Filter driers are designed to remove foreign materials from refrigeration or air conditioning systems. They are notorious for becoming restricted due to moisture, sludge, dirt, or oil that has entered ...

In last month’s article, “Inside Filter Driers,” which appeared on Page 18 of the Feb. 6 issue of The NEWS, we covered the internal construction, filtering, and drying materials within a refrigerant ...

Best Window AC Units of 2025: See at CNET Below we'll outline when to change your AC filter and how to swap it the right way to guarantee your AC unit runs properly and efficiently.