The biggest mistake most people make when soldering is failing to get the interior of the fitting and the exterior of the pipe clean and shiny. Polish these surfaces with a fine emery clot until bright. When soldering, never heat the pipe, but instead heat the fitting. Doing so allows the solder to be drawn into the fitting by capillary action. If you don’t want to bother, with all this, then we have another idea…Just call Hancock Plumbing
Did you know that the first indoor water heaters were installed in Victorian homes in the 1870's.
Read more here: