Derek Cole compares cheap box-store air filters to MERV 8 filters. Cheap ones only catch large debris, while MERV 8 captures smaller particles but can reduce your system's airflow.
We talk about air filters a lot, and this is one of the things I wanted to show you because we talk about it quite a bit. But I'll show you quite a bit about air filters. This right here is probably the cheapest filter you can buy at the big box store. It's not really doing much anything except stopping the big items like sandwich bags and cat toys and anything that comes in contact with it. But it's not really filtering the particles you want to get rid of in your home. This is a MERV 8 filter. A MERV 8 filter is a good middle of the road, not too cheap, not too expensive filter for your home. So this is it does a good job of stopping particles, but it also does a good job of eliminating airflow through the system.
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