Air purifiers are among the most searched home appliances in Pakistan right now, as smog season pushes air quality in Lahore and other Punjab cities to hazardous levels every winter. A good purifier with a genuine HEPA filter traps dust, pollen, smoke particles and allergens, and is now considered essential for bedrooms, kids’ rooms and offices. Prices in Pakistan range from around Rs 15,000 for compact local and Chinese models to over Rs 150,000 for premium brands such as Dyson and Philips, depending on room size (CADR rating), filter type and smart features. When buying, check the HEPA filter rating, the room size the model covers, filter replacement cost and warranty.