We specialize in brand new, high-quality Aprilaire products! As a "brick and mortar" Aprilaire dealer for over 25 years, we sell top-quality Aprilaire air filters, Aprilaire humidifiers, Space-Gard filters, and other OEM Aprilaire products that we have installed and tested in the field. That means you can be confident that you won't make a mistake when you buy an Aprilaire or Space-Gard filter or humidifier from DiscountFurnaceFilter.com. A few of our most popular items are the Aprilaire 700 humidifier, Aprilaire 600 humidifier, Space-Gard #201 filter and Space-Gard #401 media filters that fit the Space-Gard media filter cabinets. We also carry the Aprilaire 400 humidifier and the Aprilaire 500 humidifier, Aprilaire #10 water panel, and Aprilaire #35 water panel. Whether you need a Aprilaire bypass humidifier or Aprilaire / Space-Gard filter to make your entire home more comfortable, you came to the right place. You may browse our selection of Aprilaire and Space-Gard products and simply click "Add to Cart" once you identify the item you want to purchase!