What it does for your water
The Aquasana WH-SF40-BASE 40,000-Grain Water Softener is a whole-house softener rated at 40,000 grains. Its listing gives a service flow of 15.5 GPM.
The rating assumes a heavy salt dose; at a salt-saving setting expect about 30,000 grains from its rating, enough for up to 3 people on 15 grains-per-gallon water regenerating weekly, or 2 on 25 grains per gallon. Run your household's numbers.
Other listed details: mounting Whole House Water Tank; power Corded Electric; capacity stated as 230 lb; model WH-SF40-BASE; warranty 5/10-Year Limited Warranty; material Fiberglass.
The listing gives dimensions of 30 in (L) x 16 in (W) x 43 in (H), a shipping weight of 92 lb and softener tank, control valve, brine cabinet in the box.
Warranty, per the listing: 5/10-Year Limited Warranty.
Is it the right unit for your house?
Choose it when
- Up to 3 people on 15 gpg water
- Replacing an older softener
Pass on it when
- More than 2 people on 25 gpg water
- Iron above about 5 ppm without an iron filter
Where it wins and where it loses
Wins
- 40,000-grain rating
- 15.5 GPM service flow
Loses
- Valve not named on the listing
- Plumbing, drain and outlet needed
- Adds some sodium; potassium chloride is the alternative
Limits to know about
- Figures are the maker's or seller's own; check fit and capacity against your water test and your equipment's manual.
Maker's figures
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | WH-SF40-BASE | Retailer |
|---|---|---|
| Features (seller) | NSF/ANSI Standard 44, Programmable, Scale Reduction, Water Saver Technology | Retailer |
| Dimensions (seller) | 30"L x 16"W x 43"H | Retailer |
| Material | Fiberglass | Retailer |
| Mounting / installation | Whole House Water Tank | Retailer |
| Method | Ion Exchange | Retailer |
| Service flow (maker) | 15.5 GPM | Retailer |
| Product weight | 92 lb | Retailer |
| Model name | WH-SF40-BASE | Retailer |
| Warranty | 5/10-Year Limited Warranty | Retailer |
| Grain capacity (maker) | 40,000 grains | Retailer |
Units to weigh against it
Other water softeners in the catalog
- Aquasure Harmony Series AS-HS64FM 64,000-Grain Water Softener
- Aquasure Harmony Series AS-HS64SCP 64,000-Grain Water Softener
- Aquasure Harmony Series WS-EM-64 64,000-Grain Water Softener
- DuraWater Fleck 5600SXT 32,000-Grain Water Softener
Every water softeners on one grid · All Aquasana units we cover
Final verdict
A practical whole-house softener for up to 3 people on 15 gpg water.
Where to buy
Our links open this exact model's product page. Prices and stock change; check what's included before you order.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure