🌬️ Nordic Pure 20X30X1 Pleated Furnace Air Filter Review

Good filters. I was concerned about keeping the "permanent" filters clean. I change them every three months. They are obviously doing their job and the air conditioning doesn't sound like it's polluting the air. And they come in a sturdy storage box. Clean until you use them.

This is my second pack of (6) filters. I change filters every two months. I have two return lines, I change both at the same time. These filters have the same filter numbers as the expensive ones. It will take some time to find the equivalence tables. I put a filter change every month in the same category as an oil change every 3,000 miles. delivered back to your doorstep.

Before I bought this package, I searched the internet for the meaning of "MERV" and wanted to find something special for my family's needs without spending a fortune. We have small critters and tons of dust at home, living in the desert, we have to constantly change filters and dust from every surface of our house. They work well for what they are and last surprisingly longer than big store bought brands. About once a month I would substitute a similar brand for twenty bucks. In the summer…