Product Price Filter Type Coverage Area (sq ft) Clean Air Delivery Rate Maximum Particle Size Capture (microns) Noise Level (dB) Energy Consumption (Watts) Filter Replacement Interval
Coway Airmega 100
US
£62.92 3-in-1 (Pre-filter + HEPA + Deodorization) 0.01 microns 12 months

Compact cylindrical purifier with 3-stage filtration (pre-filter, HEPA, deodorization), real-time PM2.5 sensor, and quiet sleep mode. Suited for small to medium rooms and users who want low running costs and year‑long filter life.

Honeywell HPA250B
US
£172.31 Activated carbon pre-filter + True HEPA R filter 0.3 microns and larger HEPA filter: 12 months; Pre-filter: 3 months

Bluetooth-enabled large-room air purifier with activated carbon pre-filter plus True HEPA filtration, AHAM-verified CADR ratings and app control. Suited for allergy sufferers and households needing strong particle and odor removal in rooms up to about 310 sq ft.

Coway Airmega AP-1512HH Mighty
US
£179.80 Pre-Filter, Deodorization (Activated Carbon), HEPA, Bipolar Ionizer 0.3 microns Deodorization Filter 6 months, HEPA Filter 12 months

Compact, award-winning air purifier with multi-stage filtration (pre-filter, activated carbon, True HEPA) and a bipolar ionizer. Suited for bedrooms and medium rooms up to ~361 sq ft where strong particulate removal is needed.

Levoit Core 300S
US
£112.37 3-stage (Pre-filter, True HEPA, Activated carbon) 0.3 microns 6-8 months

The Levoit Core 300S is a compact smart air purifier with 3-stage filtration (pre-filter, True HEPA, activated carbon), a PM2.5 sensor and Wi‑Fi/auto mode. It suits bedrooms or medium rooms up to about 219 sq ft for users who want quiet, energy-efficient smart control.

Winix 5500-2
US
£149.83 Washable pre-filter; Washable AOC carbon pellet filter; True HEPA (H13) 0.003 microns 12 months

The Winix 5500-2 is a 4-stage air purifier with a washable pre-filter, pelleted activated carbon filter and True HEPA (H13) plus PlasmaWave technology. It suits medium to large rooms (about 360 sq ft), offers AHAM-verified high CADR for dust, smoke and pollen, and is aimed at allergy sufferers and homes with pets or smoke concerns.