Firstly the bottles do not fit in the fridge upright (I have a very modern fridge). Which means the bottles go flat very quickly when laid horizontally. Secondly, the head thingy in my unit gave up after 18-24 months. Oh Bubbles would not replace for free wanting a further $150 for a replacement head repair. I had to pay for a courier to send it to them to hear this news. When they returned the broken unit, I threw it in the bin. Back to good ole Soda Stream for me.