Must-Have Items
1. Nontoxic RV/marine antifreeze. The amount depends on the layout and length of your plumbing lines; 2-3 gallons normally do.
2. A water heater bypass kit, if not already installed.
3. A wand to clean out the holding tanks.
4. A water pump converter kit, or tubing to connect to the inlet side of the water pump.
5. Basic handtools to remove drain plugs.

Some Winter Tips
Be sure to read your owner's manuals for unit-specific winterizing guidelines. Follow the steps below that apply to your RV.

• If you have any inline water filters, remove and bypass before starting.
• Drain the fresh water holding tank.
• Drain and flush the gray and black water tanks. If the RV doesn't have a built-in flushing system, clean out the black tank with a wand.
• Drain the water heater, but never when the water heater is hot or under pressure. With no water hooked up to the RV and the water pump off, open a hot water faucet to remove any pressure on the system. Open the pressure-relief valve and remove the drain plug. Allow the tank to cool before draining.
• Open all hot and cold faucets. Don't forget the toilet valve and outside shower.
• Locate and open the low point water drain lines. Using the water pump will help force water out, but turn it off as soon as the system is drained.
• Recap all drains and close all faucets.
• Bypass the water heater. If you do not have a bypass kit installed, the water heater will fill up with antifreeze before it goes through the water lines, wasting 6-10 gallons of antifreeze.
• Install a water pump converter kit, or disconnect the inlet side of the water pump (the line coming from the freshwater holding tank) and connect tubing from the pump into a 1-gallon jug of RV antifreeze.
• Turn the water pump on and pressurize the system. Starting with the closest faucet to the pump, slowly open the hot and then cold valves until antifreeze appears. Replace the antifreeze container as required. Repeat on all faucets from the closest to the farthest away. Don't forget the outside shower.
• Flush the toilet until antifreeze appears.
• Pour a cupful of antifreeze down each drain. Pour several cups in the toilet and flush into the holding tank.
• If your water heater has an electric heating element, turn it off. This will protect the element if the unit is plugged in while in storage.
• Make sure all faucets are closed.
• Consult your owner's manuals for winterizing icemakers and washing machines.