The Hidden Danger of a Disconnected Dryer Vent: Carbon Monoxide Poisoning

A disconnected dryer vent might seem minor — but for gas dryers, it can be deadly. When a gas dryer’s vent comes loose or is blocked, carbon monoxide (CO) can leak into your home instead of venting outside. In just the last week alone I have seen two homes where vents were disconnected, creating serious risk for the home owner’s.

Why It’s Dangerous

Gas dryers burn natural gas or propane to create heat. This process produces carbon monoxide — an odorless, colorless gas that can cause serious illness or even death if inhaled.
A loose or crushed vent allows CO to spill into your laundry room instead of being safely expelled outdoors.

Warning Signs

• Laundry room feels hot or humid

• Burning or musty odor while drying clothes

• Clothes take longer to dry

• Lint buildup around the vent connection

• Carbon monoxide alarm going off

If you notice any of these, stop using your dryer immediately and have it inspected.

How to Prevent CO Leaks

1. Check the vent connection – Make sure it’s tightly secured and undamaged.

2. Clean the vent annually – Lint clogs can trap exhaust gases.

3. Install CO detectors – Especially near bedrooms and the laundry area.

4. Vent outdoors only – Never into attics, crawl spaces, or garages.

5. Schedule annual inspections – Have a professional check all gas appliances.

The Bottom Line

A disconnected dryer vent isn’t just a maintenance issue — it’s a life-threatening hazard. Regular inspections, vent cleaning, and working carbon monoxide alarms can protect your home and your family.