The original 'pur' filter flashed the green light when it was cleaning the water. When it stopped working properly, it flashed amber. This new Glacier Fresh filter does not flash green. It blinks yellow. So I'll only know if it doesn't work out in terms of taste. It can happen so gradually that I don't notice it unless it's horrible.
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
NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
20 Review
NANPU Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
21 Review
Filter under the sink Aquaphor Favorit ECO silver
20 Review