The article focuses on the elevator system installed by Dave Mirch of DMT LLC for EOS twenty-one residential complex in Alexandria, Virginia. The owner of EOS wanted a reliable, safe upgrade to 16 hydraulic elevators in the residential complex to improve elevator performance. The owner also requested a solution that would add to the value of the complex and increase tenants' satisfaction. Mirch learned that by using the existing hoistways, he could install a new elevator system called KONE's EcoSpace™, a gearless traction elevator.