I went ahead with the installation of this and I am pleasantly impressed with it. It's a limescale treatment and not a water softener.
I would normally have to descale my kettle twice a week the limescale is that bad. I cleaned it to within an inch of it's life on Monday when it was installed and it's still in pristine condition 5 days later.
I have also noticed that my hair texture feels different too and the dishes are coming out of the dishwasher a lot cleaner. The system works for 7/8 years and is guaranteed for 5 years. The plumber said it will work to remove the existing limescale that is currently in the pipes and water tank.
I would highly recommend to anybody in a hard water area.
I currently have a conventional salt based water softner solution which is 4 years old. I use an external salt container and put salt like AXAL salt PRO in it.
Can you suggest a Water Conditioner for main water descaling as well as drinking water?
Any disadvantages compared with Salt based water softners?