your water pump’s intake side (you may need a pump converter kit), and place the other end into a gallon of RV antifreeze. Turn on your water pump and start opening faucets one at a time, starting with the closest to the pump. Run each faucet until you see bright pink antifreeze flowing steadily, then move to the next.
Don’t forget these often-missed spots: your outdoor shower, washing machine connections if applicable, ice maker lines, and toilet. Flush antifreeze through the toilet until you see it in the bowl. Pour a cup of antifreeze down each drain and toilet to protect the P-traps.
4. Protect Exterior Components and Systems
With your plumbing system protected, it’s time to address the exterior. Check all your exterior compartments for any items that could freeze or attract pests. Remove batteries if you’re storing your RV for extended periods, or connect them to a trickle charger to maintain their charge.
Clean and lubricate all slide-out mechanisms, door hinges, and locks. Apply a quality RV wax or protectant to prevent sun and weather damage. If possible, cover your RV with a breathable RV cover, or at minimum, cover your tires to protect them from UV damage.
5. Prepare the Interior
Inside your RV, give everything a thorough cleaning to prevent mold, mildew, and pest problems. Remove all food items, including canned goods (they can freeze and burst). Clean out the refrigerator and leave the doors propped open to prevent mold growth.
Place moisture absorbers throughout your RV to combat condensation. Open cabinet doors and drawers slightly to promote air circulation. Remove bedding, curtains, and any fabric items that could develop mildew, or at least wash them before storage.
Pro Tips for Successful RV Winterization
- Document everything: Take photos of valve positions and keep notes about your winterization process. Your future self will thank you when it’s time to de-winterize!
- Set reminders: Put a bright note on your steering wheel reminding you that the RV is winterized. I’ve heard horror stories of people trying to use their RV in winter without de-winterizing first.
- Check periodically: Visit your stored RV every few weeks to check for leaks, pest problems, or other issues. It’s easier to catch problems early.
- Know your climate: If you’re in a mild climate where temperatures rarely drop below freezing, you might get away with a less intensive winterization process, but it’s better to be safe than sorry.
- Consider propane: Decide whether to leave propane on (if you have an RV refrigerator that needs it) or turn it off completely. If leaving it on, ensure proper ventilation and check regularly.
Frequently Asked Questions
How long does it take to winterize an RV?
Once you know how to winterize your RV and have all your supplies ready, the process typically takes 2-3 hours for a thorough job. Your first time might take a bit longer as you familiarize yourself with your RV’s systems, but it gets faster with experience. I can now winterize my travel trailer in about 90 minutes.
Can I use my RV after winterizing it?
Technically yes, but it’s not recommended for extended use. The antifreeze in your system is safe but gives water an unpleasant taste. If you need to use your RV occasionally during winter, consider a partial winterization where you drain the system after each use, or use heat tape and insulation on vulnerable pipes instead of full winterization.
How much does it cost to have someone winterize my RV?
Professional RV winterization typically costs between $150-300 depending on your location and RV size. While this is certainly an option, learning to do it yourself saves money and gives you better knowledge of your RV’s systems. Plus, you can winterize on your own schedule rather than waiting for an appointment at the dealership.
Ready for Winter Peace of Mind
Learning how to winterize your RV is one of those essential skills that every RV owner should master. Yes, it takes a few hours and some elbow grease, but the investment of time is minimal compared to the potential damage you’re preventing. I promise that once you’ve done it once or twice, it becomes second nature.
Remember, proper winterization isn’t just about protecting your plumbing system—it’s about preserving your entire investment and ensuring that when spring rolls around, your RV is ready for new adventures. The peace of mind knowing your RV is properly protected all winter long is absolutely worth it.
Have you winterized your RV yet this year? If you found this guide helpful, share it with your fellow RVers, and drop a comment below with your own winterization tips and tricks! Let’s help each other keep our homes-on-wheels in top condition. And don’t forget to subscribe to S’more RV Fun for more practical RV maintenance guides, camping tips, and adventure inspiration. Happy (and safe) camping, friends!
