Independently certified: Intertek tested, Energy Star 2026, ECARF allergy certified. Same H13 HEPA filtration as £300+ commercial brands. Free UK shipping. 30-day returns.
Intertek, one of the world's leading quality assurance providers, has independently tested and verified the performance of components used in our DIY air purifier kits.
Energy Star 2026 certified components ensure your DIY air purifier operates with maximum efficiency, saving money and reducing environmental impact.
30-40% lower energy consumption than non-certified alternatives
Estimated annual electricity cost: $15-25 (running 24/7)
Reduced carbon footprint - eco-friendly air purification
Qualifies for energy efficiency rebates in many regions
Extended component lifespan due to efficient operation
Build a Corsi-Rosenthal Box from £144 — 30-min assembly, free UK shipping (2-3 days). HEPA H13 removes 99.97% of viruses, pollen & PM2.5. Energy Star 2026 certified. Trusted by NHS, schools & offices.
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