This is a project I began because the old oil furnace in my house broke. I didn't like the notion of paying someone to reinstall a new furnace, especially when few of the plumbers that quoted the work actually seemed to know current technology, nor could I afford any of their bids. I went without domestic hot water & heat for over six months, approximately April to September, because I decided to install it myself. I wanted one of the best, most energy efficient boilers, and prior to this project I had only done soldering on small half inch fix it repairs for minor plumbing. It was one of the most stressful times of my life. I wanted to give up on several occasions and in the end saved very little money in comparison to the amount of time and emotion that it took from me... however I think the experience was invaluable.