I've read in a water heater manual, and was told by a friend, that water filtered with a water softener is bad for tank water heaters, without being given any other explanation.
On the website of a major water conditioner company however, it is said that it is only naturally scale-free water that presents a risk to water heaters, and that filtered water will not damage but instead preserve equipment.
Does a salt-based water softener damage or prevent an electric tank water heater from fonctionning optimally? If so, how does it happen, and what are the risks?
- My water heater: ACA 250 VERT 555 STEA MO 3050002 (250l electric tank water heater with steatite)
- My water softener: Pentair Autotrol brand model 255 (controller of a salt-based water softener)
- Link to a article in French stating that water softeners are beneficial to all house equipment (I could not find the original article I found, nor retrieve the manual I mentioned)