Aprilaire 1413

I purchased Lennox X6670 filter as OEM for a new High efficiency furnace purchased. A service person who replaced the filter recommended replacement at a high price. Discount furnace had the lowest price and OEM which I wanted to make sure the warranty is not voided. Lennox X6670 filter is exactly the same as I had prior to purchase.The product works well and Discount Furnace Filter company is excellent. I cleared up an account problem in one attempt. I will order from them again.

When it came time to replace the filters in my furnance I became frustrated by the perceived complexity and manual work required to replace the factory filter which required pleat spacers. I did some research on the Internet and came across the Aprilaire 1413 upgrade kit which would make future filter replacements much easier plus providing a higher MERV rating of 13 over the base factory filter. I found this product to be very easily installed and it saved me to be able to replace this myself versus having a furnace repair technician perform the installation. And in the future replacing filters will be very quick and painless.