{"id":24943,"date":"2026-10-18T15:28:54","date_gmt":"2026-10-18T19:28:54","guid":{"rendered":"https:\/\/blueguard.ca\/?p=24943"},"modified":"2026-10-18T15:28:55","modified_gmt":"2026-10-18T19:28:55","slug":"review-clogged-dryer-vent-rewrite-21759","status":"publish","type":"post","link":"https:\/\/blueguard.ca\/fr\/blog\/review-clogged-dryer-vent-rewrite-21759\/","title":{"rendered":"Clogged Dryer Vent? Warning Signs and How Often to Clean It"},"content":{"rendered":"

A clogged dryer vent usually gives itself away in five ways: clothes that need more than one cycle to dry, an outside flap that stays shut while the dryer runs, a laundry room that gets unusually hot, a burning smell, and lint piling up around the exterior vent.<\/strong> If you notice any of them, stop using the dryer for long loads and get the vent checked. As for how often to clean it, once a year is the baseline. Big households and long vent runs need it more often. Dryer vent cleaning with BlueGuard starts from $199.<\/p>\n\n\n\n

Here’s why it matters. The National Fire Protection Association puts it plainly in its clothes dryer safety tip sheet<\/a>: the leading cause of home clothes dryer fires is failure to clean them. And with winter coming, the dryer in most Ottawa homes is about to work a lot harder.<\/p>\n\n\n\n

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What are the warning signs of a clogged dryer vent?<\/h2>\n\n\n\n

These are the six we see most often on the job, roughly in the order homeowners notice them.<\/p>\n\n\n\n

1. Your clothes take two cycles to dry<\/h3>\n\n\n\n

This is the most common sign of a clogged dryer vent. Wet air has nowhere to go, so it hangs around in the drum. Towels come out warm and damp. Most people blame the dryer and start shopping for a new one. In our experience, the machine is usually fine and the vent is the problem.<\/p>\n\n\n\n

2. The outside flap doesn’t open<\/h3>\n\n\n\n

Go outside while the dryer is running. The flap or louvres on the exterior cap should push open and you should feel a strong, warm stream of air. If the flap barely moves, or stays shut, you’re likely dealing with a clogged dryer vent or a stuck flap. NFPA lists this exact check: make sure the outdoor vent flap opens when the dryer is operating.<\/p>\n\n\n\n

3. The laundry room gets hot<\/h3>\n\n\n\n

A clogged dryer vent traps heat. You’ll notice the room feels like a sauna, or the top of the dryer is hot to the touch. Some homeowners also see more humidity, like fogged windows in the laundry room.<\/p>\n\n\n\n

4. You smell something burning<\/h3>\n\n\n\n

A scorched or hot-lint smell during a cycle is a stop-now sign. Turn the dryer off. Don’t run it again until someone has looked at the vent.<\/p>\n\n\n\n

5. Lint is collecting where it shouldn’t<\/h3>\n\n\n\n

Check around the exterior cap, behind the dryer, and inside the drum opening under the lint screen. Lint in those spots is a classic clogged dryer vent sign: it’s backing up instead of blowing out.<\/p>\n\n\n\n

6. It’s been more than a year<\/h3>\n\n\n\n

No symptoms doesn’t mean no buildup. If you can’t remember the last time the vent was cleaned, it’s due. A clogged dryer vent builds slowly and quietly.<\/p>\n\n\n\n

\"Clogged
<\/figcaption><\/figure>\n\n\n\n

Here’s a quick way to read what you’re seeing:<\/p>\n\n\n\n

What you notice<\/th>What it usually means<\/th>What to do<\/th><\/tr><\/thead>
Two cycles to dry<\/td>Airflow is restricted somewhere in the run<\/td>Book a vent cleaning<\/td><\/tr>
Exterior flap stays shut<\/td>Blockage, crushed duct, or a stuck flap<\/td>Check outside, then book<\/td><\/tr>
Hot laundry room<\/td>Heat can’t escape through the vent<\/td>Shorten loads, book soon<\/td><\/tr>
Burning smell<\/td>Lint is getting too hot<\/td>Stop using the dryer now<\/td><\/tr>
Lint around the cap or behind the dryer<\/td>Lint is backing up<\/td>Book a vent cleaning<\/td><\/tr>
No cleaning in over a year<\/td>Buildup you can’t see yet<\/td>Book a routine cleaning<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
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Why does a clogged dryer vent turn into a fire risk?<\/h2>\n\n\n\n

Lint is fuel. It’s fine, dry and fluffy, and your lint screen doesn’t catch all of it. The rest gets blown into the vent, where it sticks to the walls and piles up at every bend.<\/p>\n\n\n\n

As the pile grows, less air gets out. Less airflow means the heat stays inside the dryer and the vent instead of leaving the house. So you’ve got a growing pile of fuel sitting right where the heat is building. That’s a clogged dryer vent in one sentence.<\/p>\n\n\n\n

\"How
<\/figcaption><\/figure>\n\n\n\n

The vent itself makes a difference too. We still pull out white plastic and thin foil accordion duct in Ottawa homes, crushed behind the dryer. NFPA recommends rigid or flexible metal venting to keep air moving properly. If yours is plastic, replace it.<\/p>\n\n\n\n

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How often should you clean a dryer vent?<\/h2>\n\n\n\n

Once a year for most homes. That’s NFPA’s guidance too: clean the vent once a year, or more often if your clothes are taking longer than normal to dry. Some homes end up with a clogged dryer vent sooner because lint builds up faster.<\/p>\n\n\n\n

Your home<\/th>How often to clean the vent<\/th><\/tr><\/thead>
One or two people, short vent straight out the wall<\/td>Once a year<\/td><\/tr>
Family of four or more, daily laundry<\/td>Every six to nine months<\/td><\/tr>
Long run, several bends, or a vent that exits on the roof<\/td>Every six to nine months<\/td><\/tr>
Pets that shed<\/td>Every six to nine months<\/td><\/tr>
Any home where drying time has crept up<\/td>Now, then back to a regular schedule<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Long runs are common in newer Barrhaven, Riverside South and Kanata townhomes, where the laundry sits on the second floor and the vent travels through a ceiling to the roof. That’s where we find a clogged dryer vent most often, sometimes packed solid, because nobody can see it and nobody can reach it.<\/p>\n\n\n\n

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Why is a clogged dryer vent worse in winter?<\/h2>\n\n\n\n

Three reasons, and Ottawa gets all three.<\/p>\n\n\n\n