Dust mites can easily cause allergic reactions in anyone sensitive enough to pollutants. Did you know that they could be lingering in your furnace or air conditioner at any given time, and that you must find ways to keep them out of your HVAC appliances? Before you go ahead and buy the best furnace filters against allergies, though, there are a few things you should consider first. Minimize AllergensGetting rid of those pesky dust mites still hinges on proper home cleaning and maintenance. After all, even the most durable furnace filters from distributors like the Allergy Relief Store could be of little help if you donâ¤™t clear dust from your carpets, drapes, wallpaper, and other areas in your house.