

💧 Elevate your water game with effortless, high-flow softening!
The BWT WS455 Hi Flow Electronic Demand Water Softener is a compact, 10-litre under-sink unit designed for modern homes. It supports high water flow rates ideal for power showers, uses 22mm hoses and valves for unrestricted flow, and offers flexible salt options (block or tablet). Featuring fully automatic operation with smart water monitoring, it optimizes salt and water use for cost efficiency and convenience, making it a durable, low-maintenance solution for scale and scum reduction.













| ASIN | B077ZKKC2R |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 73,070 in DIY & Tools ( See Top 100 in DIY & Tools ) 27 in Under-Sink Filters |
| Colour | Blue |
| Customer Reviews | 4.2 4.2 out of 5 stars (61) |
| Date First Available | 9 Dec. 2017 |
| Included Components | Hi Flow Electronic Demand Block/Tablet Water Softener |
| Installation method | Under Sink |
| Item Package Quantity | 1 |
| Item Weight | 22.5 kg |
| Item model number | WS455 |
| Manufacturer | BWT |
| Material | Plastic, Stainless Steel |
| Maximum Pressure | 5 Bars |
| Measurement System | Metric |
| Number of Pieces | 1 |
| Part Number | WS455 |
| Power Source | AC/DC |
| Product Dimensions | 48 x 27 x 53.2 cm; 22.54 kg |
| Size | 10 Litre |
| Special Features | Scale and Scum Reduction |
| Style | Softener |
D**M
Awesome bit of kit!
Awesome bit of kit, installed myself as simple to connect two 22mm copper pipes. Comes with two 22mm flexible hoses but prefer copper. This unit has run without any issues for 7 years. Just booked a service as one of the seals has failed, should be serviced every 2 years, model still made and all parts are available. Would purchased again if needed.
K**N
Great product.
It’s my second purchase of this machine, this time for my mum. Works perfectly, can highly recommend. Great value for money and so easy to use.
E**M
All the fittings are 22 mm and huge!
I fitted this myself. The video provided by the manufacturer, on you tube, showed that it had 15mm hoses and valves. This have me confidence that this softener would fit easily into the space I had available. When it arrived the hoses were massive and steel braided, it was like wrestling a python!!! All of the valves were huge and cumbersome to fit! I eventually managed it and the softener works well but I don't know why it needs 22mm fittings when it is connecting into a 15mm domestic system! The video should reflect the reality! I was asked to review flavour but we don't drink the softened water, I have retained a hard water supply to the kitchen tap and the outside tap.
G**.
Wonderfully soft water.
Great replacement for an old Monarch water softener. Easy to fit, just waiting for free company commisioning. But the water is really soft now!
K**R
Great piece of kit
Bought the WS 455 as a replacement for a well used old model located under my sink (a very tight fit). Following discussions with the BWT customer service team mainly around measurements and capacity, I decided on the 455 rather than one of the larger capacity models. Self installed, the 22mm installation kit was difficult to work into the available space, but got there in the end. We live in a very hard water area which tested at 390ppm, four bedroom house, average water consumption. 24 hours after commissioning water tested at 30ppm. This unit works well easily supplies our combination boiler, would recommend it.
R**N
Bad after sales service
Product is good but the servo is really low quality
C**S
Water softener
Easy to fit and works very well However the delivery was problematic as I was lost so I arranged a replacement which was easy to do and it arrived shortly after
O**B
Easy to install
Easy to install. If you know what you are doing. Contains some unnecessary fittings if you are replacing a similar unit.
Trustpilot
1 day ago
1 month ago