For client-provided appliances, which specification approach is appropriate?

• A. Proprietary specifications
• B. Performance-based specifications
• C. Open generic specs
• D. Reference standard only

Answer: (A)

When the client provides appliances, you need to fix the exact products to be installed so there’s no substitution that could misfit dimensions, connections, or warranties. A proprietary specification does exactly that by naming the specific appliance models to be used, ensuring the contractor coordinates the provided units with the building systems and finishes. If you used open generic, performance-based, or reference standards alone, the contractor might substitute with different appliances or fail to ensure compatibility with the client’s items, leading to gaps in fit, electrical and mechanical connections, or warranty coverage. Therefore, specifying the exact client-provided appliances with a proprietary approach is the most appropriate choice.