Infinity T4 Twin-Tank Water Softener
Non-Electric Twin-Tank System · Suitable for 1–4 Bathrooms · 10 Year Warranty
Key Features
Twin-Tank Technology
Continuous soft water — no downtime during regeneration
Non-Electric
Powered by water pressure alone — zero electricity costs
10 Year Parts Warranty
Comprehensive manufacturer warranty with 2 years labour
Compact Design
Just 219mm wide — fits under a standard kitchen sink
Technical Specifications
| Dimensions (H x W x D) | 498 x 219 x 468mm |
|---|---|
| Salt Type | Block Salt (2 x 4kg) |
| Suitable For | 1-3 bathrooms |
| Peak Flow Rate | 51 litres per minute |
| Water Pressure Range | 1-7 bar |
| Regeneration Time | 11 minutes |
| Water Per Regeneration | 20.5 litres |
| Salt Per Regeneration | 340g |
| Power Supply | Non-electric (kinetic water power) |
| Warranty (Parts) | 10 years |
| Warranty (Labour) | 2 years (manufacturer service team) |
| Certifications | WRAS Approved, BS14743 Compliant |
Product Description
Pioneering Twin-Tank Technology
Unlike single-cylinder softeners that go offline during regeneration, the Infinity T4 uses a twin-tank design with alternating cylinders. When one tank regenerates, the other continues to supply soft water — so your home never goes without. The advanced non-electric valve switches between tanks automatically using water pressure alone, with no timers, clocks or electrical components to fail.
Compact Design, Big Performance
At just 219mm wide, the T4 fits neatly under a standard kitchen sink or in an airing cupboard. Despite its compact footprint, it delivers a peak flow rate of 51 litres per minute — more than enough for simultaneous use across multiple outlets. The lightly tinted salt lid with magnetic closure makes it easy to check salt levels at a glance.
Economical to Run
The T4 uses standard 4kg block salt, widely available from supermarkets or through our salt delivery service. With a typical monthly salt cost of around £11.60 for a family of four and zero electricity costs, it is one of the most economical softeners to run. The turbine metering system ensures salt is only used when needed, further reducing waste.
Soft Rinse Technology
After each regeneration, the T4 performs a backwash rinse using soft water. This prevents any brine from reaching your household supply and helps extend the life of the ion exchange resin — keeping your softener performing at its best for years to come.
Built for Britain
Designed in the UK, the Infinity T4 is built to handle British water conditions. It is WRAS approved and conforms to British Standard BS14743, giving you confidence in its quality, safety and performance. 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
“Fast response to our enquiry, full information provided, work booked for following week. Fitter arrived on time, pleasant, efficient, very tidy and cleaned up when work finished. Very neat pipework, showed us how to isolate soft water if required at any time, and showed us position of new stopcock. Explained how filter system worked, helped us to set up App for notifications when salt low. Stacked spare salt in garage, advised how to apply for more supplies. Presented us with a delightful gift hamper of locally sourced products. Would highly recommend Southern Softflow Ltd.”
“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.”
“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.”
“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.”
“We recently had Southern Softwater visit our home to walk us through the available options, and the experience from start to finish was excellent.The initial consultation was clear, informative, and pressure-free. They took the time to understand our needs, explained the different systems in a straightforward way, and answered all of our questions patiently. It felt like they genuinely wanted to help us make the right decision rather than just make a sale.The installation process was just as impressive. The installer arrived on time, was extremely professional, and worked efficiently while keeping everything tidy. He explained how the system works, made sure everything was set up perfectly, and left the area clean once the job was complete.Overall, we’re delighted with both the service and the product. It’s rare to find a company that delivers such a smooth and professional experience from consultation through to installation. Highly recommended.”
“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 !”
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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