What documentation is required for Feature 23 Advanced Air Purification?

• A. Parts 1 & 2 Carbon Filtration and Air Sanitization = LOA from MEP Engineer & Spot Check; Part 3 Air Quality Maintenance = Operations Schedule
• B. Warranty certificate and service agreement
• C. Routine maintenance manual only
• D. Purchase order and invoice

Answer: (A)

The requirement tests the need for both design verification and ongoing operational planning for Advanced Air Purification. For the first two components—carbon filtration and air sanitization—the appropriate documentation is a Letter of Assurance from the MEP engineer confirming the design meets WELL requirements, plus a spot check to verify on-site installation and configuration aligns with that design. For the ongoing maintenance component—air quality maintenance—the necessary document is an Operations Schedule that outlines maintenance tasks, frequencies, and responsibilities to ensure the system continues to perform as intended. Together, these documents show that the system was properly designed and will be actively maintained. Other options don’t provide this combination of design verification and formal maintenance planning; they may cover warranties, service terms, or generic manuals, but not the required verification and scheduled upkeep.