Real chemistry with configuration-dependent performance and an open by-product question. A load-removing (subtractive) air treatment. Do NOT merge with the air-ozonation row — different substance, different hazard.
Origin & lineage
NASA-derived PCO air-cleaning technology.
Claimed mechanism
Photocatalytic oxidation (UV + catalyst) breaks down airborne pollutants and pathogens.
Plausibility
Plausible chemistry; real but configuration-dependent, with a by-product (e.g. intermediates) question open.
Evidence — grade C/D
Real chemistry, configuration-dependent performance, by-product question open. Do NOT merge with the carried air-ozonation row — different substance, different hazard.
Market
Makers: Various PCO makers. Models: PCO air units. Price: Consumer/commercial.
Kernel — keep vs set aside
Keep — real substrate
Photocatalytic oxidation is real, documented chemistry.
Set aside — claim
Performance is configuration-dependent and the by-product profile is unresolved.
Regulatory status by jurisdiction
Registration or clearance is a market-access fact, never proof of efficacy.