A few years ago we decided to replace our old, too small water heater and wanted to learn about on demand hot water solutions. Sean advised us on various options and how certain boilers could be used to heat the house in the winter as well. He produced a clear budget, executed a clean and efficient install and has been extremely prompt replying to any service calls (24/7 basically). We decided to upgrade our outside AC unit which Sean installed as well. It has been problematic and so Sean has arranged for a replacement under warranty which he plans to install in the spring. Overall a first class job!