TwinTec S5 Water Softener
5th Generation Non-Electric System · Suitable for 1–3 Bathrooms · 10 Year Warranty
Key Features
5th Generation Technology
Latest twin-cylinder design with improved eco-features
Non-Electric
Powered by water pressure alone — zero electricity costs
Eco-Friendly Cabinet
Made from 62% recycled plastic — saving 84 tonnes per year
10 Year Parts Warranty
Tested to over 1 million cycles with 2 years labour warranty
Technical Specifications
| Dimensions (H x W x D) | 495 x 206 x 435mm |
|---|---|
| Salt Type | Mini Curve Salt Blocks (4 x 2.15kg blocks) |
| Suitable For | 1-4 bathrooms |
| Daily Capacity | 3,000 litres |
| Peak Flow Rate | 56 litres per minute |
| Water Pressure Range | 1-10 bar (PRV recommended above 6 bar) |
| Regeneration Time | 11 minutes |
| Water Per Regeneration | 17 litres |
| Salt Per Regeneration | 300g |
| Resin Type | Ultra-fine 350 micron beads |
| Power Supply | Non-electric (water pressure powered) |
| Warranty (Parts / Labour) | 10 years parts / 2 years labour |
| Certifications | WRAS Approved, BS14743 Compliant |
Product Description
Next Generation Twin-Cylinder Technology
The TwinTec S5 uses the latest 5th generation water softener technology with its improved design, eco-features and robust testing. With its unique twin parallel cylinder design, one cylinder regenerates while the other continues supplying soft water to your home — ensuring an uninterrupted 24/7 supply. The entire process is powered by your incoming water pressure, with no timers, motors or electrical components.
Eco-Friendly by Design
The TwinTec S5 is the UK’s first eco-friendly water softener. Its cabinet is made from 62% recycled plastic sourced from contact lens manufacturing moulds — saving 84 tonnes of plastic waste from landfill each year. Combined with its non-electric operation and demand-based regeneration, the S5 minimises its environmental impact while delivering outstanding performance.
Ultra-Fine Resin Technology
The S5 features ultra-fine 350 micron resin beads — the best in the industry. This advanced resin formula has a higher exchange capacity than standard beads, making the softener more efficient and reducing salt and water usage. The high-grade resin is ideal for both high and low flow rate applications, ensuring consistent performance across all household demands.
Mini Curve Salt Blocks
The S5 uses revolutionary Mini Curve salt blocks that are 47% lighter than traditional blocks, making them easier to carry and handle. The redesigned salt chamber accommodates 4 Mini Curve blocks compared to the previous model’s 2 standard blocks, increasing the salt capacity and reducing the frequency of refills. All salt must be Grade A certified to BS EN 973 standard.
Hand-Built in Britain
The TwinTec S5 has a proud British heritage, designed, hand-built and individually tested in Woking, Surrey by TwinTec’s water softener experts. The factory has been in the same location for over 40 years. The S5 is WRAS approved and conforms to British Standard BS14743. Rigorously tested to over 1 million cycles at the factory, it is backed by a 10-year parts warranty and 2-year labour warranty from the manufacturer.
Explore Our Range
Professional installation throughout Dorset, Hampshire & Wiltshire
Book A Free Home Survey Today
Our friendly team will visit your home, assess your water needs and provide a no-obligation quote
What To Expect
Speak To Us & Survey
Give us a call or complete our simple 60 second form. We will arrange a free home survey at your convenience.
Tailored Solution & Quote
We will visit your home, assess your needs and provide a no-obligation quote for the best solution.
Installation
Our experienced engineers will install your new water softener or drinking water system at a time that suits you.
Ongoing Support & Salt
We offer ongoing support, servicing and salt delivery to keep your system running smoothly.
Our Services
We offer a full range of services from sales & installation of water softeners to ongoing maintenance and supplies
What Our Customers Say
“Southern Softflow’s response to my call for help was amazing, from Edith in the office, Keith the boss man to Will the plumber who worked so hard and did a first class job. A truly great personal service not found easily these days. My heartfelt thanks to them all !”
“Brilliant service. Survey done clear explanation of product from Ben. Fitting done three days later. Very helpful and tidy technician. Added a hard water tap at the last minute no problem. Would highly recommend the service and product. Thanks guys!”
“We've had fantastic service from Southern Softflow from initial enquiry through to installation and beyond. This is our first water softener (TwinTec S5) and we can't fault it (we wish we'd installed one years ago). Southern Softflow's friendly and accommodating service is what set them apart from other companies that quoted. There was no pressure to place an order, and they were very accommodating, as this softener was purchased during a renovation of the whole downstairs, including new kitchen, bathroom & plumbing throughout, so they had to coordinate with our plumber and fit in around other trades. Competitively priced. Fantastic product. Excellent service. I highly recommend Southern Softflow.”
“Moving home to an area with very hard water, I decided it was time to install a water softener. After research, I chose Southern Softflow, who offered exactly the reassurance and expertise I was seeking. Decision to installation took two days. Installation itself took a little over two hours, was carried out neatly, efficiently, and professionally. The new tri-flow drinking tap looks great in the kitchen, and even though I’ve used Brita filters for years, tea already tastes noticeably better after only 12 hours. Many thanks to Ben, Will, and the team, greatly appreciated. A full 10 out of 10.”
“From the first contact through to survey visit and arranging for installation, this family-run company was excellent, with plenty of communication. The water softener had to be installed in a very restricted space with very difficult to access mains water inlet and drain. However the company plumber found a workaround, even preserving some of the middle shelf in the cupboard concerned. The installation was completed in one morning, working was clean, and the finished job is very neat.”
“I have dealt with Southern Softflow for 22 years. Recently after 22 years a fault developed on the machine. The machine was taken away and repaired at a very reasonable cost. As I had moved house I had the machine installed by the kitchen company installing the kitchen and they made a poor job of the pipework needed. When Will from Southern Softflow brought the repaired machine back he rerouted the pipework and put new valves in and did a very neat and professional job. I am delighted. A very genuine and professional company ,a delight to deal with.”
Are You Fed Up With The Impacts Of Hard Water?
Emily was looking to protect her new build home in Shaftesbury, Dorset from the impacts of limescale. After living in her new house for two years ago and consequently became frustrated with the impacts of limescale.
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