Does Air Duct Cleaning Actually Improve Indoor Air Quality?

The EPA's published guidance is plain: duct cleaning "has never been shown to actually prevent health problems," and it suggests considering a cleaning when there's a specific reason — substantial visible mold, vermin, or ducts clogged with dust and debris that is actually released from your supply registers. We agree with that standard, and we don't make health claims. What we can do is show you what changed: before-and-after photos alone aren't proof, so we measure.

What the before-and-after air test measures

• Total airborne particulate count, before and after
• Allergen presence (dust mite, pet dander, cockroach proteins) — results vary by home
• Mold spore count by genus, before and after

What duct cleaning does NOT fix

• Active mold growth inside the home outside the duct system (that's remediation, not cleaning)
• VOC sources (off-gassing furniture, cleaning chemicals)
• Outdoor pollen entering through windows/doors
• A chronically dirty filter that wasn't replaced

Why we ship a 3rd-party IAQ Lab Report with every job

Before we touch anything, we collect a sealed indoor air sample. After the job, we collect another. Both samples are shipped to a Maryland-based independent IAQ lab. Within five business days you receive a branded PDF showing particulate, allergen, and mold spore counts side-by-side, plus a plain-English interpretation.

The lab is independent of us. They have no incentive to flatter our work. That's the point — if a cleaning didn't move the numbers, the report will say so. We'd rather have that conversation with you than rely on "feels cleaner."