Failure to clean the dryer vent system is the leading cause of home clothes-dryer fires, according to the National Fire Protection Association (NFPA). Clean the lint filter before or after every load — never run the dryer without it — and have the vent pipe itself cleaned about once a year, or sooner if laundry is taking longer to dry than it used to. Keep the area around the dryer clear, plug it straight into a wall outlet, and turn it off before you leave the house or go to bed.
Lint is highly flammable, and it collects in two places: the lint filter (or lint trap) you clean by hand, and the vent pipe that carries hot, moist air outside, which most households never look at until something goes wrong. When that pipe fills with lint, air can't move through it properly, drying times stretch out, and the trapped lint sits next to a heat source for hours at a time.
The U.S. Fire Administration puts a number on it: from 2018 to 2020, failure to clean was the leading factor behind home clothes-dryer fires. That's historical data on the causes of fires that already happened, not a claim about how likely a fire is in any one home.
Sources: NFPA, "Clothes Dryer Safety" and USFA, "Appliance and electrical fire safety", as of September 2026.
| Task | Who does it | How often |
|---|---|---|
| Clean the lint filter | You | Before or after every load |
| Remove lint that's collected around the drum | You, or whoever services the dryer | Periodically, when you notice buildup |
| Clean out the vent pipe running to the outside | You, or a vent-cleaning service | About once a year, sooner if drying is slower than usual |
| Check the gas line and connection (gas dryers) | A qualified gas professional | As part of a regular check |
Never run the dryer with the lint filter removed. It's the first and easiest line of defense, and skipping it defeats the rest of the system.
NFPA's guidance is straightforward: about once a year, or more often if you notice it's taking longer than normal for your clothes to dry. That's a recommendation, not a fixed code interval, but it's a useful default if you've never had it checked. A vent that runs a long distance, has several bends, or serves a dryer used heavily by a large household may need attention more than once a year.
Booking appliance installation and repair is the straightforward way to get the vent pipe itself cleaned out, especially on a run that's hard to reach or has bends you can't get a brush or vacuum through yourself.
NFPA recommends rigid or flexible metal venting material to keep air flowing properly and drying times where they should be. If you're not sure what your current vent run is made of, or it looks like a plastic or foil-style hose, ask whoever services the dryer to take a look.
Sources: NFPA and USFA, as above, as of September 2026.
Every load of laundry sheds some lint that the filter doesn't catch, and over time it collects along the inside of the vent pipe, especially at bends, joints and anywhere the pipe narrows. A short, straight run to an exterior wall clears itself more easily than a long run with several turns, which is one reason dryers in a basement or an interior laundry room, with vent runs that snake through the house, often need more frequent attention than one vented straight out an exterior wall.
A gas dryer adds one more check: NFPA recommends having a qualified professional inspect the gas line and its connection to make sure it's intact and free of leaks. That's licensed gas-fitting work in Virginia, not something to check or adjust yourself. Mention it the next time you have the dryer or the vent serviced, and don't attempt to open or test a gas connection on your own.
If drying times have slowed down, or it's just been a while, book appliance installation and repair with an independent local Pro to have the dryer vent cleaned, and keep cleaning the lint filter yourself before every load.
Last updated September 2026.
The clearest sign is a load of laundry taking longer to dry than it used to, even though you're cleaning the lint filter every time. A burning smell, a dryer that runs hot to the touch, or lint visible around the outdoor vent flap are other signs to have it checked.
Cleaning the lint filter before or after every load is your job and takes seconds. Cleaning out the vent pipe itself is more involved, especially on a run that's long or has bends, so many households book it rather than doing it themselves.
Yes. NFPA recommends having a qualified professional check a gas dryer's gas line and connection to make sure it's intact and free of leaks. That's licensed gas-fitting work, not a DIY step.
NFPA recommends rigid or flexible metal venting to keep air flowing properly and drying times normal. If you're not sure what your vent run is made of, ask whoever services your dryer to check it.