An installer is someone who uses various pieces of equipment to set up any number of goods or services. As an installer, you use a variety of tools to get the job done. Depending on what job you are doing, those tools may be basic like hammers and drills or more industry-specific tools like bucket trucks, duct tape, and multiple types of saws. Your responsibilities change slightly depending on your industry, but the overall goal of ensuring a product or service is working properly remains stagnant across industries. Installation is a highly physical job that requires excellent physical stamina.