Rheem
Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42)
$689Cheaper
Best Water Softeners · head-to-head
Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) vs NuvoH2O Manor Salt-Free Water Softener System (DPMB)
A sourced, side-by-side comparison. Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) is cheaper at $689. Every spec and price links to its source.
NuvoH2O
NuvoH2O Manor Salt-Free Water Softener System (DPMB)
$999.99
Which is better: the Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) or NuvoH2O Manor Salt-Free Water Softener System (DPMB)?
On the specs we track, they're closely matched. The Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) is the cheaper at $689.
See Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) on Amazon See NuvoH2O Manor Salt-Free Water Softener System (DPMB) on Amazon
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
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) | NuvoH2O Manor Salt-Free Water Softener System (DPMB) |
|---|---|---|
| US price | $689 | $999.99 |
| Brand | Rheem | NuvoH2O |
| Released | — | — |
| Grain capacity | 42.4 | — |
| System type | ion-exchange | salt-free |
| Flow rate gpm | 9.9 | — |
| Salt efficiency lbs per kgrains | — | — |
| Iron removal ppm | 11 | — |
| Nsf certifications | — | — |
| Smart app control | Yes | No |
| Tank warranty years | 10 | 5 |
| Msrp usd | 689 | 1094.99 |
Sources — Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42): rheemwatertreatment.com (verified 2026-06-26). NuvoH2O Manor Salt-Free Water Softener System (DPMB): purewaterguys.com (verified 2026-06-26).
What's the difference between the Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) and NuvoH2O Manor Salt-Free Water Softener System (DPMB)?
Where the two actually differ on the specs we track (4 of 9). Matching specs are omitted.
- System type: Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) ion-exchange vs NuvoH2O Manor Salt-Free Water Softener System (DPMB) salt-free
- Smart app control: Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) true vs NuvoH2O Manor Salt-Free Water Softener System (DPMB) false
- Tank warranty years: Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) 10 vs NuvoH2O Manor Salt-Free Water Softener System (DPMB) 5
- Msrp usd: Rheem Preferred Platinum 42,000 Grain Smart Water Softener (RHW42) 689 vs NuvoH2O Manor Salt-Free Water Softener System (DPMB) 1094.99