# AirDoctor AD3500

> HEPA filtration for rooms up to 638 sq ft. No ionizer, no ozone emission. Activated carbon layer captures VOCs and formaldehyde alongside particles.

- Brand: [AirDoctor](https://nontoxicnook.com/brands/airdoctor)
- Price tier: $$$
- Canonical: https://nontoxicnook.com/products/airdoctor-ad3500

## Why we chose it

AirDoctor omits the ionizer found in most residential HEPA units. The UltraHEPA filter is independently tested to 0.003 micron, finer than the standard 0.3-micron spec, per brand lab data. An activated carbon layer captures VOCs alongside particles. Covers 638 sq ft at 5 ACH.

## Specs

- source:materials: https://airdoctor.com/products/airdoctor-3500
- image:source-url: https://airdoctor.com/products/airdoctor-3500
- image:credit: AirDoctor, used with permission
- filter-type: UltraHEPA (tested to 0.003 micron) + activated carbon
- coverage: 638 sq ft (5 ACH)
- ionizer: none

## Where to buy

- [Amazon](https://www.amazon.com/dp/B0CPP1DSWD)
- [AirDoctor](https://airdoctor.com/products/airdoctor-3500)

Prices are deliberately omitted from this mirror — they go stale. Current prices and stock: https://nontoxicnook.com/products/airdoctor-ad3500

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Nontoxic Nook lists only products that cleared the published criteria at https://nontoxicnook.com/our-promise. Affiliate disclosure: https://nontoxicnook.com/affiliate-disclosure.