When the last backyard cookout of the year wraps up, don’t just shove your grill into storage without a second thought. Whether it’s gas, charcoal, or pellet-powered, your grill needs a thorough cleaning before it hibernates for the cold winter months. Neglecting this step is a big deal. Without care, the weather can cause rust, lead to pest problems, and unpleasant surprises when spring rolls around.

Why Cleaning Your Grill Before Winter Matters

Taking the time to clean your grill for winter storage isn’t just about appearances. It plays a significant role in preserving its function and longevity. Here’s why it’s worth the effort:

  • Rust Prevention: Grease buildup and food particles can trap moisture, accelerating rust on metal surfaces.
  • Pest Deterrence: Residual food debris and grease attract rodents, insects, and other unwanted guests.
  • Smooth Spring Start: A clean grill makes it easier to fire up when warmer weather returns, with no stubborn grease or grime in the way.
Grill is covered with snow on a patio.
Is it bad to let your grill stay covered with snow? Well, it's not the best. Credit: Pamwalker68 / Getty Images

How to Clean Your Grill

With the right cleaning techniques and a little elbow grease, you’ll minimize off-season wear and tear and keep your grill ready for action:

1. Start with a Cool Grill

Make sure your grill does a proper cool-down before cleaning. For gas grills, disconnect the propane tank or fuel source as a safety precaution.

2. Remove the Grill Grates and Clean Them Thoroughly

  • Use a grill brush, wire brushes, or a scraper to remove any stuck-on food residue.
  • Wash the grates in warm, soapy water, scrubbing the grates clean with a non-abrasive pad.
  • Rinse and dry the clean grates completely to prevent rust.

3. Clean the Interior

  • For gas grills, remove the flavorizer bars or heat deflectors (the metal plates over the burner tubes) and scrape off built-up grease and debris.
  • For charcoal grills, clean out the ash catcher and wipe the interior with a damp cloth.
  • Pellet grills may require clearing out ash from the burn pot and auger system.

4. Degrease the Exterior

Wipe down the exterior of your grill body with soapy water. For stainless steel grills, use a specialty stainless steel cleaner and soft cloth to restore shine and prevent corrosion.

5. Inspect and Maintain Components

  • Check burner ports, valves, and hoses on gas grills for wear or blockages.
  • On charcoal grills, inspect vents for rust or leftover debris that might impede airflow.
  • Pellet grills should have their electronic components gently cleaned and checked for damage.

6. Season the Grates

Lightly coat cooking grates with cooking oil to create a protective layer against rust during storage.

7. Dispose of Grease and Debris

Empty grease trays and properly dispose of grease to prevent buildup and attract pests. And, do this before attempting to move the grill into your garage or shed. If it's full, it can splash, which makes a big mess.

Grilling and seasoning meats during a summer BBQ
Always, always, always check your grease tray before attempting to relocate your grill for the winter. Credit: fotojuwelier / Getty Images

Tips for Easier Cleaning

For a more streamlined cleaning process, keep these tips in mind:

  • Use Aluminum Foil: Crumple aluminum foil into a ball and use the ball of foil as a makeshift metal scraper for grates.
  • Soak Grates Overnight: If leftover residue is particularly stubborn, soak grates overnight in warm clean water with dish soap or baking soda.
  • Vacuum Ash: A shop vac can quickly and easily remove fine ash from charcoal or pellet grills.
  • Clean While It’s Warm: For lighter cleaning jobs, tackle the grill grates while the grill is still warm (not hot) after use.

Grill buried by snow.
How Cold is Too Cold For a Propane Tank?
When temperatures nosedive, it can affect your propane appliances. Is it worth pushing through, or should that grill be stored away for the season?
Read More

FAQ

Can I use oven cleaner on my grill?

Oven cleaner can be too harsh for most grills, especially those with non-stick or enamel-coated grates. It’s better to use a grill-specific cleaner or a mix of baking soda and vinegar for tough spots.

How do I clean the carbon deposits inside of the grill lid?

Over time, the inside of your entire grill lid can develop a layer of blackened grease, known as carbonized grease. Scrape it gently with a grill brush or plastic scraper, then wipe with a damp cloth and mild detergent. Avoid metal tools that could scratch the surface.

Do I need to oil my grill before storing it?

Yes, a coating of oil on your grill’s cooking grates is an important step to prevent rust during winter. Use a high-smoke-point oil, like vegetable or canola, and apply a light coating after cleaning and drying the grates.