McKinney What does the EPA actually say about duct cleaning?
A lot of homeowners assume ductwork needs cleaning every few years, like changing a filter on a schedule. The EPA doesn't recommend that. Its published guidance is that duct cleaning should be done as needed, not on a routine basis, and it lists specific situations that justify it. The agency also states plainly: "duct cleaning has never been shown to actually prevent health problems." We're not making a health claim here either way — we're just passing along what the EPA itself says, because it shapes how you should think about whether your McKinney house actually needs this service right now.
The three situations the EPA points to
Instead of a calendar-based schedule, the EPA lists conditions that make cleaning worth considering. Walk through these before you book anything:
- Substantial visible mold growth inside hard-surface ducts (sheet metal, for example) or on other HVAC components. Key word: visible and substantial — a faint discoloration isn't the same thing, and a contractor should be able to show you what they're seeing, not just tell you.
- Ducts infested with vermin — rodents or insects actually living in the system, not just evidence that something passed through once.
- Ducts clogged with excessive dust and debris, especially if you can see particles being released from the supply registers when the system runs.
If none of these describe your situation, routine cleaning isn't something the EPA is telling you to do. If one of them does, it's worth having a local pro take a look — our air duct cleaning page covers what an inspection typically involves, and our pest-contaminated ducts page goes into more detail on the rodent and insect scenario specifically, which comes up more than people expect in homes backing up to greenbelts or older neighborhoods near Highway 5.
Does a newer McKinney house still need this?
McKinney's housing stock skews new — the median home here was built around 2007, and roughly 73 percent of units went up in 2000 or later, with a big share from the 2010s alone. For a lot of these houses, none of the three EPA triggers apply yet. If your house is a few years old with no visible mold, no pest activity, and no dust blowing out of the registers, you're probably in the "not yet" category, which is exactly the framing we use for newer subdivisions like Tucker Hill. One thing worth checking on a newer build: builders sometimes leave construction dust or drywall debris sitting right at the register boots. If you see that, ask the contractor to show it to you before any work starts — it's a reasonable ask, and a legitimate contractor won't mind.
Don't forget the dryer vent — different rules apply
The EPA's "as needed" guidance is about air ducts specifically. Dryer vents are a separate system with their own risk profile, and neglect there is a documented fire factor, not just an airflow nuisance. A U.S. Fire Administration report (Topical Fire Report, Vol. 13, Issue 7, August 2012, covering 2008–2010 data) estimated about 2,900 residential clothes dryer fires a year nationally, with 5 deaths, 100 injuries, and $35 million in loss — and failure to clean was the leading cause, cited in 34 percent of cases. That's a different kind of trigger than mold or dust in your air ducts, and it argues for checking dryer vents on their own timeline rather than waiting for a visible problem.
Who's allowed to do the work, and what it costs
Under the Texas rule (16 TAC 75.100), a contractor can clean your duct system without holding a Chapter 1302 HVAC license as long as the work is limited to the air distribution system — no cutting into ducts or plenums, no electrical work, and the only disassembly is opening or removing grilles and registers. If mold remediation is actually needed beyond cleaning, that crosses into biomedical remediation work, which does require a licensed contractor. On cost: the EPA cites a national range of roughly $450 to $1,000 per heating and cooling system, while a HomeGuide page for the McKinney area lists $300 to $700 for an average home and up to $1,000 for larger homes with more contamination. These are published national and regional ranges, not a McKinney-specific survey, so treat them as a starting point for budgeting rather than a quote.
If you're weighing whether your situation matches one of the EPA's triggers, a local pro can look at your actual ducts and registers and tell you — straightforwardly — whether cleaning makes sense now or can wait.
The takeaway: the EPA's guidance is to clean ducts when there's visible mold, vermin, or heavy dust — not on a schedule — so the real question for your McKinney home is which, if any, of those three conditions you can actually see.