Quick Answer
Most Ottawa homeowners pay $300 to $600 for a professional, whole-system duct cleaning in 2026, depending mainly on the size of the home and the number of vents. Offers under $150 almost never cover the whole system. Prices around $189–$249 can be legitimate for smaller homes — but only once you know exactly what’s included.
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If you’ve started shopping around for duct cleaning in Ottawa, you’ve probably noticed the prices are all over the place. One ad says $99, another company quotes $500, and it’s hard to tell what a fair price actually is.
This guide covers what Ottawa homeowners really pay in 2026, what pushes the price up or down, and how to tell whether a cheap offer is a good deal or a bait-and-switch.
Average Duct Cleaning Cost In Ottawa (2026)
For a professional cleaning of the whole duct system — every supply and return line, plus the main trunk lines — most Ottawa homes land between $300 and $600 before tax.
Independent data backs this up. HomeStars’ Ottawa cost guide, built from 404 verified homeowner reviews, puts the average duct cleaning at $436. That figure dates back to 2020, so today’s average is likely a little higher.
Duct Cleaning Cost By Home Size
The biggest thing that sets your price is the size of your home — or more precisely, how many vents it has. Here’s what to expect:
| Home Size | Typical Vents | Typical Cost |
|---|---|---|
| Condo or townhome | 8–12 | $200–$350 |
| Detached home (up to 2,000 sq ft) | 12–18 | $350–$500 |
| Large home (2,000+ sq ft) | 18–25+ | $500–$700+ |
Packages that also clean the furnace blower and AC coil, or add sanitizing, sit toward the top of each range. Homes with two furnaces have two separate systems, so expect to pay more.
How To Count Your Vents
Count every supply register (where air blows out) and every return grille (where air gets pulled in). Most people undercount the returns — they’re the larger grilles, often in hallways or low on walls. Knowing your number makes it much easier to compare quotes.
What Affects The Price Of Duct Cleaning
1. The number of vents
More vents means more lines to clean and more time on the job. Most companies include a set number of vents in their base price and charge for each extra one, so this is the first thing to ask about.
2. The size and layout of your home
A bungalow with short, simple duct runs is quicker to clean than a large two-storey home with long runs and several branches.
3. How much buildup there is
Ducts that have never been cleaned, homes with pets, and homes that just went through a renovation tend to have much heavier buildup, and benefit most from having the furnace blower and AC coil cleaned too.
4. The equipment used
Truck-mounted systems are far more powerful than portable vacuums and pull debris straight out of your home, but they cost more to run. A big price gap between two quotes often comes down to this.
5. Add-on services
Dryer vent cleaning, sanitizing, and furnace blower cleaning all add to the total. Bundling them into one visit is usually cheaper than booking them separately.
Are Low-Ball Duct Cleaning Offers Legit?
Ottawa homeowners see a steady stream of cheap duct cleaning ads. Some are fair starting prices for small homes. Others are designed to get a crew through your door and make the money back later. Here’s how to read the price you’re seeing:
| Price You See | What It Usually Means |
|---|---|
| Under $150 | Almost never a full-system cleaning. Expect a few vents, a portable vacuum, and pressure to add services once the crew is inside. |
| $189–$249 "starting at" | Can be legitimate for a smaller home. It's a starting price that covers a set number of vents — your total depends on what's included and what extra vents cost. |
| $300–$600 | The typical total for a proper whole-system cleaning of most Ottawa homes. |
The Better Business Bureau has warned that social media ads promising low prices are a common source of duct cleaning complaints, and the Competition Bureau of Canada lists air duct cleaning among the services scammers push “at bargain rates” by phone and door-to-door.
How Low-Ball Offers Make Their Money
- Only a handful of vents are included, with high fees for every extra one.
- The main trunk lines — where most of the debris collects — aren’t cleaned at all.
- A small portable vacuum is used instead of a truck-mounted system.
- Once inside, the crew “finds” mold or another problem and pushes expensive add-ons on the spot.
Compare the total, not the headline price
A lower starting price doesn’t always mean a lower bill. Take two quotes for the same home with 15 vents:
| Quote A | Quote B | |
|---|---|---|
| Advertised price | $149 | $349 |
| Vents included | 5 | 12 |
| Extra vent fee | $30 each | $15 each |
| Total for 15 vents | $449 | $394 |
The “cheap” quote ends up costing more — and that’s before any surprise add-ons.
Before
AfterRed Flags To Watch For
- Unsolicited calls or door-knocking with a limited-time deal.
- Ads that don’t clearly name the company, or a company that won’t give you its name, contact person and phone number before the truck shows up — a “huge red flag,” according to the BBB.
- A “starting at” price with no total for your home.
- Surprise problems found on the spot, like mold, with pressure to pay for extra treatment right away.
- No before and after photos offered, so you can’t see what was actually done.
How To Tell If A Duct Cleaning Quote Is Fair
Whoever you hire, ask these questions before you book. A good company will answer every one of them without hesitating:
- How many vents are included, and what does each extra vent cost?
- Are the main trunk lines cleaned, or just the vents you can see?
- Do you use truck-mounted equipment or a portable vacuum?
- Will I get before and after photos of the work?
- What is my total price, including tax? Get it in writing before the crew arrives.
Want to see how local companies answer these? We compared the best duct cleaning companies in Ottawa side by side on price, equipment, reviews and certifications.
Is Duct Cleaning Worth The Cost?
Most homes only need a duct cleaning every 3 to 5 years. Spread over that time, a typical $300–$600 cleaning works out to roughly $60 to $200 a year.
It’s most worth it if you have pets, someone in the home has allergies, you’ve just renovated, you’ve moved into a home with an unknown history, or you’re seeing dust come back soon after you clean. Read more about the benefits of duct cleaning.
The Bottom Line
In 2026, most Ottawa homeowners pay $300 to $600 for a proper whole-home duct cleaning, depending on the size of the home. Offers under $150 are rarely what they seem, and starting prices around $189–$249 can be fair — as long as you compare the total for your home and know exactly what’s included.
Colair’s flat-rate duct cleaning starts at $299, and we serve Ottawa, Kanata, Barrhaven, Orleans, Nepean, Stittsville, and the surrounding area.
Sources: HomeStars — Duct Cleaning Cost Guide For Ottawa; Competition Bureau of Canada — Service-related scams; Global News — BBB warns of furnace and duct cleaning scams. Price ranges based on published prices from Ottawa duct cleaning companies, reviewed September 2026.
