Dryer Vent Cleaning in London, Ontario — When to Do It and Why It Matters

Most London homeowners know to clean the lint trap after every load. Far fewer know that the vent duct behind the dryer — the one running from the machine to the exterior wall — needs professional cleaning too. And when it's neglected long enough, the consequences go well beyond slow drying times.

This guide covers what dryer vent cleaning actually is, how to know when it's overdue, how often London homes typically need it done, and what a professional service includes.

What Is Dryer Vent Cleaning?

Your dryer pushes hot, moist air out of the drum and through a duct to the outside of your home. Every load deposits a small amount of lint inside that duct — lint that the trap missed. Over months and years, this accumulates into a restriction that:

• Forces the dryer to work harder and run longer to dry a load
• Drives up electricity (or gas) bills
• Shortens the dryer's lifespan
• Creates a fire hazard — lint is highly flammable and hot exhaust air is the ignition source

Dryer vent cleaning uses rotating brushes, compressed air, and a high-powered vacuum to clear the full length of the duct — from the dryer connection at the back of the machine to the exterior vent cap on your home's wall or roof. It's a different service from air duct cleaning (which addresses your HVAC system), though many companies offer both.

Warning Signs Your Dryer Vent Needs Cleaning

How Often Should a London Homeowner Have It Done?

Household Type	Recommended Frequency	Why
Couple or individual, 1–2 loads/week	Every 2 years	Lower lint accumulation rate
Family of 4, average laundry volume	Annually	Higher volume = faster lint build-up
Household with pets (dog, cat)	Annually or more	Pet hair in laundry accelerates clogging
Large family, 8+ loads/week	Every 6–12 months	High-volume dryer use accumulates fast
Long duct run (over 4m) or multiple elbows	Annually	Longer or more complex runs trap more lint
Flex/foil duct (older installation)	Every 6–12 months	Ridged interior traps lint; rigid metal duct preferred

The national recommendation (NFPA, appliance manufacturers) is at least once per year for most households. For London homes — which tend to be older and often have laundry rooms in interior spaces with longer duct runs — annual cleaning is a reasonable baseline.

London-Specific Factors

A few things make London homes particularly worth staying on top of:

• Older housing stock: Many London neighbourhoods — Byron, Wortley Village, Old North, Medway — have homes built in the 1950s through 1980s. These often have older duct installations with flexible foil or plastic ducting (which is less efficient and traps more lint than rigid metal) and longer duct runs through walls that weren't designed with dryer ventilation as a priority.
• Interior dryer locations: In older London homes, laundry is often in a central basement or upper floor — far from an exterior wall. Longer duct runs with multiple bends trap more lint and restrict airflow faster.
• Gas dryers: Homes with gas dryers should be especially attentive — a blocked vent on a gas dryer can cause carbon monoxide to back up into the home in addition to the fire risk from lint.

What Dryer Vent Cleaning Includes

A professional dryer vent cleaning service typically covers:

1. Disconnect and access: Pull the dryer away from the wall, disconnect the vent transition hose, inspect the condition of the connection and nearby duct section.
2. Brush and vacuum from inside: Rotating brush on a flexible rod is fed through the duct to break up lint accumulation. A high-powered vacuum extracts it.
3. Clean from outside in: The exterior vent cap is checked and cleared. In some cases the technician cleans from both ends for a complete result.
4. Inspect the vent cap: The exterior cap flap should open and close freely and not be partially blocked by nesting (birds commonly nest in dryer vents — a significant restriction and contamination issue).
5. Transition hose check: The flexible section between the dryer and the wall connection is inspected for kinks, tears, or use of unapproved materials (accordion-style plastic is a fire hazard and should be replaced with rigid metal or approved flexible metal).
6. Airflow confirmation: After cleaning, verify airflow at the exterior vent cap with the dryer running.

A typical residential dryer vent cleaning takes 45–90 minutes depending on duct length and condition. Cost in London typically runs $90–$150 as a standalone service, or less when booked alongside air duct cleaning.

Can You Clean a Dryer Vent Yourself?

You can buy a dryer vent cleaning kit at a hardware store — a flexible rod with a brush on the end. For short, straight vents (under 2 metres, no bends), DIY cleaning is reasonable annual maintenance.

Professional cleaning is recommended when:

• The duct run is long (over 3–4 metres) or has multiple elbows
• You don't know the duct route or can't access the full length
• You're seeing symptoms (slow drying, heat backup, burning smell)
• The exterior vent is on the roof rather than a wall
• The duct runs through finished walls with no access panels
• You suspect a bird nest or other obstruction

DIY tools rarely have the reach or suction to fully clear a complex or heavily loaded duct. If you're experiencing symptoms, professional cleaning is the right call — DIY may dislodge lint without fully extracting it, moving the blockage rather than removing it.

Dryer Vent vs. Air Duct Cleaning — What's the Difference?

These are two completely separate systems:

• Air ducts (HVAC): The network of metal ducts that circulates heated or cooled air throughout your home via your furnace and air handler. Air duct cleaning addresses the supply ducts, return ducts, and air handling components. Recommended every 3–5 years for most London homes.
• Dryer vent: A single duct that exhausts hot, lint-laden air from your dryer to the outside. Completely separate from your HVAC system. Recommended every 1–2 years for most households.

Some London homeowners assume air duct cleaning includes the dryer vent — it doesn't, unless explicitly included in the quote. Ask specifically when booking.