Garage Ventilation System Achieves 95% Energy Savings

June 15, 2015 By Linda Hardesty

NES ControllerNagle Energy Solutions (NES) says its digital garage ventilation system reduced consumption by more than 61,300 kWh at the Pacific Terrace apartment building in San Francisco, and the savings represents a 95 percent decrease in the energy consumed by the property’s garage ventilation equipment.

Power measurements by NES showed that prior to the retrofit, the Pacific Terrace garage ventilation system consumed about 64,600 kWh per year at a cost of $16,330 – including daily peak demand charges incurred due to running its 10-horsepower garage fan motor continuously. The NES system reduced kWh consumption by more than 61,300 kWh – a 95 percent savings – all while maintaining a 24/7 garage fan runtime schedule.

The total installation and commissioning cost of the system was $18,400. The savings cut the apartment building’s annual utility bill by more than $15,300. Engineers for the regional utility verified the energy savings captured by the NES garage demand-control ventilation (DCV) system, issuing a $5,900 rebate to the property owner for the energy savings.

NES installed its digital FG-20 garage ventilation system at Pacific Terrace. Unlike the NES TR Series of controllers, which incorporate a Niagara programming framework suited to large-scale projects, the NES FG-20 controller incorporates EasyIO’s Sadona programming framework, which NES customizes to serve as a “stand-alone” DCV system for small- to medium-sized commercial garages.

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