Water Softeners

[Questman]

The cold water in my bathroom tests as soft yet the hot water tests as hard. What can have gone wrong?

[rockyracoon]

The water softener is not connected to your hot water

[Buenchico]

If limescale built up inside your hot water tank prior to the water softener being installed, some of it could now be being released into the water that flows from it.

[bhg481]

It depends on which sort of softener you have. If it's one of the computer-controlled type it will have let the water go hard because you have used more water than it predicted. When it had gone hard you ran some hot water which will have been replaced with hard so there is some hard water in your hot-water storage cylinder. It will slowly clear itself. The dual-cylinder softeners are more expensive but work on the volume of water actually used ie, not predicted usage, so they never let the water go hard.