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Case study

Northside Office Tower

Replacing twelve rooftop units over six weekends — without a single hour of downtime for 900 office workers.

Aerova technician on the Northside Office Tower roof

The challenge

The building's 20-year-old rooftop units were failing every summer, tenants were complaining and energy costs had doubled in five years. The owner needed a full replacement without disrupting a single working day.

Our solution

We surveyed the roof structure, designed a phased plan and craned new high-efficiency units into place over six weekends. A new building management system now lets the facilities team monitor every zone from a phone.

  • Structural roof survey
  • Weekend-only crane lifts
  • Variable-speed units
  • Remote monitoring (BMS)
Aerial view of the building roof
New ductwork connections

The results

38%

Lower energy use

0

Business days lost

4.1°F

Tighter temperature range

“Our tenants didn't notice a thing until their energy bill dropped. Aerova planned every detail and kept us informed every single weekend.”
Robert KleinFacilities Director, Northside Holdings
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