I was after a water filter system that removes all the chemicals added to our water supply. However, all the systems seemed bulky until I came across the tankless options. I spoke to Cam over the phone who helped me understand my options and I was so happy that they had a system that could fit under my sink without the bulky water tank. I ended up having the AWF400 system installed and I couldn't be happier with their service and water filter system! Highly recommended!