# What are the best air purifiers for allergy sufferers? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the best air purifiers for allergy sufferers?

## Products

### Austin Air HealthMate HM400
```yaml
product: austin-air-healthmate-hm400
brand: Austin Air
price_gbp: 522.59
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
cadr: AHAM CADR not tested; PM/CFM data reported: Top speed PM1 CADR 156 cfm; Sub-45 dBA PM1 CADR 77 cfm; AHAM PM2.5 CADR 154 cfm
filter_types: Permafilt pre-filter; Cotton/poly pre-filter; True HEPA; Activated carbon and zeolite (15 lb)
coverage_area: 1500 (1 ACH); 750 (2 ACH); 562.5 (3 ACH); 375 (4 ACH); 281.25 (6 ACH); 187.5 (8 ACH)
energy_consumption: Speed 1: 61.1; Speed 2: 85.05; Speed 3: 147.6
maximum_noise_level: 50-66 dBA (site reports)
air_changes_per_hour: Examples listed per room size: 1-8 ACH per sizes above
filter_replacement_interval: 5 years
```

- **Price:** £522.59 [^1]
- **Summary:** The Austin Air HealthMate HM400 is a heavy-duty 4-stage air purifier combining a True HEPA filter with a 15 lb activated carbon/zeolite gas filter and 360° intake for broad room coverage and VOC/odor removal. It's designed for continuous use with long-lived filters (up to 5 years), multiple fan speeds, and suitability for large rooms up to 1500 sq. ft. while producing moderate to high noise at top speed.
- **Ideal For:** Ideal for allergy sufferers because its True HEPA (99.97% at 0.3 microns) plus extensive pre-filters and 15 lb carbon/zeolite remove allergens and associated odors/VOCs, and it covers rooms up to 562.5 sq ft at 3 ACH.

### Winix Winix 5510
```yaml
product: winix-winix-5510
brand: Winix
price_gbp: 134.57
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
cadr: AHAM PM2.5 CADR: 252 (dust)
filter_types: Pre-filter, True HEPA, Activated carbon (pelleted)
coverage_area: 372
energy_consumption: 53.84
maximum_noise_level: 67.2
air_changes_per_hour: 5
filter_replacement_interval: 12 months
```

- **Price:** £134.57 [^2]
- **Summary:** The Winix 5510 is a large-room air purifier with True HEPA filtration, pelleted activated carbon for high deodorization, PlasmaWave boost, Wi‑Fi app control, and Energy Star certification. It delivers strong CADR performance for dust and particulate removal and includes a filter-life indicator and auto mode, suited for living rooms and bedrooms.
- **Ideal For:** Ideal for allergy sufferers because its True HEPA filter plus a CADR of 252 (PM2.5) and 5 air changes per hour for ~372 sq ft provide effective removal of dust and pollen.

---
## References & Sources
[^1]: Austin Air (manufacturer shop), accessed 2026-06-12. https://austinair.com/collections/healthmate/products/healthmate-hm400
[^2]: Winix USA (manufacturer store), accessed 2026-06-12. https://www.winixamerica.com/product/5510/