Most homes do not need duct cleaning on a schedule. Here is when it actually is worth it.
Duct cleaning is one of the most oversold services in home maintenance, and it earns some of the skepticism it gets. Here is a straight read on when it does something and when it doesn't.
After a remodel or new construction, drywall dust and sawdust settle inside duct runs and registers, and clearing it out is worth doing. A rodent problem that got into the ducts, water that reached a run, or debris you can actually see at a register or return grille are the other honest reasons. In all of these, there is something specific in the duct that wasn't there before.
If nothing has happened — no remodel, no pests, no water, no visible debris — and the reason to call is that it's been a few years or a neighbor mentioned it, that is not a strong reason. Ducts in a house with no unusual event tend to accumulate a modest amount of household dust and not much else, and there is no fixed interval at which that dust becomes a problem worth paying to remove.
Cleaning physically removes what is sitting inside the ducts. It does not measurably improve allergies, it does not carry a guaranteed energy-savings number, and it does not disinfect a house. Be wary of the very cheap whole-house cleaning coupon advertised well below what fully accessing a duct system actually costs to do properly — those often turn into an in-home upsell for sanitizing treatments, UV lights or antimicrobial fog once the technician is standing in your house. A contractor willing to look at your registers or ask a few questions before quoting a whole-house price is a better sign than one who quotes blind off a coupon.
Describe the problem and we'll tell you whether it's cleaning, sealing, repair, or not a duct problem at all.
Get Matched With a Duct ContractorA short description is enough — we'll follow up to sort out what it actually needs.