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LG Air Conditioner – How to Winterize Your A/C — LG Help Guide

When the color of leaves start to change and the weather becomes colder, it's time to winterize your LG window air conditioner to protect it from the harsh winter elements such as snow and ice and from rodents nesting in the unit.

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TroubleshootingAir Conditioners

What to Check First

  1. Window Through the Wall.
  2. Supplies Needed Work Gloves (Optional) Towels Garden Hose AC Unit Cover & Tie Down Shut Off Power To the Unit. This will prevent the unit from turning on if there is a warm day during the fall or winter.
  3. Remove Debris. Remove all debris such as leaves, twigs, bugs and dust from the unit. Wipe down the unit with a clean rag and tap water or mild detergent.
  4. Clean the Evaporator Coils. Clean the evaporator coils (inside the front grille) and condenser coils (outside of the unit) and allow your unit to dry completely.
  5. Clean the Air Filter. Check the air filter and wash with lukewarm water.
  6. Cover the Air Conditioner. Cover the air conditioner with a waterproof cover. Use vinyl tie-downs to secure the cover in place.
  7. Check the Unit. Throughout the winter season, periodically check your unit and remove any snow, ice and/or debris from the top of the unit.
  8. When the color of leaves start to change and the weather becomes colder, it's time to winterize your LG window air conditioner to protect it from the harsh winter elements such as snow and ice and from rodents nesting in the unit.
  9. Prior to winterizing you're A/C unit make sure the unit is powered off and unplugged from the power source.
  10. Select the type of air conditioner below:.

Why This Can Happen

Symptoms can have more than one cause, and the correct steps depend on the exact model, installation and operating conditions. Use the checks above to narrow the issue before service.

Safety and Model-Specific Guidance

Stop troubleshooting if you notice burning, electrical damage, unsafe heat, gas odor, refrigerant concerns, or water near electrical components. Follow the official LG USA instructions for your exact model.

Frequently Asked Questions

What should I check first for LG Air Conditioner – How to Winterize Your A/C?

Window Through the Wall.

When should I stop troubleshooting and contact LG?

Stop if the product shows signs of electrical damage, burning, leaking near electrical components, or if the recommended checks do not resolve the issue. Use LG USA support for model-specific service guidance.

Does this guidance apply to every LG model?

Not always. Controls, error codes and service steps can differ by model. Confirm the exact model number and follow the linked LG USA article for model-specific instructions.

Related LG Products

These model pages are linked because the stored category or exact model matches this Help Library topic.

Buying Guides for This Product Type

Efficiency & running costAir Conditioner Efficiency, Energy & Running-Cost GuideHousehold use caseAir Conditioner Family & High-Use Household GuideFeatures & valueAir Conditioner Features Worth Paying For — Value GuideFit & installationAir Conditioner Fit, Installation & Delivery Planning

Related Help Articles

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Read the Official LG Guide