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Best air purifier for allergies and hay fever (2026)

For pollen and asthma, a genuine HEPA grade matters most, followed by quiet running for the bedroom.

Updated 24 September 2026Prices checked August 2026
Annual ryegrass seed heads against a blue sky
Annual ryegrass, a major source of spring grass pollen in WA. Photo: Harry Rose, CC BY 2.0
  1. Winix Zero+ Pro

    Winix Zero+ Pro

    $429 · H14 · 22 dB on low

    The only H14 filter on our list, quiet enough for a bedroom and big enough for open-plan living.

    ReviewWhere to buy
  2. Levoit Core 400S

    Levoit Core 400S

    $249 · lab-tested 340 m³/h · 24 dB asleep

    Fast and affordable for a living room up to 35 m² in pollen season.

    ReviewWhere to buy
  3. Coway Airmega 150

    Coway Airmega 150

    $169 · H13 · bedrooms

    A stated H13 filter at a low price, for the bedroom where you spend eight hours a night.

    ReviewWhere to buy

What matters for allergies

  • A stated HEPA grade. H13 or H14. “HEPA-type” promises nothing. HEPA explained.
  • The bedroom first. It's where you spend the most time, and pollen settles on bedding.
  • Ioniser off. Ozone irritates the airways, so leave ioniser features switched off if you have asthma.
  • Timing. WA's grass pollen peaks in October and November. Fit a fresh filter in September.

Questions

Will a purifier stop my hay fever?

It cuts the pollen in the room, which helps, especially overnight. It won't help outdoors, so keep your usual treatment and windows shut on windy spring days.

Does it help with dust mites?

Only partly. Mite allergen is heavy and settles into bedding. Washing bedding weekly at 60°C does more. Indoor air guide.