Dryer Vent Booster Fan Cleaning
Keep your inline booster fan running at peak performance
- Booster fan access and inspection
- Fan blade and housing lint removal
- Motor inspection
- Airflow measurement before and after
- Pressure switch testing
- Vent cleaning around fan location
- Electrical connection check
- Performance verification and documentation
A Dirty Booster Fan Defeats Its Own Purpose
If your vent run exceeds 25 equivalent feet, building code requires an inline booster fan to maintain proper airflow. These fans work well — until lint coats the blades, clogs the housing, and restricts the motor. A dirty booster fan doesn't just underperform; it can actually create a bottleneck worse than having no fan at all. The restricted blades trap lint, the motor overheats, and eventually the fan fails completely — often without the homeowner noticing until the dryer stops drying. Since booster fans are typically installed in attics, crawlspaces, or wall cavities, they're out of sight and out of mind.
How it works
Every step is designed for thoroughness, transparency, and your peace of mind.
Fan Location & Access
We locate your booster fan — typically in an attic, crawlspace, or utility space. We verify power is disconnected before opening the fan housing.
Housing & Blade Cleaning
We open the fan housing and remove all lint from the blades, interior walls, and intake/exhaust ports. Lint-packed blades can reduce airflow by over 50% and cause the motor to overheat.
Motor Inspection
We inspect the motor for signs of overheating, bearing wear, or lint intrusion. Early detection of motor issues can prevent a sudden failure that leaves your dryer completely non-functional.
Pressure Switch Test
Most modern booster fans activate via a pressure switch that detects dryer operation. We test the switch to ensure the fan activates properly when the dryer runs and shuts off when it stops.
Airflow Verification
With the fan cleaned and reassembled, we measure airflow at the exterior hood with the dryer running. This confirms the fan is boosting airflow as designed.
Why this service matters
Restore Full Airflow
A clean booster fan restores the airflow boost it was designed to provide, often recovering 50%+ of lost performance.
Prevent Fan Failure
Lint-packed motors overheat and fail prematurely. Regular cleaning extends fan lifespan from 2-3 years to 5-7 years.
Avoid Expensive Replacement
A new booster fan installed costs $300-500. Regular $60 cleanings can triple the fan's operational life.
Maintain Code Compliance
If your vent run requires a booster fan by code, a non-functional fan means your system is non-compliant — relevant for insurance and home sales.
Complete System Maintenance
Cleaning the vent without cleaning the booster fan is like changing your oil but not your oil filter. Both need to be maintained together.
Peace of Mind
Since booster fans are hidden in attics and walls, most homeowners have no idea if theirs is working. Our service confirms it's operational.
Signs Your Booster Fan Needs Cleaning
If you recognize any of these signs, don't wait. The risk only increases with time.
Book Now — Same-Day AvailableIs this service right for you?
This service is designed for:
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See why hundreds of families across Calgary choose The Dryer Vent Cleaning Co. for their dryer vent cleaning.
Frequently asked questions
Everything you need to know about booster fan cleaning.
How do I know if I have a booster fan?
If your vent run exceeds 25 equivalent feet (accounting for bends), you likely have one. They're usually installed in attics, crawlspaces, or soffits. We can check during any vent cleaning appointment — many homeowners don't know they have one.
How often should the booster fan be cleaned?
Every 1-2 years, ideally at the same time as your vent cleaning. High-use households or homes with pets may benefit from annual fan cleaning.
Can you replace a failed booster fan?
Yes. If your fan motor has failed, we can quote and install a replacement. We carry the most common residential models. Typical replacement cost including installation is $300-500.
What if my booster fan isn't activating?
The most common causes are a failed pressure switch, a disconnected electrical connection, or a burnt-out motor. We diagnose the issue during cleaning and can often fix it same-day.
Is the booster fan included in regular vent cleaning?
Basic booster fan inspection is included in every vent cleaning. The full cleaning service (opening the housing, cleaning blades and motor area) is a $60 add-on because it requires additional time and access.
Still have questions?
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Same-day appointments in all service areas.
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