Welcome to Si Energy. We don't believe in closing a sale, but rather opening a relationship. When you buy a boiler from us, you can be assured that you will receive top quality after sales assistance. In a climate of rising fuel costs and increasing damage to the environment it is essential that we alter our choices. Therefore choose an Si Energy boiler to reduce your heating costs, not to mention your carbon footprint!!! Please have a look around our site and see for yourself the quality products.