India, Dec. 19 -- An air purifier with heater is a two in one device for winter homes. It pulls in indoor air, runs it through filters (usually a HEPA layer for fine dust and allergens, sometimes carbon for smells), then sends cleaner air back out. The extra feature is heating, so you get warmth without ignoring indoor air quality.

This matters in winter because windows stay shut, heaters run longer, and indoor air turns stale quickly. If your room feels warm but you still wake up with a blocked nose, dry throat, or that heavy air feeling, a combo unit can help. It is also a practical time to consider one because harsher days are close and you will use both functions daily.

Cold evenings feel easier when one unit handles air and heat. D...