Hayfever is miserable because pollen gets everywhere — including indoors, on your clothes and through open windows. A purifier turns your bedroom and living room into low-pollen zones, which is where the relief comes from.
How an air purifier helps with hayfever
- Pollen capture: MERV-13 easily traps pollen grains (large as airborne particles go), and high airflow clears them fast.
- London plane trees: the capital's most common street tree sheds irritant pollen and hairs late spring — a purifier helps where you can't avoid them.
- Bedroom first: run it overnight so you sleep and wake in clean air.
Ready to clean up your London air?
Luggable MERV-13 kits deliver up to 681 m³/h CADR — built on the Corsi-Rosenthal principle, from £229. Ships from Oxford in 2–3 days.
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369 m³/h CADR · bedrooms & medium rooms (~450 sq ft) · MERV-13
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681 m³/h CADR · large & open-plan (600–750 sq ft) · MERV-13
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View →Cut your indoor pollen load
- Keep windows shut on high-pollen mornings; check the Met Office pollen forecast.
- Shower and change after being outdoors to avoid carrying pollen to bed.
- Run the purifier in the bedroom overnight through the season.
Frequently asked questions
Does an air purifier really help hayfever?
Yes — by removing pollen from indoor air it reduces your exposure at home, especially overnight in the bedroom, which is where most people get relief.
When should I start running it?
From the start of your trigger season — tree pollen (e.g. birch) in spring, grass pollen in early summer. Running it before symptoms peak works best.