Ventilation & Ductwork Guides for Sea to Sky Homes

Why Bathroom Fan Venting Causes Attic Condensation

A bathroom fan vented into the attic dumps warm, humid air into a cold space where it condenses on the sheathing and framing. Here's why it happens and how to fix it.
Will My Existing Ducts Work With a Heat Pump?

Heat pumps generally need more airflow than the furnaces they replace, so existing ducts often need resized returns and reworked transitions to perform well.
Preparing Home Ventilation for Sea to Sky Winters

Cold and heavy snow change how home ventilation behaves. Here's what to watch on vent terminations, dryer and bathroom exhaust, and HRV systems through a corridor winter.
Rigid vs Flexible Dryer Vent Duct: Which to Use

Smooth rigid metal duct is the right choice for a dryer vent. Ribbed flexible duct traps lint, slows drying, and raises fire risk. Here is why, and where flex is still okay.
Why Your Dryer Takes Two Cycles to Dry

When a dryer needs two cycles, the vent is almost always the cause: a long or kinked run, ribbed flex, or a clogged exterior cap trapping the moist air it needs to exhaust.
Wall Cap vs Roof Cap: Which to Use for a Vent

A wall cap is usually simpler, lower-maintenance, and easier to keep weathertight than a roof cap. Here is when each makes sense for a bathroom, range hood, or dryer vent.
What Is Make-Up Air for a Range Hood?

Make-up air is fresh air brought in to replace what a powerful range hood exhausts. Without it, a strong hood can starve the house of air, stick doors, and backdraft other appliances.
Why One Room Has Weak Airflow

When a single room is always too hot, too cold, or stuffy, the duct feeding it is usually the cause (disconnected, crushed, kinked, or undersized), not the furnace or heat pump.
Do Heat Pumps Need Bigger Ducts Than Furnaces?

Heat pumps usually move more air at lower temperatures than the furnace they replace, so existing ducts and returns are often too small. Here is what that means for a retrofit.
HRV vs ERV: Which Suits a Squamish Home?

An HRV transfers heat only; an ERV transfers heat and some moisture. Both bring fresh air into a tight home and recover energy. Which fits depends on how your home handles humidity.
How to Photograph Your Ductwork for a Quote

A few good photos let me read most ventilation jobs without a site visit. Here is exactly what to shoot (the appliance, the duct route, the space, and the exterior) for a faster quote.
Can a Bathroom Fan Vent Into a Soffit?

Venting a bathroom fan into a soffit is a bad idea: the moist air gets pulled straight back into the attic through the intake vents. A dedicated exterior termination is the fix.

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