Next month is D-Day for the Glessner House in Chicago – D for Dig. The much-awaited installation of the building’s new geothermal system is about to begin! Engineers from ACE (Architectural Consulting Engineers) are putting the finishing touches on the design for the new system, which will be state-of-the-art in terms of energy efficiency and performance. Although the Glessners’ 1887 house was visionary for its time, its owners could scarcely have foreseen that air conditioni