Why cleaning or replacing the vent of your Samsung dryer is important?

Last Update Date : Jul 03. 2019
Vent maintenance

The entire vent should be routinely cleaned (or replaced) once or twice per year.

The provided information refers to appliances sold in Canada. The available settings and options may differ for devices sold in other countries.

Why lint buildup is dangerous?

Lint buildup in the exhaust ventilation can occur over time, particularly in creases, bends, and on or around the outside vent area. This lint is flammable and can ignite simply from the high heat a dryer expels, causing a house fire. Many models of Samsung dryers will detect if a vent is clogged and deactivate the heater for some or all of the drying cycle, as a safety measure. This results in clogged exhaust ventilation being the most common cause of a weak heat or no heat condition. Some models do not have this feature, so the clothes will get hot, but will still be damp (see next section for why). It is these latter models that are even more at risk of the warning above.


To help reduce the risk of lint buildup and prevent cloggage, Samsung recommends using rigid ventilation for proper exhaust operation, and to keep the exhaust duct cleaned typically once or twice a year.

How lint buildup reduces or prevents dry clothes

Some models reduce the heat of the dryer when the vent is detected as clogged. The heat reduction causes poor drying conditions.


In cases where the heater is still working, but clothes never get dry, this is due to the dryer being unable to exhaust all of the hot, moist air, typically due to a clogged lint filter or exhaust vent. On a Sensor Dry cycle, the dryer will detect that moisture is still in the drum and run the cycle longer because the clothes are not yet dry. In some cases, if the blockage is bad enough, the cycle may run indefinitely since the moisture has nowhere to go. On a Time Dry cycle, the cycle will simply end and the clothes will not be dry.

Why cleaning or replacing the vent of my Samsung dryer is important?

If the clothes get hot, but still come out damp, the moisture was unable to escape, and the lint filter and/or exhaust vent need to be cleaned.

Vent check sensor icon

On some models, a Vent Check Sensor icon is included to indicate when the dryer is detecting a blockage in the exhaust vent. If the dryer has a Vent Check Sensor light, and it is lit or blinking during or at the end of a cycle, clean the exhaust vent before performing any further troubleshooting.

Why cleaning or replacing the vent of my Samsung dryer is important?

When the duct work is approximately 60 percent blocked/clogged, the icon will light up. When the duct work is over 80 percent blocked/clogged, the icon will blink for 3 hours after a cycle is completed. Clogged ventilation ducts will result in lower efficiency, poor performance, and possible damage to the dryer or home. To avoid these issues, have the ventilation ducts cleaned regularly.

Practical examples

  • Example 1:
Why cleaning or replacing the vent of my Samsung dryer is important?

The image is from a typical dryer vent system. Please note that the end that connects to the dryer does not appear to be much of a concern, as the inside lining of the vent is still largely visible.

  • Example 2:
Why cleaning or replacing the vent of my Samsung dryer is important?

Note the excessive lint build up and how the inside lining of the vent is no longer visible at all. For this reason, the vent should be replaced.

The entire vent should be routinely cleaned (or replaced) once or twice per year.

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