Rheem
Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42)
$689
Best Water Softeners · head-to-head
Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) vs GE 40,000 Grain Water Softener (GXSH40V)
A sourced, side-by-side comparison. GE 40,000 Grain Water Softener (GXSH40V) is cheaper at $569. Every spec and price links to its source.
GE
GE 40,000 Grain Water Softener (GXSH40V)
$569Cheaper
Which is better: the Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) or GE 40,000 Grain Water Softener (GXSH40V)?
On the specs we track, they're closely matched. The GE 40,000 Grain Water Softener (GXSH40V) is the cheaper at $569.
See Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) on Amazon See GE 40,000 Grain Water Softener (GXSH40V) on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) | GE 40,000 Grain Water Softener (GXSH40V) |
|---|---|---|
| US price | $689 | $569 |
| Brand | Rheem | GE |
| Released | — | — |
| Grain capacity | 42.4 | 40 |
| System type | ion-exchange | ion-exchange |
| Flow rate gpm | 9.9 | — |
| Salt efficiency lbs per kgrains | — | — |
| Iron removal ppm | 11 | — |
| Nsf certifications | — | — |
| Smart app control | Yes | Yes |
| Tank warranty years | 10 | — |
| Msrp usd | 689 | 649 |
Sources — Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42): rheemwatertreatment.com (verified 2026-06-26). GE 40,000 Grain Water Softener (GXSH40V): geappliances.com (verified 2026-06-26).
What's the difference between the Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) and GE 40,000 Grain Water Softener (GXSH40V)?
Where the two actually differ on the specs we track (2 of 9). Matching specs are omitted.
- Grain capacity: Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) 42.4 vs GE 40,000 Grain Water Softener (GXSH40V) 40
- Msrp usd: Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) 689 vs GE 40,000 Grain Water Softener (GXSH40V) 649