HTM Companion AHU Aid

PASS

Used where the installation complies with specification, HTM intent is achieved, maintainability is acceptable and no safety or infection control concern exists.

Examples: coil accessible, filter correctly fitted, airflow proving operational.

FAIL

Used where a compliance failure, safety issue, unacceptable maintainability issue, infection control risk or non-functioning component exists.

Examples: no drain trap, inaccessible fan removal, standing water, failed frost protection.

Typically requires: remedial works, reinspection and closure evidence.

OBSERVATION

Used where an item is not ideal, may require improvement later, or creates an engineering concern not severe enough for outright failure.

Examples: tight maintenance access, cosmetic casing damage, awkward valve access, minor labelling issue.

CONDITIONAL PASS

Accepted for operation subject to agreed outstanding actions. This is especially important in healthcare projects where operational need, risk assessment and agreed snagging must be clearly recorded.

Examples: minor snagging outstanding, documentation incomplete, temporary controls strategy, non-critical access issue awaiting modification.

Usually linked to: target closure date, defect list and agreed responsibility.

ADVISORY

Not a defect. Used for engineering recommendations, maintainability suggestions, lifecycle improvements and best-practice comments.

Examples: recommend additional lighting, improved valve labels, improved access arrangement.

PENDING

Used where the item has not yet been witnessed, tested, accessed or documented. Avoids forcing pass/fail prematurely.

Examples: HEPA test pending, controls integration incomplete, BMS graphics not yet available.

N/A

Used where the component simply does not exist within the installed AHU configuration.

Examples: no humidifier, no thermal wheel, no face and bypass dampers, no standby fan arrangement.