About PureAirPick

Primary data source · AHAM Verifide

The single most important number on every product page is the AHAM-Verifide CADR (Clean Air Delivery Rate) figure for smoke, dust, and pollen. CADR is measured independently by the Association of Home Appliance Manufacturers under a standardised lab protocol. It is the only widely-published, third-party-verified performance figure for a residential air purifier. If a model has not been tested by AHAM, we will say so and we will not rank it against AHAM-verified models on equal footing.

Secondary data sources

• Manufacturer specification sheets and product pages — for dimensions, weight, noise levels, filter life, smart-features, and warranty terms.
• Active Amazon product listings — for current pricing, photography, and the Amazon-side feature claims that buyers will see at the point of purchase.
• RTINGS.com test reports where they exist for the model in question — primarily as a sanity check on noise and filtration claims.

What we do

• Aggregate verified specifications from the sources above into a single per-product data record.
• Normalise units (square feet, decibels, watts, USD) so spec-to-spec comparisons across brands are like-for-like.
• Rank category pages using a sort key that matches buyer intent — for example, the "small rooms" category sorts by coverage ascending so the most appropriately-sized unit appears first; "quiet" sorts by maximum decibels ascending; "large rooms" sorts by CADR smoke descending. The sort logic is in src/lib/data.js in our open repository.
• Mark fields whose source we cannot independently confirm (for example, retailer-published filter replacement costs that change frequently) with an "(estimate)" qualifier next to the value, so the reader can tell at a glance which numbers we have verified and which are best-effort.
• Re-check pricing and availability monthly. Each review page shows a visible "Last updated" date.

What we deliberately do not do

• We do not run our own lab tests. We have neither the equipment nor the ISO/AHAM accreditation to do so credibly. Any number on this site that is presented without a third-party citation is either a manufacturer claim or one of our own labelled estimates — never a measurement we performed.
• We do not accept paid placement, sponsored ranking slots, or "featured" boosts of any kind. Brands cannot pay for a higher position on a category page; the sort key is fixed and category-aware.
• We do not write reviews on commission. Affiliate links on this site earn us a percentage of qualifying purchases, but those links sit beside the data — they do not influence the data.
• We do not invent ratings. You will not see five-star scores or aggregate review badges fabricated from nothing — and accordingly the structured data on every review page deliberately omits any aggregateRating block.

PureAirPick participates in the Amazon Associates program (Associate ID pureairpick20-20). We earn a commission when a reader purchases a product through a link on this site, at no extra cost to them.

The full text of our affiliate disclosure lives at /affiliate-disclosure/. The short version: affiliate revenue funds the site, but it does not change which products are ranked above others.

Updates and versioning

Each product page carries a "Last updated" date drawn directly from the product's data record. When we update a price, swap a primary affiliate link, or revise a verdict, that date moves forward.

Errors and corrections

If you find a wrong number on this site — a CADR value that does not match the AHAM directory, a coverage claim that contradicts the manufacturer's current spec sheet, an affiliate link that does not resolve to the right product — please open an issue on our public repository and we will fix it within seven days. Corrections of substance will be flagged in the page's "Last updated" note.

Scope

We cover residential, plug-in air purifiers in the $50–$1,500 price band, sold in the US market. We do not cover whole-house HVAC filtration, industrial-scale units, automotive purifiers, or products without a published CADR or equivalent third-party performance measurement.