# Which whole house air purifier has the largest coverage area? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which whole house air purifier has the largest coverage area?

## Products

### Shark HP300 Air Purifier
```yaml
product: shark-hp300-air-purifier
brand: Shark
price_gbp: 23960.43
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
noise_level: 38.8
filter_types: Debris Defense filter; Pet Particle Barrier filter; Activated Carbon filter; NeverChange True HEPA 14 filter
coverage_area: 1400
energy_consumption: 54
air_changes_per_hour: 1 at 1400 sq ft; 4.8 at 301 sq ft
maximum_particle_size_capture: 0.1 micron
```

- **Price:** £23960.43 [^1]
- **Summary:** The Shark HP300 covers up to 1400 sq ft and uses four filtration layers, including a NeverChange True HEPA 14 filter, debris protection, pet particle filtration, and activated carbon. It suits large homes, open-plan rooms, and households with pets or allergies, with Clean Sense IQ monitoring and odor-neutralizing technology.
- **Ideal For:** This model is a strong fit for the whole-house air purifier with the largest coverage area because it covers up to 1400 sq ft and provides one air change per hour across that space.
- **Additional Sources:** [^2]

### Dayette AP401
```yaml
product: dayette-ap401
brand: Dayette
price_gbp: 73.86
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
noise_level: 22
filter_types: Pre-filter, True HEPA filter, activated carbon filter, net filter
coverage_area: 3000
air_changes_per_hour: 1
maximum_particle_size_capture: 0.3 microns
```

- **Price:** £73.86 [^3]
- **Summary:** The Dayette AP401 is a whole-house air purifier with 3000 sq ft coverage at 1 air change per hour and a four-stage filtration system. It suits large homes and people seeking quiet operation, with sleep-mode noise rated at 22 dB.
- **Ideal For:** This product suits the question because its stated 3000 sq ft coverage area is designed for large spaces, with 1 air change per hour across that area.

### Blueair Blue Max 3350i
```yaml
product: blueair-blue-max-3350i
brand: Blueair
price_gbp: 139.56
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
noise_level: 23-50
filter_types: Particle and carbon
energy_consumption: 32
air_changes_per_hour: 4.8
maximum_particle_size_capture: 0.1 microns
```

- **Price:** £139.56 [^4]
- **Summary:** The Blue Max 3350i is a smart air purifier with HEPASilent dual filtration, particle and carbon filtration, app and Wi-Fi control, automatic fan adjustment, and PM2.5 monitoring. It suits bedrooms, offices, and medium-sized rooms, with low noise of 23-50 dB and energy use of up to 32 watts.
- **Ideal For:** With coverage listed at up to 86 m² and 4.8 air changes per hour, the Blue Max 3350i is suited to medium-sized spaces but is not the strongest choice for the whole-house purifier with the largest coverage area.
- **Additional Sources:** [^5], [^6]

### Eoleaf AltaPur 700
```yaml
product: eoleaf-altapur-700
brand: Eoleaf
price_gbp: 553.23
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
noise_level: 60
filter_types: Pre-filter, antibacterial bamboo fibre filter, medical-grade HEPA H13 filter, activated charcoal filter, photocatalysis, UVC sterilisation, ionisation
coverage_area: 1300
energy_consumption: 56.8
air_changes_per_hour: 3
maximum_particle_size_capture: 0.01 microns
```

- **Price:** £553.23 [^7]
- **Summary:** The AltaPur 700 is a professional air purifier designed for large homes, offices, hotels, reception areas and medical practices. It combines eight-stage filtration, 360-degree air intake, vertical air distribution, automatic mode and smart controls, making it suitable for large spaces and demanding environments.
- **Ideal For:** It suits the search for a whole house air purifier with the largest coverage area because it covers up to 1300 sq ft, delivers up to 670 m3/h of clean air and uses a powerful multi-layer filtration system.
- **Additional Sources:** [^8]

---
## References & Sources
[^1]: Velan Store, accessed 2026-09-13. https://velanstore.com/ta/products/shark-hp300-air-purifier-for-home-1400-sqft-coverage-5-year-neverchange-true-hepa-14-filter-captures-9998-dust-smoke-allergens
[^2]: Infinia Home and Kitchen, accessed 2026-09-13. https://infiniahomeandkitchen.com/products/shark-hp300-air-purifier-1400-sq-ft-coverage-captures-99-98-dust-smoke-allergens
[^3]: Dayette, accessed 2026-09-13. https://www.dayette.com/product-page/ap401-true-hepa-air-purifier-for-large-room-up-to-1720-sqft
[^4]: Allergy Cosmos, accessed 2026-09-13. https://allergycosmos.co.uk/products/blueair-blue-max-3350i
[^5]: Breathing Space, accessed 2026-09-13. https://www.breathingspace.co.uk/products/blueair-blue-max-3350i
[^6]: UK Air Purifiers, accessed 2026-09-13. https://ukairpurifiers.com/blueair-blue-max-3350i-air-purifier/
[^7]: Eoleaf, accessed 2026-09-13. https://eoleaf.com/products/altapur-700-air-purifier
[^8]: Air Purified, accessed 2026-09-13. https://airpurified.co.uk/product/eoleaf-altapur-700-air-purifier/