LG Dryer: mildew smell

Professional Repair Guide

What is this symptom?

Experiencing a mildew smell from your LG dryer? This unpleasant odor typically indicates moisture retention and potential microbial growth inside the drum or seals. It can also stem from lint buildup, inadequate drying, or clogged venting. Addressing these issues promptly is essential to restore freshness to your laundry.

Urgency: Medium

Important Tips for LG Models

  • LG’s official troubleshooting focuses on general bad odors including burning or musty smells; cleaning the door seal and drum is recommended.

Possible Causes

Moisture retention and mold/bacterial growth inside the drum or seals

How to Identify: Musty/mildew smell especially when opening the door; visible residue or discoloration on the door seal

Part: Drum interior and door gasket/seal

Lint and residue buildup in lint trap and vents causing trapped moisture

How to Identify: Reduced airflow, longer drying times, lint buildup visible in trap/vent; musty smell correlated with full lint areas

Part: Lint trap and venting system

Inadequate drying/overloading leading to damp clothes

How to Identify: Smell more pronounced when dryer is overloaded or settings aren’t sufficient for load size

Part: User operation conditions

Residual detergent/softener or soil build‑up in drum

How to Identify: Sticky or filmy residue visible, smell correlates with certain detergent usage

Part: Drum surface

Clogged or poorly installed venting causing moisture backflow

How to Identify: Moisture or lint escaping near vent, poor airflow, mildew smell persists after cleaning internal parts

Part: External vent duct

DIY Solutions

Clean drum interior and door seal

Easy 15-30 minutes
Tools Needed: microfiber cloth, mild detergent, white vinegar
  1. Unplug dryer.
  2. Mix equal parts water and white vinegar.
  3. Wipe inside drum and door gasket thoroughly to remove residue.
  4. Leave door open to air dry completely.
⚠️ Safety First: Ensure dryer is unplugged before cleaning interior surfaces

Clean lint trap and vent system

Moderate 30-60 minutes
Tools Needed: vacuum with hose attachment, dryer vent brush or flexible brush
  1. Remove lint trap and clean lint manually.
  2. Use a vacuum and lint brush to clean the lint trap housing.
  3. Access external vent and clean lint build‑up from ducting.
  4. Run a short drying cycle to check airflow.
⚠️ Safety First: Avoid sharp objects inside vents

Avoid overloading and ensure proper drying cycles

Easy N/A
  1. Load dryer to no more than recommended capacity.
  2. Select appropriate heat and time setting for load type.
  3. Ensure clothes are spun well in washer before drying.

Next step

Choose the next step for mildew smell

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Check during diagnosis

Most relevant component to inspect

Door Gasket

Creates a watertight seal around the door to prevent leaks during operation.

Typical part-only price
$45 - $110
DIY difficulty
Medium
Estimated time
30-60 mins
Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Dryer Lint Filter

Captures lint from exhaust air before it reaches the dryer vent path.

$15 - $55 · Easy · 5 mins

Check fit & price
Model number required

Model-compatible Dryer parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

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Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Dryer Vent Cleaning Kit

Helps remove routine lint buildup from an accessible dryer vent path. It does not diagnose or repair an E-code or failed component.

View maintenance supply
Maintenance supply

Lint Trap Cleaning Brush

A narrow brush for routine cleaning around an accessible lint screen and housing.

View maintenance supply
Maintenance supply

Dryer Vent Hose Kit

A replacement exhaust duct option for visibly crushed or damaged external venting. Check diameter, length, local code, and installation clearance.

View maintenance supply

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Professional Repairs

Deep internal cleaning and service

Estimated Cost: $100 - $300

Vent system professional cleaning or re‑installation

Estimated Cost: $120 - $350

When to Call a Professional

Smell persists after thorough cleaning of drum, lint traps, and vents
Signs of mold inside inaccessible internal components (e.g., blower housing)
Noticeable reduction in airflow or suspected vent damage

Preventive Maintenance

  • Clean lint trap after every use: Lint buildup that traps moisture leading to odors
    Frequency: every use
  • Leave door ajar after use to dry interior: Moisture accumulation and mildew growth
    Frequency: after each drying cycle
  • Inspect and clean dryer vents regularly: Vent clogs that cause moisture retention and odors
    Frequency: every 3–6 months

Frequently Asked Questions

Why is my LG Dryer mildew smell?
Common causes include moisture retention, lint buildup, inadequate drying, and clogged vents.
How do I fix LG Dryer mildew smell myself?
Clean the drum and door seal with vinegar, clear lint traps, and avoid overloading the dryer.
How much does it cost to fix mildew smell?
Professional repairs range from $100 to $350, depending on the service needed.
When should I call a technician for mildew smell?
Call a technician if DIY solutions fail or if the issue persists after cleaning.

References & Sources

Community Analytical Insights

Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions

Common Issues Reported by Users

  • Moisture buildup in the dryer drum due to insufficient drying time or overloading
  • Blocked or damaged venting system preventing proper airflow
  • Dirty lint filter or lint trap causing airflow restriction

User Suggested Solutions

  1. Clean the lint filter and ensure it is free of debris. Check the venting system for blockages and clean if necessary. Run the dryer on a high heat setting for a full cycle to eliminate moisture.

  2. Reduce load size to allow for better airflow and drying efficiency. Avoid overloading the dryer to ensure clothes can tumble freely.

  3. Inspect and clean the venting system, including the duct and exterior vent. Replace any damaged venting components to ensure proper airflow.

Limited-source guidance; percentages and success-rate claims are not shown
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. Brand new LG Dryer mildew smell

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