Appliance installers and repairers need knowledge in the following areas:

• Customer and Personal Service: Providing special services to customers based on their needs.
• Mechanical: The design, use, and repair of machines and tools.
• English Language: The meaning and use of the English language.
• Administration and Management: How to run a business or group.
• Clerical: General office work such as filling and storing information.
• Computers and Electronics: Computer hardware and software.
• Sales and Marketing: The methods for selling products and services.
• Engineering and Technology: How to use computers and rules of engineering to design and produce goods and services.