
I have installed about 8 of these systems and to be honest I am very disappointed with the variety of hot tubs. The first set of filters was 48ppm which is fine but after a short time it wears out and there are only two people in my house - my wife and I. never got better than 177, the next pack never got better than 238 PPM. I am everything. I followed the instructions carefully but it made no difference. I bought Whirlpool brand filters. This system just doesn't work.

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

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

NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
20 Review