Air ducts crushed under renovation debris in Greater Vancouver

If airflow dropped off after a renovation, the ductwork may have been crushed or pinched by stacked materials, dropped tools, or debris piled in the crawlspace, basement, or attic during the work. Flexible duct in particular flattens easily, and once it is pinched, the air simply cannot get through. This is a common surprise after Greater Vancouver basement and suite renovations.

How renovation work crushes ducts

During a reno, ducts are often the most fragile thing in the way. Crews step on flex runs in a crawlspace, stack drywall or lumber on top of duct boots, or let debris bury a line so it bends sharply. Even rigid metal trunk can get dented if something heavy lands on it. The flow chokes at the crush point, starving every register downstream.

The signs usually appear right after the project: one or more rooms suddenly get weak airflow, the system runs longer, and you may hear extra rushing noise as air forces past the restriction. In suite conversions, where ducts are rerouted around new walls, kinks and crushes are especially common.

• Flex duct stepped on or flattened during the work
• Materials stacked on top of duct runs or boots
• Debris burying and bending a line in a tight space
• Dents in rigid trunk from dropped tools or materials

What you can check and the fix

Safely, you can clear any boxes, materials, or debris off accessible duct runs in the basement or crawlspace, and from a hatch look for an obviously flattened or sharply bent section. Confirm the affected room's register is open and the filter is clean so you are not chasing the wrong cause.

Reshaping a crushed run, replacing a damaged section, or re-supporting flex so it does not sag and kink again is work for a licensed HeatLand technician. They can map the duct, find the restriction, and restore proper airflow without creating new pinch points.

• Remove anything stacked or piled on accessible ducts
• Look for flattened or sharply bent sections from a hatch
• Confirm the room's register is open and filter is clean

Frequently Asked Questions

Why did one room lose airflow right after my renovation?

A duct serving that room was likely crushed, pinched, or knocked loose during the work. The restriction starves that register while the rest of the home may seem normal.

Can a crushed flex duct just be straightened?

Sometimes a gentle crush can be reshaped and re-supported, but a badly kinked or torn section usually needs replacing. A technician will judge which approach restores full flow.

Could debris inside the duct be the problem instead?

Yes, renovation debris can also fall inside open ducts and block them. A pro can determine whether the issue is a crush, internal blockage, or both.

How do I prevent this on future projects?

Ask trades to keep materials off duct runs and protect exposed flex, and have the ductwork checked after any project that worked near it.

HeatLand Heating & Cooling is a licensed and insured, TSBC-certified HVAC company serving homeowners across Greater Vancouver. Our technicians diagnose the real fault, explain your options in plain language, and complete the work safely and to code.

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