Cleaning supply and return ducts, dryer vents and HRV systems.
Typical GTA cost
$300 to $600 flat
Whole house, all vents, on a typical home. Be suspicious of anything advertised far below this range.
What this trade needs
We hold no licence to check for this category, so insurance and WSIB clearance are what a homeowner compares. That says what we hold, not what the province requires: nobody here has checked whether Ontario licenses this work. References and a written scope do the work a licence check would otherwise have done.
Ask before you hire
Is the price for every vent in the house, or per vent with a minimum?
Will you show me before and after photographs from inside the trunk?
Are sanitizing sprays extra, and is there evidence they do anything?
The very cheap advertised price is a lead generator. The real invoice arrives once the truck is in your driveway.
You asked for the trade Duct cleaning, and the words "basement wall insulation", and emergency or same-day service. Of the 12 businesses listed, none match every one of those.
The cost band and the licence requirements above still apply. They are what you need to judge a quote from anywhere else: whether the price is in the range, and whether the person quoting is allowed to do the work at all.
Listings here are seed data for demonstration and are labelled as such on each profile. Cost bands are what GTA homeowners are typically quoted, not offers. Always confirm a licence number against the issuing registry yourself before work starts.