Ventilation Retrofit Case Study: Reducing and Balancing Exhaust Ventilation Flow

This case study gives an overview of ventilation systems and the retrofit commissioning done on the systems in a 14 story residential high-rise. The retrofitting resulted in energy savings of $5,535 with a payback of 6.2 years. The positive outcome extended beyond energy savings. The property management was motivated by the energy savings and payback, as well as other performance improvements such as:

  • Better ventilation throughout the building
  • Reduced odor transfer
  • Reduced humidity, resulting in less frequent painting
  • and caulking at turnovers
  • Lowered upkeep costs associated with fan belt
  • replacement and unclogging inlets
  • Reduced fan noise

The building management’s primary drivers to perform this evaluation were resident comfort and operation costs associated with troubleshooting ventilation. They had received complaints from residents regarding odor issues, and building maintenance staff had recently investigated multiple ventilation issues in the building. The ventilation retrofit resulted in balancing and distribution modifications that improved the system effectiveness. These modifications also yielded difficult-to-quantify operational savings and added value to the apartment units by improving air quality.

Full Case Study (PDF):
Ventilation Retrofit Case Study: Reducing and Balancing Exhaust Ventilation Flow