![\"A](\"https:\/\/www.millsupply.com\/blog\/wp-content\/uploads\/2026\/04\/MillSupply-422801-Maintaining-RV-Waste-Tank-Image-A1.jpg\")
<\/figure>\n\n\n\nWinterize the Plumbing System<\/h2>\n\n\n\n
Plumbing damage is one of the most common winter storage issues, largely because water expands when it freezes. Fortunately, winterizing is manageable when you take it step by step.<\/p>\n\n\n\n
Drain Fresh Water and Holding Tanks Completely<\/h3>\n\n\n\n
Begin by turning off the water supply and shutting down the water heater before you do anything else. Drain the fresh water tank, then open low-point drains if your RV has them. After that, empty and flush the gray and black tanks at an approved dump station, and rinse until the water runs clear. Finally, open faucets to relieve pressure so leftover water can escape from the lines.<\/p>\n\n\n\n
Drain and Bypass the Water Heater<\/h3>\n\n\n\n
Water heaters can hold several gallons, so skipping this step leaves a lot of water behind. Allow the heater to cool completely, then remove the drain plug or anode rod to let it empty. To make draining easier, briefly open the pressure relief valve to let air in and speed up the flow. Next, set the bypass valves so antifreeze does not fill the water heater tank during winterizing.<\/p>\n\n\n\n
Protect Appliances and Propane Components<\/h2>\n\n\n\n
Appliances perform best when they are clean, dry, and properly powered down. With your plumbing handled, these steps help prevent odors, clogs, and avoidable service calls.<\/p>\n\n\n\n
Prep the Refrigerator<\/h3>\n\n\n\n
First, clean the refrigerator and freezer, then dry them completely so moisture does not linger. Leave the doors propped open to encourage airflow and reduce the chance of mildew. Remove items such as ice trays or bins that could trap water or harbor odors. If your fridge has a built-in storage latch, use it, since it keeps the door open without stressing hinges.<\/p>\n\n\n\n
Clear Vents and Check Exterior Covers<\/h3>\n\n\n\n
Look at furnace vents, water heater vents, and any other exterior vent covers for leaves, dirt, or nests. Even small blockages can lead to moisture buildup and invite pests seeking shelter. Clear debris gently and make sure covers are secure. If you notice any odd furnace behavior during the season, address it before winter so your RV is perfectly ready in spring.<\/p>\n\n\n\n
Shut Off Propane and Follow Storage Rules<\/h3>\n\n\n\n
Turn off the propane tank and confirm that the appliance valves are closed as recommended by your owner\u2019s manual. If you store at a facility, check their propane requirements since indoor sites may have additional rules for tanks and access. Inspect the hoses and regulator area for visible wear, and ensure the regulator vent is not blocked by dirt or debris.<\/p>\n\n\n\n Cold temperatures and long idle periods are hard on batteries, and tires can develop flat spots when they sit under load. For that reason, a bit of preparation here makes the spring start-up smoother and helps prevent replacement costs.<\/p>\n\n\n\n Charge both the house batteries and the chassis battery before you put the RV away, since a fully charged battery handles cold better than a partially charged one. If you can remove the batteries and store them in a cool, dry place, it often prevents deep discharge during long-term storage. If batteries stay installed, disconnect the negative terminal or use the battery disconnect switch to reduce parasitic draw from electronics.<\/p>\n\n\n\n Inflate tires to the recommended storage pressure and check for cracks, bulges, or uneven wear before you park for the season. Tire covers help block sun exposure, which can age rubber faster than many owners expect. If the RV will sit for months, a stable parking surface and proper chocking help reduce unwanted movement during freeze-thaw cycles.<\/p>\n\n\n\n Unplug appliances, turn off unneeded breakers, and power down electronics so they do not draw power over time. If you keep the RV on shore power, use surge protection, and make sure your converter or charger is functioning correctly. If the RV is stored without power, minimizing draw is the priority, since even small drains can flatten a battery over the season.<\/p>\n\n\n\n When you handle the details now, spring feels a lot less stressful. Taking the time to understand how to prepare your RV for winter storage helps protect the systems and prevent odors, mold, and damage. As a result, you\u2019re far less likely to deal with cracked lines, stale smells, or batteries that will not hold a charge. Put in the effort once, and you get to enjoy your first trip back without an avoidable repair list!<\/p>\n\n\n\n![\"The](\"https:\/\/www.millsupply.com\/blog\/wp-content\/uploads\/2026\/04\/MillSupply-422801-Man-Checking-RV-Storage-Image-B1.jpg\")
<\/figure>\n\n\n\nManage Batteries, Tires, and Electrical Systems<\/h2>\n\n\n\n
Keep Batteries Charged<\/h3>\n\n\n\n
Protect Tires<\/h3>\n\n\n\n
Reduce Electrical Risks<\/h3>\n\n\n\n
Winter Storage That Pays Off in Spring<\/h2>\n\n\n\n