They do exactly what they want, they filter dust before it gets into your HVAC system. I also like the fact that these are not very thick (very expensive) filters which can make any system work harder by forcing air through the unit. In the summer I change the filters monthly since my air conditioning runs every day. All other seasons will be changed as needed.
NANPU Air Drying System With Double Filters And Pressure Regulator Combo For Clean And Controlled Air Supply
18 Review
π§ NANPU 1/2" NPT Compressed Air Filter Regulator Combo Piggyback with Auto Drain, 5 Micron Brass Element, Poly Bowl, Metal Bracket, and 0-150 psi Gauge
18 Review
Filter under the sink Aquaphor Favorit ECO silver
20 Review
NANPU Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
21 Review