Global leader in clean air
solution for years

Global leader in clean air solution for years
Case Study

Hospital Filtration Survey Results in Improved Air Quality

Customer Profile

Cardiovascular Hospital

  • One of the Nation’s Top Cardiovascular Hospitals
  • 595-Bed Hospital System
  • 3 Separate Campuses
  • Air Handling Units Ranged From 2 to 30 years of service



IAQ Improvement for Hospital

Significant improvement in the indoor air quality in the complete hospital system, while staying within budgetary constraints.

Challenges 1 – Improvement of IAQ

Challenges 2 – Budgetary constraints

Challenges 3 – Old air supply equipment (Air handling unit)

  • The AAF Solution started with an Air Filtration System Survey performed by AAF that revealed the need for improvements, particularly in the older AHUs.
  • The hospital system decided to upgrade all three campuses to AAF’s MEGAcel I HEPA filters for the critical areas of the hospitals (ER, Surgery, ECU).
  • The hospital also decided to upgrade patient care and non-critical areas to AAF’s VariCel VXL filters. PerfectPleat® HC M8 filters were utilized as prefilters.
  • Once the MEGAcel I filters were installed, a particle count test was conducted in the AHU system. This test measured the amount of particulates in the system upstream and downstream from the newly installed MEGAcel I filters, compared to the MERV 14 filter particle count results.
  • Particle count tests verified the dramatic improvement to the hospital’s air quality –
    • 96% reduction in 0.3 µm downstream particles
    • 98% reduction in 0.5 µm downstream particles

Recommended Product & Solution


Clean air is vital in hospital and healthcare facility operations to protect patients, staff and visitors from airborne diseases and infections, as well as to provide a comfortable, healthy and odour-free environment.


Indoor Air Quality (IAQ)

Indoor Air Quality (IAQ) is a term that refers to the air quality in your building, breathed in every day by the building’s occupants. The pollution levels in indoor air can be up to 5 times higher than outdoor levels, and people spend more than 90% of their time indoors.


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