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LG Air Conditoner - Troubleshooting White Smoke/Fog Coming From

In case that the temperature difference between the indoor air and the wind from the air conditioner is big, or the humidity level is high, or when you cook foods indoors, [Indoor Air Temperature Up], there is a huge difference between the hot indoor air and the cold wind from the air conditioner, dews can be formed near the water supply outlet of the….

LG Air Conditoner - Troubleshooting White Smoke/Fog Coming From Unit LG USA help image
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TroubleshootingAir Conditioners

What to Check First

  1. In case that the temperature difference between the indoor air and the wind from the air conditioner is big, or the humidity level is high, or when you cook foods indoors, [Indoor Air Temperature Up], there is a huge difference between the hot indoor air and the cold wind from the air conditioner, dews can be formed near the water supply outlet of the product or white steam can come out of it. Dew forming caused by temperature difference does not mean that the product malfunctions.
  2. This guide was created for all models, so the images or content may be different from your product.

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 Conditoner - Troubleshooting White Smoke/Fog Coming From Unit?

In case that the temperature difference between the indoor air and the wind from the air conditioner is big, or the humidity level is high, or when you cook foods indoors, [Indoor Air Temperature Up], there is a huge difference between the hot indoor air and the cold wind from the air conditioner, dews can be formed near the water supply outlet of the product or white steam can come out of it. Dew forming caused by temperature difference does not mean that the product malfunctions.

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

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

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Read the Official LG Guide