Overview

This project establishes a quantitative framework that measures environmental conditions, system performance, and verified reductions in airborne transmission risk.

Key Performance Indicators (KPIs) are designed to:

• Define baseline conditions
  
  

• Track real-time environmental performance
  
  

• Measure intervention effectiveness
  
  

• Verify sustained improvement over time
  
  

🔹 Core KPI Categories

1. Environmental Condition Compliance

KPI 1.1: Time Within Target Environmental Range (%)

Measures the percentage of occupied time that indoor conditions remain within defined thresholds associated with reduced airborne transmission risk.

Variables include:

• Temperature
  
  

• Relative humidity
  
  

• Ventilation performance
  
  

Year 1 Target (2026):

• Achieve ≥ 75% compliance during occupied hours
  
  

Year 2 Target (2027):

• Achieve ≥ 90% compliance during occupied hours
  
  

2. Ventilation & Airflow Performance

KPI 2.1: Verified Air Changes Per Hour (ACH)

Measures actual ventilation performance compared to required standards.

Year 1 Target:

• Establish baseline ACH across all classrooms
  
  

• Improve ACH by ≥ 20% where deficiencies are identified
  
  

Year 2 Target:

• Maintain ≥ 90% compliance with target ACH levels
  
  

KPI 2.2: Equivalent Clean Air Delivery Rate (eCADR)

Measures combined effect of ventilation and filtration in delivering clean air.

Year 1 Target:

• Establish verified eCADR baseline
  
  

• Improve by ≥ 15–25% in deficient environments
  
  

Year 2 Target:

• Maintain consistent eCADR performance within defined thresholds
  
  

3. Intervention Effectiveness

KPI 3.1: Verified Post-Intervention Improvement (%)

Measures the difference between pre- and post-intervention environmental conditions.

Year 1 Target:

• ≥ 70% of interventions result in measurable improvement
  
  

Year 2 Target:

• ≥ 90% of interventions produce verified improvement
  
  

KPI 3.2: Reduction in Time Spent in High-Risk Conditions

Measures reduction in duration where environmental conditions fall outside safe thresholds.

Year 1 Target:

• Reduce high-risk exposure time by ≥ 30%
  
  

Year 2 Target:

• Reduce high-risk exposure time by ≥ 60%
  
  

4. Energy-to-Environment Efficiency

KPI 4.1: Energy per Protected Occupant (kW/person)

Measures the amount of energy required to maintain verified safe environmental conditions per occupant.

Year 1 Target:

• Establish baseline kW/person across classrooms
  
  

• Identify inefficiencies and variability
  
  

Year 2 Target:

• Reduce energy per protected occupant by ≥ 15–25% while maintaining environmental compliance
  
  

5. System Verification & Accountability

KPI 5.1: Continuous Environmental Record Coverage (%)

Measures the completeness of AIR data collection over time.

Year 1 Target:

• ≥ 80% continuous data coverage
  
  

Year 2 Target:

• ≥ 95% continuous data coverage
  
  

KPI 5.2: Evidence-Based Decision Compliance

Measures percentage of interventions initiated based on verified data (NIRET threshold compliance).

Year 1 Target:

• ≥ 85% of actions are evidence-triggered
  
  

Year 2 Target:

• ≥ 95% compliance
  
  

6. Per-Occupant Environmental Protection

KPI 6.1: Verified Safe Condition Coverage per Occupant (%)

Measures the percentage of time each occupant is within verified safe environmental conditions.

Year 1 Target:

• ≥ 70% occupant coverage
  
  

Year 2 Target:

• ≥ 90% occupant coverage
  
  

🔥 KPI Framework Summary

This KPI structure enables:

• Continuous measurement of environmental conditions
  
  

• Direct linkage between system performance and human exposure
  
  

• Verification of intervention effectiveness
  
  

• Quantification of efficiency and accountability
  
  

“These KPIs transform indoor air management into a measurable system where environmental conditions, system performance, and human exposure are continuously tracked, verified, and improved.”