Had a plastic kettle from Tesco that was, well, just a kettle, I suppose. Then about a year after we bought it we noticed that what we thought was limescale roughening up the inside was, for the most part, the plastic degrading! Ten minutes later we were in Tescos again and chose a stainless steel one - the cheapest at £7 or so. It's great. Limescale collects on the metal and we just put de-scaler in every now and again.
Had a plastic kettle from Tesco that was, well, just a kettle, I suppose. Then about a year after we bought it we noticed that what we thought was limescale roughening up the inside was, for the most part, the plastic degrading! Ten minutes later we were in Tescos again and chose a stainless steel one - the cheapest at £7 or so. It's great. Limescale collects on the metal and we just put de-scaler in every now and again.