You'll find my earlier review from when I purchased this system back in Aug'2014 (but I only did the review of that in late 2015/early 2016).
The Kinetico K5GX reverse osmosis water system installed under our kitchen sink started to leak in late Dec'15, which is less than two years so I was pretty surprised / disappointed that happened.
However, I was able to get a hold of Aquareal to schedule a service appointment for them to come fix it in early Jan'16.
I was hoping it would be covered under warranty but apparently not since I had to pay about $200 CDN.
They were able to fix and we have not had any further issues since (currently Aug. 5/16).
The thing we did not like was the repair/service technician (although seemed very nice) smelled really bad with cigarette smoke [not body odour issues]. We especially did not like this since we have a new born baby in the house and I'm allergic & therefore sensitive to cigarette smoke. To be clear, obviously the tech did not smoke inside the house.
Even after he left, the cigarette smoke smell lingered in our home.