Hi @lorifilipek and @sueinmn
I've had this problem off and on with the Pari Vios Sprint. I called the Pari Vios company to complain about the time it takes and that the solution gets foamy in the cup. The rep told me since I was nebbing 7%, not 3%, that I should alternately clean my cups with sudsy hot water and then the next time, boil for 5 minutes. That helped a lot. But only for a while. So I ordered new cups and the first time it took me over 15 minutes and it was still foamy with solution in the cup. I called the company again and complained. My compressor was only about a year old but they said it was the compressor failing and they sent me a new compressor. Works great now...takes maybe 7-8 minutes. Hope this helps. Think next time I will order a different compressor system and the older style cups from Pario Vios, Not the Sprint. Good luck. Kate