RV Winter Storage Checklist: What Actually Matters

The first winter I parked the rig for a few months, I skipped two things on the list because they seemed like overkill. Both of them cost me money in the spring. That's the short version of why this RV winter storage checklist exists — not the internet-generic version, the one built from what actually goes wrong when you get lazy in October.

Chewy hates the sound of the water pump draining. Every year, same reaction. He knows what it means: we're not moving for a while.

Why an RV Winter Storage Checklist Actually Matters

An RV sitting still for months isn't neutral — it's exposed. Water left in lines freezes and cracks fittings you won't find until you're relying on them again. Batteries drain and die if nobody's watching. Mice don't care that the door was locked.

None of this is dramatic. It's just maintenance that's easy to skip because nothing looks wrong yet.

The Steps That Actually Prevent Damage

Plumbing First, Always

Draining the water heater and lines isn't optional in freezing climates — it's the single most common source of spring repair bills. Run RV antifreeze through the lines after draining, not just water. Water left behind in low points of the line will freeze regardless of how thorough the drain looked.

Battery Disconnect or Maintainer

Pick one: disconnect the battery entirely, or put it on a maintainer. Leaving it connected with nothing monitoring it is how you come back to a dead battery that won't hold a charge anymore. A $30 maintainer costs less than a replacement battery.

Tire Pressure and Cover

Underinflated tires sitting for months develop flat spots. Bring tires up to the manufacturer's recommended pressure before storage, and use tire covers if the rig's sitting in direct sun — UV breaks down rubber faster than the cold does.

Pest Prevention

Steel wool in every gap you can find — exhaust vents, around plumbing pass-throughs, anywhere a mouse-sized gap exists. Mice don't need much. A chewed wire harness is a far more expensive problem than an hour spent stuffing gaps before you leave it.

Propane and Appliances

Turn off the propane at the tank, not just the appliances. Leave refrigerator and freezer doors propped open so they don't grow mold while sitting closed for months — this one gets skipped constantly and it's a genuinely unpleasant thing to come back to.

Roof and Seal Check

Before storage is the right time to actually get on the roof and check seals around vents, the AC unit, and seams — not after a leak shows up on the ceiling. A five-minute check now beats a wet interior later.

The Steps People Skip (and Regret)

• Moving the rig periodically if possible. Tires and suspension sitting in one position for months develop issues that just driving occasionally would prevent.
• Covering or blocking exterior vents. Open vents are an invitation for pests and moisture, not just airflow.
• Removing perishables and anything that attracts pests, not just food — toothpaste, some soaps, anything with a scent.
• Checking on it. Even from a distance. A storage unit you never visit is a storage unit where small problems become big ones before anyone notices.

FAQ

How long can an RV sit in storage without being started?

Most manufacturers recommend not letting it sit more than 30 days without starting the engine and running systems briefly, if the storage situation allows it. A battery maintainer covers the electrical side even if the engine itself can't be started regularly.

Do I need to winterize if I'm storing indoors in a heated space?

If the storage space stays reliably above freezing, plumbing winterization is less urgent — but battery, pest, and tire steps still matter regardless of indoor or outdoor storage.

What temperature should I winterize my RV at?

Winterize before overnight temperatures are expected to drop below freezing, not after the first hard freeze already happened. Waiting until it's already cold risks damage that's already occurred by the time you get to it.

Can I use regular antifreeze in my RV plumbing?

No — use RV-specific antifreeze, which is non-toxic and safe for potable water systems. Automotive antifreeze is toxic and not made for this use.