You won't find these filters in any major store, so don't worry. They're expensive and it's annoying that you technically have to replace them four times a year, but bite the bullet and do it when you see savings on your energy bill because your heating/cooling unit doesn't have to work as hard . . I don't check the air quality in my home regularly, so I can't tell you I'm breathing fewer toxins than I have in the last month, but at least I feel like it.
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
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 DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
20 Review
Filter under the sink Aquaphor Favorit ECO silver
20 Review