CLEANING DRYER VENTS FROM THE OUTSIDE
Cleaning dryer vents from the outside is just as critical as doing it from the inside. Dryer vent lint gets stuck from the back of the dryer to the outside vent quickly depending on the amount of laundry you do. Dryer lint will clog over time and restricts airflow. The result is clothes take longer to dry and the cost of energy increases due to how much electricity is required.
SAVE YOURSELF:
- Money – less energy to dry clothes
- Electricity – less impact on the environment
Exterior vents don’t just get plugged — they can also dry out and crack over time. Many exterior vents are plastic, and the temperature swings between a hot dryer exhaust and cold winter air can cause the plastic vent flap to crack, break, or seize up. It’s good practice to inspect it yearly and replace it when needed to maintain proper airflow.
How to Clean Your Dryer Vent From Outside: Step by Step
- Unplug or turn off the dryer before starting, for safety.
- Locate the exterior vent hood on the outside of your home — usually a small flap or louvered cover where the dryer exhaust exits.
- Remove the vent cover, if it’s removable, or open the flap fully to access the duct opening.
- Clear visible lint by hand first, removing any large clumps blocking the opening.
- Use a vent brush or vacuum attachment to reach further into the duct — extendable, drill-powered duct brush kits are designed for exactly this and can clear lint several feet into the vent run.
- Check that the flap opens and closes freely once cleared — a flap that won’t move properly is a sign of damage, not just lint buildup.
- Reattach and reseal the cover, using proper caulking around the edges to keep out moisture and pests.
- Run the dryer for a few minutes afterward to confirm strong airflow is exiting the vent.
If your vent exhaust is higher than 10 feet or located on the roof, this is the point where hiring a professional makes more sense than continuing the DIY approach — see below.
When to Hire a Professional Instead
Cleaning from ground level with the steps above is the less expensive route. But if your dryer vent exhaust is higher than 10 feet or located on the roof, that’s the point to call a professional rather than continue DIY. Vacu-Man Furnace and Duct Cleaning can clean your dryer vents from the outside, replace any broken vent covers, and seal the dryer exhaust cover with proper caulking so it doesn’t leak or let animals in.
CLEAN YOUR LINT TRAP
Lint builds up after every use in your clothes dryer, and that’s a real problem — it’s a leading cause of clogged dryer ducts and a genuine fire hazard. Lint is highly flammable, and ignition can come from a static spark, friction, or simply the dryer’s own heat reaching the lint’s low ignition point once enough has built up.
Why Is There Condensation Inside My Dryer or Vent?
If you’re noticing water, moisture, or a puddle inside your dryer or vent, that’s a separate issue from lint buildup — and a common one. A few likely causes:
- A vent run that’s too long or has too many bends. Warm, moist air from the dryer cools as it travels, and if it has too far to go, it can condense inside the ductwork before it ever reaches outside.
- A disconnected or damaged vent line. If warm air is escaping into an unconditioned space like an attic or crawl space instead of venting outdoors, it can condense there — and sometimes travel back into the dryer cabinet.
- Cold weather. A sharp temperature difference between warm exhaust air and cold outdoor air can cause condensation right at the point where the vent meets the outside, especially in winter.
- A blocked vent trapping moist air inside. If lint or debris is restricting the vent, moisture-laden air has nowhere to go and can condense inside the dryer itself.
If you’re seeing consistent moisture and a full cleaning doesn’t resolve it, the vent run’s length, routing, or connection points are worth having inspected — this often points to an installation issue rather than a cleaning one.
GOOD DRYER VENT CLEANING TIPS
- Clean it every 3 – 6 months if you’re doing a lot of laundry. (every day, or other day)
- 6 months to 1 year – if you’re doing an average load of laundry. (once or twice a month).
- Cleaning the build up in your dryer with a vacuum cleaner or a shop vac is easy and doesn’t require a professional.
- If your laundry room is getting warmer when drying your clothes you may need to have your dryer vent cleaned.
Get a quote today or if you’re concerned about the chance of a dryer fire, please contact Vacu-Man or you can use our quick estimate online.
Vacu-Man provides dryer vent cleaning in Hamilton, Burlington, Oakville, Grimsby, and St. Catharines.
Frequently Asked Questions
How do I clean my dryer vent from outside?
Unplug the dryer, locate the exterior vent hood, remove or open the cover, clear visible lint by hand, then use a vent brush or vacuum attachment to reach further into the duct. Reseal the cover with caulking afterward and run the dryer to confirm strong airflow.
Why is there condensation or a puddle inside my dryer?
This usually points to a vent run that’s too long, has too many bends, is disconnected, or is blocked — causing moist exhaust air to condense before it fully exits. It’s a separate issue from lint buildup and may need a professional inspection if cleaning alone doesn’t fix it.
Can I clean a dryer vent from the outside myself?
Yes, for vents at ground level or easily reachable heights. If your exhaust is higher than 10 feet or on the roof, it’s safer and more effective to call a professional.
How often should I clean my dryer vent?
Every 3 to 6 months if you do laundry daily or every other day. Every 6 months to a year is reasonable for average use, roughly once or twice a month.