Gawan said:
Actually distilled water should have no taste at all, only a different feeling in the mouth.
At the beginning I had the same problem as you, that there was something tasty in the water. I tried different things glass bottles, cleaned the machine, let it run for many times only steaming (without the rotor) and nothing worked (a filter I couldn't find for that machine).
I did send this distiller back to the seller then and bought another brand and since then there is no extra taste anymore in the water.
The second machine has no plastic parts in it, where the water is going through and this is my explanation for it.
Have you bought a new distiller maybe, where it could take some runs after the taste is vanishing, for another explanation?
I also have had the problem of the distilled water tasting funky. I recently acquired this distiller:
http://www.purepro.net/mh943.htm
I let the distiller run a few rounds but the taste remained. I was perplexed as the boiler part is stainless steel, as well as the condenser (which can be either plastic or aluminum in some models). I also used a stainless steel pan for collecting the water.
Finally I realized that the flavour comes from the inner part of the top lid of the distiller: it is made from a "porous" sort of plastic.
Upon sniffing, the lid actually smelled the same as the distilled water tasted. I let the lid "outgas" for a while, and ran the distiller again a few times with no help: the taste still remained. I guess the hot steam dissolves material from the plastic, every time the machine is used. Unfortunate that they did not use a "harder" plastic on the inside of the lid.
I'll send the distiller back to the manufacturer.
Gawan, may I ask which brand did you purchase, with which there was no extra taste?
I'm thinking perhaps the Berkey water filter would be another good option, especially if there will be power outages in the future.