If it helps, I’m in a hard water area and mine has been running nearly 12 months with the hard water filter and doing great. We use it for daily drinking water, filling the Minima and occasional hot drinks, filling the tank probably twice a day at a minimum. For the price it’s a great deal with sanitisation kit too (which I should probably get on its own).
@OsmioWater - Mark, any chance of a deal on some filters as mine will probably need doing in the next month or two 😁