Many owners of older buildings today are faced with inefficient, worn 25- to 30-year old hvac systems. They can be costly and time-consuming to replace.
Linton Towers, a 20,000-sq.-ft., three-story office building in Denver, houses insurance agencies and real estate agents, among their tenants. The building had two multizone units on the roof. They were classic 1970s vintage multizone units, simultaneously running one stage of mechanical cooling and one stage of gas-fired forced air heat. Typical of multizone units, they were mixing heated and cooled air to satisfy the varying requirements in each zone - an unnecessary waste of energy.