Clean Air Data & Blog

Hold on! Replacement filters cost more than buying a new air purifier?

Ever since Smart Air founder Thomas made his first DIY purifier, Smart Air has been telling the world that purifiers are needlessly overpriced. And ridiculously expensive replacement HEPA and carbon filters are one reason why. HEPA filters were invented over 70 years ago by the US government. There’s no patent, nothing fancy – they’re just […]

Read More

PM10 vs PM2.5 – The Difference in Particle Air Pollution

Does size matter? The difference between PM10 and P 2.5 is size. But let me back up. “PM” refers to particulate matter—particles in the air. Those particles are things like organic dust, airborne bacteria, construction dust, and coal particles from power plants (for example, check out this study from researchers in Shanghai who analyzed what […]

Read More