View this video of how a 23,542 square foot commercial office located in Bethesda, Maryland have pursued a series of comprehensive energy efficiency upgrades, including the replacement of their HVAC system with a new energy-efficient 120-ton rooftop HVAC unit. With all replacements undertaken, the property’s average annual energy consumption savings is projected at 145,000 kWh per year, furthering the building’s legacy as ENERGY STAR Certified.