Water Filtration & RO spec comparisons
Cross-brand cuts computed from the library — the spreadsheet work a buyer would otherwise do by hand.
Flow Rate Gpm — highest
| Brand | Model | flow rate gpm | Price |
|---|---|---|---|
| iSpring | iSpring WCF200K Elite Series Whole House Central Water Filtration System with Automatic Control Head, Reduces Chlorine, Chloramine, PFAS, Lead | 26 | $2,939 |
| iSpring | iSpring Elite Series Whole House Iron, Manganese, and Hydrogen Sulfide Reducing Water Filtration System | 26 | $3,494 |
| iSpring | iSpring Whole House Water Filter System, Reduces PFAS, Chlorine, Chloramine, Lead, Water Filter Lasts up to 5 Years, Model: WF1054 | 26 | $1,418 |
| Waterdrop | Reusable Whole House Spin Down Sediment Water Filter 50 Micron | 20 | $70 |
| iSpring | iSpring WGB31BC-KS Heavy Metals Whole House Water Filter System, Clear Housing for Easy Inspection, Reduces Lead, Mercury, Chlorine, Sediments, H2S, Taste, Odor, 10”x 4.5" Filters, 1" Inlet/Outlet | 15 | $320 |
| iSpring | iSpring WGB31BCM Iron Manganese Whole House Water Filter System, Clear Housing for Easy Inspection, Also Reduces Chlorine, Sediments, Taste, Odor, 10”x 4.5" Filters, 1" Inlet/Outlet | 15 | $316 |
| iSpring | iSpring WGB31BC Whole House Water Filter System, Clear Housing for Easy Inspection, Reduces up to 99% Chlorine, Sediments, Taste, Odor, 10”x 4.5" Filters, 1" Inlet/Outlet | 15 | $295 |
| iSpring | iSpring WHO32B-KDS Whole House Water Filter System, Horizontal Housings & Drain Valve for Spill-Free Filter Changes, Reduces Chlorine, Heavy Metals, Scale, & Odor, 20" x 4.5" Universal Cartridges, Freestanding Metal Frame | 15 | $800 |
| iSpring | iSpring WHO32B-MKS Iron, Manganese, H2S Whole House Water Filter System, Horizontal Housings & Drain Valve for Spill-Free Filter Changes, Also Removes Chlorine, Sediments & Heavy Metals, Freestanding Metal Frame | 15 | $730 |
| iSpring | iSpring WHO32B-PFKDS Ultimate PFAS Removal Whole House Water Filter System, Horizontal Housings & Drain Valve for Spill-Free Filter Changes, Removes PFOA, PFOS, Chlorine, Heavy Metals, Scale & Corrosion, Freestanding Metal Frame | 15 | $1,000 |
Pressure Psi — highest
| Brand | Model | pressure psi | Price |
|---|---|---|---|
| Waterdrop | Waterdrop 3-Stage Whole House Water Filter System with Carbon Filter & Sediment Filter | 300 | $370 |
| Waterdrop | Waterdrop 2-Stage Whole House Water Filter System Reduce Iron&Manganese | 300 | $200 |
| Waterdrop | Waterdrop WHF21-PG 5 Micron 2-Stage Whole House Water Filtration System | 300 | $166 |
| Waterdrop | Undersink Inline Water Filter | Direct Connect to Refrigerators and Ice Makers | 125 | $60 |
| Express Water | tankRO– RO Water Filtration System Expansion Tank – 4 Gallon Water Tank - Reverse Osmosis Tank – Compact Reverse Osmosis Water Storage Pressure Tank with Free 1/4" Tank Ball Valve - RO132-TNK | 100 | $40 |
| Waterdrop | Garden Hose Filter with Flexible Hose Protector | 100 | $26 |
| Waterdrop | 5+1 Stage Stainless Steel Direct Connect Under Sink Water Filter AS13 | 100 | $79 |
| Waterdrop | Stainless Steel Under Sink Water Filter | Direct Connect Filtration System | 100 | $76 |
| Waterdrop | RV Water Filter | RV Inline Water Filter with Flexible Hose Protector | 100 | $31 |
| Express Water | TankRO 4-Gallon RO Expansion Tank - Optimal Water Storage – Express Water | 100 | $19 |
Runtime Min — highest
| Brand | Model | runtime min | Price |
|---|---|---|---|
| Waterdrop | Countertop Reverse Osmosis Water Dispenser - Waterdrop N1 | 60 | $299 |
| Waterdrop | Waterdrop X Series Reverse Osmosis System, X12-Bronze | 30 | $1,299 |
| Waterdrop | Waterdrop M6HG Remineralization Instant Hot Reverse Osmosis System | 30 | $429 |
| Waterdrop | Waterdrop MASTER G5P800A Alkaline Reverse Osmosis System | 30 | $400 |
| Waterdrop | Waterdrop M6H Instant Hot Reverse Osmosis System, Countertop RO Filter | 30 | $419 |
| Waterdrop | Waterdrop G5P700 Reverse Osmosis Water Filter | 30 | $350 |
| Waterdrop | Waterdrop G5P500A Alkaline Reverse Osmosis Water Filter | 30 | $260 |
| Waterdrop | Waterdrop G5P500 Reverse Osmosis Water Filter | 30 | $250 |
| Waterdrop | Waterdrop X Series Dual Flow Reverse Osmosis System, X12-PRO | 30 | $1,399 |
| Waterdrop | G3P600 Reverse Osmosis System - Waterdrop G3P600 | 30 | $539 |