Why Is Your Dryer Producing Condensation?

September 7, 2023

Finding condensation in your dryer after a load? It's a common problem that can lead to wet, musty clothes and increased energy bills. But don't worry - in most cases, the cause is easy to identify and fix yourself.

In this comprehensive guide, we’ll cover the top reasons you might see condensation in your dryer and actionable tips to solve the problem for good.

What Causes Condensation in a Clothes Dryer?

Before diving into solutions, it helps to understand what causes condensation in a dryer in the first place.

Condensation occurs when warm, moist air from the dryer drum comes into contact with cool air from outside the appliance. As the warm air cools rapidly, the moisture condenses.

Here are the most common culprits of dryer condensation:

Improper Dryer Location

Where you place your dryer in your home can contribute to condensation issues. If your dryer is in a cold, damp area like a garage or basement, the cool ambient air can seep into the dryer and cause condensation to form.

For best results, situate your dryer in a warm, well-ventilated room in your home. However, if relocating it isn't an option, using a dehumidifier can help remove excess moisture from the air.

Clogged Lint Filter

Believe it or not, a clogged lint filter is one of the most common causes of dryer condensation. When the filter gets overloaded with lint and debris, it restricts proper airflow and ventilation.

This causes warm, humid air to get trapped in the dryer drum. And as it has nowhere to go, it condenses into water droplets.

Damaged Door Seal

If the rubber seal around your dryer door is cracked or ripped, it can allow cool air to seep into the appliance while running a hot cycle. This rapid mix of temperatures leads to condensation.

Carefully inspect the door seal for any gaps, tears or holes. If it’s damaged, the seal will need to be replaced.

Clogged Vent Duct

Just like a clogged lint filter, a blocked vent duct also impedes proper airflow and ventilation. This causes warm, moist air to back up inside the dryer instead of exiting outdoors. The result? Condensation.

To prevent this, it’s critical to clean your dryer vent duct at least once a year to remove any lint buildup.

Poor Vent Duct Positioning

How and where your vent duct is positioned can also lead to condensation. For example, running the ductwork through your hot attic allows the air to heat up again before exiting the home.

Excessively long ducts that have too many twists and turns can also be problematic, as the moist air loses heat before exiting. Both scenarios increase condensation risk.

Missing Vent Flap

A vent flap is a small door inside the vent duct that seals closed when the dryer isn’t in use. This prevents outside air from entering the appliance and condensing.

If your dryer doesn’t have one, or the existing flap is stuck open or broken, it’s a good idea to install a replacement.

How to Fix Condensation in Your Dryer

Now that you know what causes dampness inside your dryer, here are some tips to solve the problem:

Relocate the Dryer

If possible, move your dryer to a warmer, drier area of your home that has good airflow. This will help reduce condensation significantly.

Clean the Lint Filter

Remove and clean the lint filter after every single load - no exceptions! Lint buildup is one of the most preventable causes of dryer condensation.

Replace Door Seal

Carefully inspect the rubber door seal for any cracks, holes or gaps. If it’s damaged, replace the seal right away.

Clean the Vent Duct

Disconnect the vent duct from the dryer and use a vacuum hose or special duct brush to remove lint buildup. Do this at least once per year.

Optimize Vent Duct Position

Ideally, the vent duct should be as short and straight as possible. Avoid routing it through rooms like attics that can re-heat the air.

Install a Vent Flap

Add a vent flap if your dryer doesn’t already have one. This will seal the duct when not in use.

When to Call a Technician

If you’ve addressed all of the common DIY fixes listed above but are still encountering condensation, it’s time to call in a professional. Excess moisture could be a sign of a bigger problem like a faulty heating element or thermostat.

Our Company can diagnose the issue and advise whether it makes sense to repair or replace your machine. Contact us and our technicians will dryer repair as soon as possible.


Condensation in your dryer is an annoyance, but also a sign that something is wrong. With this guide, you now know how to identify and fix the most common causes of dryer condensation on your own.

Catching and addressing problems early prevents long-term damage to your appliance. However, if DIY efforts don’t resolve the issue, don’t hesitate to call a professional for service.

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