Portland, OR / 850,540 SF
The 850,540 square foot Montgomery Park is a commercial building in Portland, Oregon, housing approximately 26 tenants with about 3,000 people occupying the building during an average workday. Work included condenser pumps, supply fan VFD’s, and variable fan speed (Catalyst) on all large tonnage heat pumps. Through bill savings from the lighting upgrades and Energy Trust cash incentives, Montgomery Park was able to overhaul the building’s HVAC system with no additional capital expenditures. An engineering study recommended replacing aging infrastructure equipment with two new cooling towers and heat exchangers with 25% greater capacity, and adding two, 100 –horsepower VFD-controlled condenser pumps. As a result of the building control and HVAC upgrades facilities staff can now turn off non-essential HVAC units when the building is closed or when a suite is not occupied.
Montgomery Park is saving an estimated 2,475,000 kWh annually and approximately an annual cost savings of $418,000. Since 2010, energy consumption has dropped from an average 1.3 million kWh per month to 0.9 million kWh—a 33% decrease.