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Service ConsumerProducts from WMF, Silit and Kaiser
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Tel. CH: 0800 - 002699

Within 2 years 6 months you also get free spare parts. New foamer / whisk insert costs 19.- I just ordered two...

Spare parts are available from WMF's Swiss repairer. I was able to replace the whisk after less than 2 years of use (under warranty). WMF had given me the contact: infoKD@telion.ch but I don't know if they are still WMF repairer, to check.

I don't know - it hasn't been necessary to replace anything so far.