I've been using them for 7 years now and have had no problems with copper plumbing. This was recommended by a water chemist. I get about 2 years off it if 2 people live in this house.
Pentek R30 20BB Pleated Polyester Cartridge
7 Review
Hydronix CB 45 2001 Commercial Industrial Activated π§ Water Filter: The Ultimate Solution for Efficient Water Purification
7 Review
Filter under the sink Aquaphor Crystal A, 1/2" white
51 Review
π§ Pentek 150467 Blue Housing Pressure: Optimal Solution for Filtering Water
10 Review
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 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
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