Dryer Vent Cleaning: The Fire Hazard Most New Lenox Homeowners Ignore

According to the U.S. Fire Administration, dryers cause approximately 2,900 house fires per year in the United States. The leading cause — responsible for 34% of those fires — is failure to clean the dryer vent.

This is a fire hazard that most homeowners don't think about, don't see, and don't smell until it's too late.

Why Dryer Vents Become Fire Hazards

Every load of laundry produces lint — tiny fibers that come off clothing during the drying process. Your lint trap catches most of it, but a significant amount passes through and accumulates in the vent duct that runs from your dryer to the outside of your home.

Over time, this lint builds up and restricts airflow. When airflow is restricted, the dryer runs hotter. Lint is highly flammable. The combination of extreme heat and accumulated lint is exactly the conditions needed for a dryer fire.

Warning Signs Your Dryer Vent Needs Cleaning

Watch for these signs — any one of them warrants immediate attention:

• Clothes take more than one cycle to dry. This is the most common early warning sign. Restricted airflow means moisture can't escape efficiently.
• The dryer or clothes feel unusually hot. If the dryer exterior is hot to the touch or clothes come out hotter than normal, the system is overheating.
• A burning smell during operation. This is a serious warning sign. Stop using the dryer and have the vent inspected immediately.
• The laundry room feels hot and humid. Moisture and heat that should be venting outside are backing up into the room.
• The exterior vent flap doesn't open during operation. Go outside while the dryer is running. The flap on the exterior vent should open and you should feel warm air coming out. If it doesn't open, the vent is severely blocked.
• It's been more than a year since the last cleaning. Even without symptoms, annual cleaning is the recommended standard.

What Professional Dryer Vent Cleaning Includes

A professional cleaning involves disconnecting the dryer, using a rotary brush system to scrub the entire length of the vent duct, and a high-powered vacuum to remove all accumulated lint. The technician will also inspect the duct for damage, improper connections, or code violations (such as plastic flexible duct, which is a fire hazard and not permitted by current building codes).

DIY vs. Professional Cleaning

Brush kits for DIY dryer vent cleaning are available at hardware stores and work reasonably well for short, straight vent runs. For vents that run through walls, make multiple turns, or are longer than 10 feet, professional cleaning is more effective. The rotary brush equipment professionals use can navigate bends and reach the full length of the duct in a way that DIY kits cannot.

How Often to Clean

The National Fire Protection Association recommends at least once per year. If your household does 5+ loads of laundry per week, or if your vent run is long or complex, every 6 months is more appropriate.

New Lenox Heating offers dryer vent cleaning for $129 (regularly $169). Call 815-893-3642 to schedule.