Historic Structures

Our experience in the study, analysis, and renovation of historic and significant buildings is considerable. We enjoy finding solutions that provide the comfort, safety, and efficiency of current technology but respect the historic fabric of the building.

Hotel FlorenceHotel Florence

The Hotel Florence is part of the Pullman Historic Site. It is a National Historic Landmark and a City of Chicago Landmark.

Our work to restore this venerable building included a:

Historic Structures Report

New expandable electrical service

New variable volume hot water heating system

New plumbing and high efficiency hot water heating


A nationally significant structure designed by America's most recognized architect, Frank Lloyd Wright.

Originally designed and built as a residence for Herbert F. Johnson, our energy work included a:

Historic Structures Report.

Mechanical system renovation with:
State-of-the-art variable volume air and water flow systems

Air-to-air heat exchangers

Environmentally-friendly geothermal cooling.

A new 16 kilowatt photovoltaic array