Protect your home
Build a clean room: purifiers, sealing, ventilation, indoor sources and monitoring.
Make one clean room firstThe single most effective thing a household can do is turn one room into a well-filtered refuge, starting where the most sensitive person sleeps.Using an air purifier wellPlacement, fan speed, filter changes and the features to switch off, so the purifier you own delivers what it promises.Sealing gaps (and what never to seal)Does sealing work? Yes. It slows how fast polluted air leaks in, which lets a purifier keep a room much cleaner. Here is where to seal and where not to.Ventilation without letting the smog inHomes still need fresh air for moisture, cooking fumes and carbon dioxide. How to ventilate smartly on polluted days.Stop making pollution indoorsIncense, mosquito coils, cooking smoke and heaters can make indoor air worse than outdoors. These are the free fixes.Measuring the air in your homeAn indoor PM2.5 monitor tells you whether your clean room is really clean. How to place it, record readings and read the trends.