Cat Allergy Air Purifier UK - Fel d 1 Allergen Removal | HEPA H13

Cat allergy — triggered by the Fel d 1 protein in cat saliva, dander and urine — is one of the most pervasive indoor allergens in Europe. HEPA H13 filtration captures Fel d 1 particles as small as 0.1 µm, with 99.95% efficiency. The Corsi-Rosenthal kit from Clean Air Kits achieves CADR 369–550 m³/h — keeping cat-occupied rooms allergen-free in under 15 minutes. From £144.

At Clean Air Kits, we've developed premium DIY air purifier kits based on the proven Corsi-Rosenthal Box design. Our kits are Energy Star 2026 certified and independently tested to be 2.4x more efficient than commercial alternatives like Dyson.