January 25, 2008   - Consumer reports

Recent incidents in New York, New Jersey, North Carolina point to the dangers of dryer fires. In fact, on average, more than 13,000 fires start in laundry rooms in the United States each year, resulting in 10 deaths and $97 million in property damage. Nearly 4,000 of these fires arise from lint buildup that occurs when people fail to clean their dryer vents. The following advice can help you prevent a disaster.

 When it comes to dryer fires, flexible dryer ducts made of foil or plastic are the most problematic because they can sag and let lint build up at low points. Ridges can also trap lint. Metal ducts, either flexible or rigid, are far safer because they don't sag, so lint is less likely to accumulate. What’s more, if a fire does start, a metal duct is more likely to contain it.

 No matter which kind of duct you have, clean it regularly. Also clean the lint screen each time you use your dryer and get rid of any lint inside, behind, and underneath the dryer. These simple steps will not only reduce the risk of a fire, but your dryer will also dry your clothes faster and use less energy.

Anatomy of a Dryer Fire

Dryer fires usually start beneath the dryer when the motor overheats. Overheating is caused by a build-up of lint in the duct that increases the drying time and blocks the flow of air. Naturally, any lint that has collected under the dryer will burn and the draft from the dryer will pull that fire up into the duct, since the duct may be coated or even blocked with lint, many times a house fire results. Other contributing conditions may include failure of the thermostat and limit switches in the dryer, lint inside the dryer, a missing or damaged lint screen, a crushed hose behind the dryer, or a bird’s nest or other, debris blocking the vent.

Dryer Fire Fact Sheet

Statistics and Implications

- Dryer exhaust fires now surpass creosote (chimney) fires in frequency on a national level. In 1998, the most recent statistics available, the Consumer Product Safety Commission reports that over 15,600 dryer fires occurred, killing 20 people, injuring 370 more and causing over $75.4 million in property damage. According to the CPSC, in most of these cases the culprit was lint getting into the machine’s heating element, sparking and fueling a fire. Not surprisingly, some fire departments and insurance companies now require that dryer vents be inspected and cleaned regularly.

- With gas dryers, there is also concern of carbon monoxide (CO) poisoning. Since lint and flue gases use the same avenue of exit from the house, a blocked vent can cause CO fumes to back up into the house. These fumes are colorless and odorless and they can be fatal. Low-level CO poisoning mimics flu symptoms (without the fever): headache, weakness, nausea, disorientation and deep fatigue. At higher levels, occupants can fall asleep, lapse into a coma and die.

 

DRYER VENT CLEANING
Besides running the possible risk of the Dryer Exhaust Vent catching on fire, if your dryer is gas operated, the possibility of Carbon Monoxide is ever present.

The above facts are in no way meant to scare you, but for you to realize the importance and need for this service.
If you think your clothes are taking longer to dry, your dryer is getting pretty hot, it feels quite warm and stuffy in your laundry area or lint is appearing all around your laundry area, it may be time to clean it.
As you use your clothes dryer, your dryer's lint filter only captures between 40%-60% of the lint.

The remaining lint is sent through the exhaust system with the other debris and warm moisture laden exhaust air.
This buildup makes your dryer take longer to dry your clothes causing more wear and tear on the dryer and clothes, and increased operating cost, both for energy to operate your clothes dryer and increased maintenance costs.

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Warning Signs

 

Inspection Frequency

Most vents should be cleaned every year. Dryer Vent Cleaning is the only solution.

Some dryer vents need attention more often. Determining factors include:

- How heavily the dryer is used
- How long the vent is / angles and the materials used. Shorter vents usually blow better.
- The age and type of dryer and venting used.
- The design of the vent. Those with a lot of turns and elbows blow worse and build up more lint.