The key to a Successful Boiler Repair Lies in Having the Right - Technical Knowledge. Boiler repair always requires a commitment to safety. Although it may resemble a magic wand, a voltage stick is designed for one purpose only: detecting voltage. It should never be used without the necessary precautions and should certainly not be treated like a magical wand. Before starting any work, it is essential carryout a voltage test by holding it close to the boiler or any metallic area. This testing...