Air Purifiers for AllergiesHay Fever, Pets, Dust Mites
Over 13 million people in the UK suffer from allergies. Learn how MERV and HEPA air purifiers remove 85-99% of allergens for effective symptom relief.
UK Allergy Statistics
Allergen Particle Sizes
Understanding particle sizes helps you choose the right filter. All common allergens are captured by MERV 13+:
| Allergen | Size (microns) | MERV 13 | MERV 16/HEPA |
|---|---|---|---|
| Pollen (grass, tree) | 10-100 Ξm | 85-90% | 99%+ |
| Dust mites | 10-40 Ξm | 85-90% | 99%+ |
| Pet dander | 2-10 Ξm | 80-85% | 95%+ |
| Mould spores | 3-30 Ξm | 85-90% | 99%+ |
| Cat allergen (Fel d 1) | 1-10 Ξm | 75-85% | 95%+ |
UK Pollen Calendar 2026
ðģ Tree Pollen
March - May
Birch (April peak), Oak, Ash, Plane trees. Affects 25% of hay fever sufferers.
ðū Grass Pollen
May - July (peak)
Affects 95% of hay fever sufferers. Late May to early July is worst. Run purifiers 24/7.
ðŋ Weed Pollen
June - September
Nettle, Dock, Mugwort. Overlaps with grass season. Extended relief needed.
Daily Pollen Tips
- âĒ Pollen highest: 6-9am and 5-7pm
- âĒ Keep windows closed during peak hours
- âĒ Run air purifier continuously during season
- âĒ Shower and change clothes after outdoor exposure
- âĒ Check Met Office pollen forecast daily
Pet Allergy Solutions
ðą Cat Allergies
Cat allergen (Fel d 1) is particularly sticky and can remain airborne for hours. It's found on skin, saliva, and urine - not just fur.
- â Use MERV 16 or HEPA for severe allergies
- â Place purifier in bedroom (pet-free zone)
- â Run 24/7 for cumulative benefit
- â HEPA vacuum weekly
ð Dog Allergies
Dog allergens (Can f 1) are similar to cats but slightly larger particles. Regular grooming helps reduce airborne levels.
- â MERV 13 usually sufficient
- â Groom dog outdoors weekly
- â Wash dog bedding frequently
- â Keep dog out of bedroom
Frequently Asked Questions
What is the best air purifier for allergies?
MERV 13-16 or HEPA H13 filters are best for allergies. They capture 85-99.97% of allergens including pollen, dust mites, pet dander, and mould spores. For hay fever specifically, MERV 13 is sufficient as pollen particles are 10-100 microns.
Do air purifiers help with hay fever?
Yes, significantly. MERV 13 filters capture 85-90% of pollen particles (10-100 microns). Running a purifier with windows closed during high pollen days (typically 6am-9am and 5pm-7pm) can reduce symptoms dramatically.
Can air purifiers remove pet allergens?
Yes. Pet dander particles are 2-10 microns and are efficiently captured by MERV 13+ filters. For severe pet allergies, MERV 16 or HEPA provides 95%+ capture. Keep purifier in bedroom where pets sleep.
How long does it take for an air purifier to help allergies?
With proper sizing (5-6 ACH), you should notice improvement within 30-60 minutes of running. For best results, run continuously and you'll see cumulative benefits over days as settled allergens are removed.
When is UK pollen season?
Tree pollen: March-May. Grass pollen (affects 95% of hay fever sufferers): May-July. Weed pollen: June-September. Peak grass pollen is typically late May to early July.
Calculate Your Needs
Find the right purifier size for your bedroom and living areas.
ACH Calculator âBest for Allergies
MERV 13 Luggable
Perfect for hay fever, quiet bedroom use
From ÂĢ149
MERV 16 for Pets
Higher capture for cat/dog allergens
From ÂĢ169