I had an Accel CS installed in my house about 2.5 months ago. I love the concept behind the units and the science behind them as well. I was excited to see how much of a difference it would make within my home. We installed the new unit and a few things I noticed off the start: 1. Fast and Endless hot water. I am no longer having to stagger showers and doing household things 2. The boiler is super quiet compared to the old boiler 3. The gas bill has gone down drastically I figured I would like to share the information with you and your team. I love my boiler.