How common dryer fires are
Citing the National Fire Protection Association, MAPFRE Insurance says that between 2014 and 2018 fire departments across the United States responded to an estimated 13,820 fires in which clothes dryers ignited. Those fires averaged seven deaths, 344 injuries and $233 million in property damage a year. CBS reports the U.S. Fire Administration finds dryer fires are more common in fall and winter, peaking in January.
What to do
- Clean the lint filter. The NFPA advises cleaning it before or after each load, and never running the dryer without one.
- Clean the vent. The NFPA says to clean the vent pipe "once a year, or more often if you notice that it is taking longer than normal for your clothes to dry." You can also hire a dryer lint removal service.
- Check the outdoor flap. CBS notes the outdoor vent flap should open while the dryer runs and the exhaust pipe shouldn't be restricted.
- Use the right duct. The NFPA recommends "rigid or flexible metal venting material."
- Don't run it unattended. The NFPA says to turn the dryer off when you leave home or go to bed.
The sign to watch for
The one warning sign both sources name is clothes taking longer than normal to dry. That usually means the vent is restricted, so clean it before the next load.
Gas dryers and installation
The NFPA advises having a dryer installed and serviced by a professional and having gas dryers inspected for leaks. If you smell gas, leave the building and call 911 and the gas utility before anything else. For landlords, a yearly vent cleaning between tenants is an easy item to put on the schedule.
Sources
Every figure above comes from one of these. Where they disagree, the post says so rather than averaging them into a single number.