# Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) vs EcoPure EP42 42,000 Grain Water Softener: specs and price compared

A sourced, side-by-side comparison of the Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) (Rheem) and EcoPure EP42 42,000 Grain Water Softener (EcoPure) among water softeners.

## Side by side

| Spec | Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) | EcoPure EP42 42,000 Grain Water Softener |
| --- | --- | --- |
| US price | $689 | not published |
| Brand | Rheem | EcoPure |
| Grain capacity | 42.4 | 42 |
| System type | ion-exchange | ion-exchange |
| Flow rate gpm | 9.9 | — |
| Salt efficiency lbs per kgrains | — | — |
| Iron removal ppm | 11 | 11 |
| Nsf certifications | — | NSF Certified |
| Smart app control | Yes | No |
| Tank warranty years | 10 | 10 |
| Msrp usd | 689 | — |

## Key differences

- Grain capacity: Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) 42.4 vs EcoPure EP42 42,000 Grain Water Softener 42
- Smart app control: Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) Yes vs EcoPure EP42 42,000 Grain Water Softener No

## Sources

- Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42): https://www.rheemwatertreatment.com/product/preferred-platinum/ (rheemwatertreatment.com, verified 2026-06-26)
- EcoPure EP42 42,000 Grain Water Softener: https://ecopure.com/product/42000-grain-water-softener-ep42/ (ecopure.com, verified 2026-06-26)

Canonical: https://frontdeskreview.com/gear/water-softeners/rheem-rhw42-vs-ecopure-ep42/
Cite: Per The Front Desk Review, Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) ($689) vs EcoPure EP42 42,000 Grain Water Softener (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/water-softeners/rheem-rhw42-vs-ecopure-ep42/
License: CC BY 4.0.