Whirlpool WHES48 PRO
A strong all-round pick for larger families on hard city or well water: high flow, certified efficiency and a longer parts warranty for the price.
Blain's Farm & Fleet $679.99$679.99
The Whirlpool WHES48 PRO is the better water softener overall, rated 3.8 to 2.7. The Whirlpool WHES48 PRO leads on value and certification. The SpringWell SS4 wins on warranty and flow. The Whirlpool WHES48 PRO costs $1,000.01 less ($679.99 vs $1,680).
SpringWell SS4
A mid size softener for four to six bathrooms, for buyers who want a long warranty and will pay well above budget brands for it.
SpringWell $1,680$1,680
Prices were last checked November 1, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Whirlpool WHES48 PRO for value ($14.17 per 1,000 grains ($679.99, 48,000 grains) vs $35 per 1,000 grains ($1,680, 48,000 grains)) and certification (certified to NSF/ANSI 44 vs not certified to NSF/ANSI 44).
- Choose the SpringWell SS4 for warranty (5 years on the valve, 99 years on the tanks vs 3 years on the valve, 10 years on the tanks) and flow (13 gpm service flow vs 11.9 gpm service flow).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 32,001 to 48,000 grains water softener; a clear win is highlighted. How we rank explains each one.
| Factor weight | Whirlpool WHES48 PRO | SpringWell SS4 |
|---|---|---|
| Overall rating | 3.8/5 | 2.7/5 |
| Value 30% | 68 $14.17 per 1,000 grains ($679.99, 48,000 grains) | 0 $35 per 1,000 grains ($1,680, 48,000 grains) |
| Salt efficiency 20% | 100 5,090 grains per lb of salt | 50 salt efficiency not published (neutral score used) |
| Flow 15% | 65 11.9 gpm service flow | 83 13 gpm service flow |
| Warranty 25% | 22 3 years on the valve, 10 years on the tanks | 44 5 years on the valve, 99 years on the tanks |
| Certification 10% | 100 certified to NSF/ANSI 44 | 0 not certified to NSF/ANSI 44 |
Specifications
| Whirlpool WHES48 PRO | SpringWell SS4 | |
|---|---|---|
| Capacity | ||
| Rated capacity | 48,000 grains | 48,000 grains |
| Resin | 1.3 cu ft | - |
| Service flow | 11.9 gpm | 13 gpm |
| Salt efficiency | 5,090 grains per lb | - |
| Highest hardness | 160 gpg | - |
| Highest iron | 12 ppm | - |
| Control | ||
| Valve | Whirlpool demand valve | - |
| Regenerates on demand | Yes | - |
| App or remote monitoring | No | - |
| Bypass valve included | Yes | No |
| Resin tank | - | 10 x 54 in |
| Certification and warranty | ||
| NSF/ANSI 44 | Yes | No |
| Valve warranty | 3 years | 5 years |
| Tank warranty | 10 years | Lifetime |