The TwinTec S4 Water Softener TwinTec S4 Simple effective and easy to use 100% British developed and manufactured Non-electric Water softener Suitable for families and houses with up to 3 bathrooms Uses block salt 1 block per person per month on average Compact size fits neatly under kitchen sink Ten-year guarantee   Dimensions: Height: 490mm Width: 205mm Depth: 440mm The TwinTec S4 provides continuous soft water for all the family. Key Features Block Salt Simple to top up with salt by adding two blocks of salt as required. Providing Soft Water throughout your house Soft water to every tap. Professionally installed Our installation engineers are plumbers and trained installers, we dedicate a whole day to your installation. Efficient and economical to run Operates on demand. No electricity is required. Peace of mind Ten years parts guarantee and two years parts and labour guarantee.   Download the TwinTec S4 Brochure