I have 4 louvered screens. Two filters in a common room will get dirty faster. So I install 2 new filters in my bedroom hallway every two months. Then I put the lightly used filters back in the living room. So I only have to use two filters every two months instead of four. I also buy them from Costco when they go on sale a few times a year for $30 for a 3-pack.
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
NANPU Air Drying System With Double Filters And Pressure Regulator Combo For Clean And Controlled Air Supply
18 Review
Filter under the sink Aquaphor Favorit ECO silver
20 Review
NANPU 1/2" NPT Air Drying System - 5 Micron Particulate Filter, 0.01 Micron Coalescing Filter, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl W/Metal Gauge
23 Review