Massachusetts Air Duct Pros guide
Snow, Ice, and Your Dryer Vent: A Massachusetts Winter Checklist
In a Massachusetts winter, the exterior dryer vent hood can be covered by falling, drifting, or shoveled snow. Keep the hood clear after every storm, check outside that exhaust air is leaving while the dryer runs, and clean the lint screen with every load. If airflow stays weak once the hood is clear, lint inside the duct is the next thing to check.
Updated October 19, 2026Sources listed below
Why winter matters for dryer vents here
NOAA's state climate summary describes Massachusetts winters as cold and snowy and notes that the coastline is highly vulnerable to damage from powerful nor'easters. The Department of Energy's Building America guide places every county in the state in its Cold climate region.
A dryer pushes warm, moist, lint-carrying air outdoors. When the exterior hood is buried or its flap can't open, that air has nowhere to go.
Sources: NOAA NCEI, State Climate Summaries 2022: Massachusetts; U.S. DOE Building America / PNNL, Guide to Determining Climate Regions by County (2015)
After-storm checklist
A few minutes after each storm covers most of what a homeowner can do from the outside.
- Clear snow from the vent hood and the area in front of it with a gloved hand or soft brush so you don't crack the hood.
- Don't pile shoveled or plowed snow against the wall where the vent exits.
- Run the dryer and check outside that exhaust air is coming out, as CPSC recommends.
- Make sure the outdoor vent covering opens when the dryer is operating (USFA); ice may hold a flap shut.
- Check the other vents too: the U.S. Fire Administration's reminder covers furnace, stove, fireplace, and dryer vents.
Sources: U.S. Fire Administration, Pictograph: Clear furnace, stove, fireplace and dryer vents; U.S. CPSC, Overheated Clothes Dryers Can Cause Fires (Publication 5022); U.S. Fire Administration, Clothes Dryer Fire Safety (flyer)
Gas dryers and carbon monoxide alarms
If your dryer burns natural gas or propane, it is a fuel-burning appliance. CPSC's carbon monoxide guidance says appliances should be installed and operated according to the manufacturer's instructions and local building codes, and it recommends battery-operated or battery-backup CO alarms on every level of the home and outside sleeping areas.
Gas line and appliance repair are not part of dryer vent cleaning. If you suspect a problem with a gas dryer, contact a qualified gas appliance technician or your gas utility.
When the problem is inside the duct
CPSC explains that lint can build up in the dryer or exhaust duct, block airflow, and cause excessive heat. Clothes that are still damp after a normal cycle, or drying that takes longer than usual, may be a sign that the lint screen or exhaust duct is blocked. The U.S. Fire Administration reports that failure to clean was the leading factor (31%) contributing to home clothes dryer fires from 2018 to 2020.
Clearing snow fixes the outlet; it doesn't remove lint that has settled along the duct. A vent cleaning addresses that buildup and lowers one known risk factor, but it can't rule out every cause of a dryer fire, so keep cleaning the lint screen before or after every load.
Sources: U.S. CPSC, Overheated Clothes Dryers Can Cause Fires (Publication 5022); U.S. Fire Administration, Appliance and Electrical Fire Safety