preventing limescale?

hotcookie101

I am about to buy myself a new espresso machine. I live in a very hard water area, and would like to know what is the best way to try and prevent build up (I will also descale, but would prefer not to have to do too frequently)
I have a water filter on my fridge-does that remove any of the calcium? Saleswoman in the store told me not to use bottled water as it is too high in minerals (which goes against what other people have said-ie they use bottled water in their machines)
Any thoughts? Or do I just descale every month?

Jnelhams

You need to check the manual for your fridge if it does then that solves the problem otherwise by a cheap water filter (Tesco/Wilkinsons / Robert Dyas) or descale by using a couple of tablespoons of citric acid crystals or lemon juice in the water, heat up and leave to cool

hotcookie101

Thanks, the fridge filter is basically the same principle as Brita. But I am finding it hard to see if that actually filters the stuff that causes limescale