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HVAC

Duct cleaning near you

Cleaning and sealing supply and return ductwork.

Prepared by the TenBestFind Editorial TeamUpdated September 2026

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  • Part of

    HVAC

  • Companies offer it

    109

  • Cities covered

    8

  • Last checked

    September 2026

The work

What duct cleaning actually involves

What it does, and what it is often sold as doing

Duct cleaning is a physical job: a vacuum under negative pressure on the system while brushes or compressed air agitate the inside of the ducts, plus cleaning the coil, the blower and the return. Done properly it takes hours and the equipment is large.

It is genuinely worth doing in specific situations: after construction or renovation work, if there is visible mould in the ducts, if there has been vermin, or if the system was run without filters. As routine maintenance on a normal house, the evidence for a health benefit is thin.

Ask to see inside the ducts before and after, with a camera or a mirror. A firm that does this properly will be happy to show you; it is the most persuasive thing they have.

The offer

The whole-house special is an advertisement, not a price

This is the corner of home services with the most aggressive discounting, and a very low headline figure is almost always the opening of a different conversation.

The pattern is familiar: a small advertised price, a technician on site who finds mould, contamination or a need for sanitising treatment, and a total many times the number that got them through the door.

A straightforward firm will quote by the number of vents and returns, say plainly what is included, and put the price in writing before arriving.

Failure points

Two things that go wrong

All hvac companies research →

  1. Sanitising sprays and sealants

    Ask: “What product is this, is it approved for use inside ducts, and what does it do that cleaning does not?”

    Chemical treatments and duct sealants sprayed into the system are the most common upsell and the least well supported. Some are not approved for use inside ducts at all. Find out exactly what product is proposed and why, before agreeing to anything applied into the air you breathe.

  2. Cleaning without touching the coil or blower

    Ask: “Does this include the coil and the blower wheel, or only the ducts?”

    Much of what accumulates in a forced air system is on the evaporator coil and the blower wheel rather than in the ducts. A cheap clean that runs a hose down the vents and leaves both untouched has skipped the part that actually affects airflow.

Before you book duct cleaning

How we rank →

Six checks, in the order they save you the most. None of them takes longer than a phone call, and the first one is the reason two quotes for the same job can be a thousand apart.

  1. In-house or subcontracted

    Ask whether the crew doing this specific work is on their payroll. Plenty of companies list a service and hand it straight to somebody else, which is not wrong, but it changes who is answerable when something goes back.

  2. The licence for the parent trade

    Look the number up with the authority that issues it rather than reading the certificate they send you. What a licence covers, and whether one is needed at all, changes by state and province.

  3. Insurance, confirmed with the insurer

    A current certificate sent to you by the insurer, not a photocopy from the company. Ask for liability and, where crews are on site, workers' compensation.

  4. What the quote leaves out

    Removal, disposal, subfloor or substrate work, permits and making good afterwards are where two quotes on the same job separate. Ask for the exclusions in writing next to the inclusions.

  5. Two warranties, not one

    The manufacturer covers the material and the company covers the workmanship. Get the second in writing, with its length, and ask whether it transfers if you sell.

  6. How a change is priced

    Agree before the deposit how anything found on the way is priced and approved. The moment to settle that is while you are still choosing between companies, not on the day somebody lifts a floorboard.

Where we cover it

HVAC shortlists by city

Every shortlist →

A company offering duct cleaning appears in the published list for its own market. Each one names the editor who built it and the date they last checked it.

On the lists

Companies that list duct cleaning

Drawn from the profiles where this service is recorded, not from what a company advertises.

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HVAC guides

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Common questions about duct cleaning

Ask us something else →

  • Who handles duct cleaning?

    Duct cleaning is handled by HVAC companies. Not every company in the trade takes this work on, so each ranking lists the services a company genuinely performs rather than everything it advertises.

  • What should I ask before booking duct cleaning?

    Ask what the quote includes and excludes, who is doing the work, whether a permit is needed and who is pulling it, and what the workmanship warranty covers. Get the answers in writing before anyone starts.

  • How do I compare quotes for this?

    Put them on one sheet line by line. Differences in price almost always turn out to be differences in scope, material grade or warranty length rather than margin.

  • Is duct cleaning priced separately from the rest of the job?

    Usually it is a line inside a larger quote rather than its own invoice, which is exactly why the exclusions matter. Ask for it itemised so you can compare that line between companies instead of comparing two totals.

For hvac

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