Duct Cleaning near you

Before agreeing to a cleaning, look for evidence rather than a sales pitch. Pull a supply register and a return grille, shine a light inside and take a photograph. Dust film on the first few feet of duct is normal in every occupied house and is not a reason to clean the system.

Companies often sell all of these under one banner, but they are separate systems with separate risks, and a quote should say which one is being cleaned. Confusing them is how a homeowner ends up paying for the heating ducts while the genuinely hazardous duct in the house goes untouched.

The upsell at the end of a duct cleaning is usually a chemical: a sanitizer, a fogger, an antimicrobial mist, or a sealant sprayed inside the ducts to lock contaminants down. Both deserve hard questions, because EPA's published guidance is notably unenthusiastic about each.

On biocides, EPA reports that no products are currently registered by EPA as biocides for use on fiberglass duct board or fiberglass lined ducts, and that little research has been conducted to demonstrate the effectiveness of most biocides. Any product used should be applied only to bare sheet metal ducts, and only after the surfaces have actually been cleaned. On encapsulants, EPA states that most organizations concerned with duct cleaning, EPA included, do not currently recommend the routine use of sealants to encapsulate contaminants in any type of duct.

There is also a safety check that should happen before anyone starts. EPA advises that a service provider inspect the system before cleaning to be sure there are no asbestos-containing materials in the heating and cooling system, such as insulation or register boots. Materials suspected of containing asbestos are not a duct cleaner's work, and disturbing them is the outcome you are trying to avoid.

Homeowners often call for duct cleaning when the real complaint is comfort or cost: a room that never warms up, a stuffy bedroom, a summer bill that keeps climbing. Cleaning addresses none of that. Sealing does. ENERGY STAR reports that about 20 to 30 percent of the air that moves through the duct system is lost due to leaks, holes, and poorly connected ducts, and that sealing and insulating ducts can improve the efficiency of a heating and cooling system by as much as 20 percent.

If your goal is a more comfortable house and a smaller bill, ask for a duct assessment and sealing quote instead. If your goal is answering a genuine contamination problem that meets EPA's test, ask for cleaning. They are different services, and a contractor who insists the first one delivers the second is worth declining.

Almost everything that makes ducts dirty is preventable, and prevention is cheaper and better evidenced than cleaning. Filtration does most of the work: ENERGY STAR advises inspecting, cleaning or changing air filters once a month in a central air conditioner, furnace or heat pump, and a filter that is seated properly in its rack keeps dust out of the blower and the duct interior instead of letting it bypass around the edges.

Moisture is the other half. Mold in a duct needs water, so the fix is the leak, the humidity or the condensation rather than the duct itself. EPA's moisture guidance is to keep indoor humidity below 60 percent, and ideally between 30 and 50 percent, and to vent appliances that produce moisture, such as clothes dryers and stoves, to the outside where possible.

Construction is the third. EPA recommends covering duct openings during all phases of construction to reduce the likelihood of contaminating the ducts, which is worth writing into the contract for any renovation that leaves registers open while drywall is being sanded.

There is no national duct cleaning or HVAC license in the United States, and requirements differ sharply between states and sometimes between cities. In California, the Contractors State License Board issues the C-20 Warm-Air Heating, Ventilating and Air-Conditioning classification, which covers warm-air heating systems, ventilating systems and air-conditioning systems along with the ducts, registers, flues, humidity and thermostatic controls and air filters connected to them. In Texas, the Department of Licensing and Regulation requires contractors who install, repair or maintain air conditioning, refrigeration or heating systems to hold a TDLR license, and requires ACR companies to employ a licensed ACR contractor at each permanent location. Check your own state board, and your city, before assuming either way.

LokalMatch is where the matching happens rather than the work. You describe the duct problem once, including what you actually saw inside the ducts, and local pros who handle that work get in touch with you directly. Those pros pay for the requests they receive. LokalMatch does not perform duct cleaning, does not set prices, and does not vet, rank or recommend any company, so the questions in this guide are yours to ask.