AHU Compliance Aid
Healthcare AHU inspection, verification and sign-off workflow.
Status Key
1. General Information
Status Key & Engineering Interpretation
| Status | Meaning | Typical Use |
|---|---|---|
| PASS | Item fully compliant and acceptable | No defects or concerns identified |
| FAIL | Item non-compliant or unacceptable | Defect requires corrective action before acceptance |
| OBSERVATION | Issue noted but not currently preventing operation | Minor concern, improvement item, or item to monitor |
| CONDITIONAL PASS | Accepted subject to agreed remedial actions | Can proceed temporarily with outstanding snagging/risk agreement |
| ADVISORY | Recommendation or engineering guidance only | Good practice suggestion, maintainability improvement, future consideration |
| PENDING | Item not yet inspected, tested, or witnessed | Awaiting commissioning, access, test results, or documentation |
| N/A | Item not applicable to this AHU configuration | Example: no humidifier fitted, no thermal wheel fitted |
Risk / Engineering Interpretation
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.
Suggested AE/AP Guidance
| PASS | Compliant and acceptable |
| FAIL | Remedial action required |
| OBSERVATION | Engineering observation recorded |
| CONDITIONAL PASS | Accepted subject to agreed actions |
| ADVISORY | Recommendation only |
| PENDING | Inspection/test outstanding |
| N/A | Not applicable to installed configuration |
Evidence References
Risk / Defect Classification
| Ref | Description | Risk Type | Risk Level | Action Required | Target Date | Del |
|---|