These are the manufacturer recommended filters. So I bought her. They work great and I change them every six months. I've found they work better if you lift the registers (metal grilles) in your house when you vacuum and use the vacuum attachment a few times a year. It's amazing how much dust, dog hair and just plain accidents get into these air ducts. I even grabbed the vacuum extension hose I bought for my dryer and used it to get further into the air ducts. I filled the vacuum cleaner. While the filters work great on their own, if you vacuum your canals from time to time, they really extend the lifespan.
NANPU 1 FRL Air Filter Regulator Lubricator Combo With 0-150 Psi Gauge, 5 Micron Brass Element, Poly Bowl & Semi-Auto Drain - Metal Bracket Included
20 Review
NANPU 3/8" NPT Compressed Air Filter Regulator Combo Piggyback, 5 Micron Brass Element, Poly Bowl, Semi-Auto Drain, Metal Bracket, 0-150 Psi Gauge
26 Review
Filter under the sink Aquaphor Favorit ECO silver
20 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