Mark Nussbaum was an incredible part of our team. He always went the extra mile in helping us find solutions that achieved our goals and met our budget. His extensive experience on historic and new construction projects, allowed us to feel confident in field tested designs and he helped to bring highly qualified vendors to the table to execute these energy efficient designs. Mark’s intelligence, great problem solving skills, work ethic and dedication to getting it right were truly appreciated at every stage of our project. I would highly recommend him.

Beth Raseman
Cultural and Community Center Manager
Barrington White House
Barrington, Illinois

I have collaborated with Architectural Consulting Engineers for the past 15 or so years on projects that range from multistory master plans of historic buildings to a geothermal HVAC system for a historic house. They have always been a pleasure to work with, adhere to sometimes challenging schedules and execute their design in a way that makes my firm always look good to my clients. I love the way that Mark Nussbaum, PE, relates to the hidden personality of the buildings we work on together. He really understands architecture and has a great appreciation for the architects with whom he works. I know that when I am working with Mark the project will be successful and everyone, from the Owner to other consultants and even the contractor ends up being well pleased when the building is built and occupied.

Frank Heitzman, AIA

We turn to Mark when we need a careful hand to install complex systems within unique historic projects. For 20 years we have turned to Mark for well-integrated engineering that enhances historic spaces. We’ve worked with Mark on many high level historic restorations and have never been disappointed. He is conscientious, thorough, and he understands how to seamlessly integrate performance and aesthetics with National Landmark Spaces.

Meg Kindelin, AIA
Principal, Johnson Lasky Kindelin Architects

Mark Nussbaum is a consummate investigator and solution finder; he worked with us to understand the building, its unusual features, and the needs of our visitors, as well as to generate immediate solutions and consider long-term, practical investments in our mechanical systems. I found him patient, inquisitive, and able to offer explanations for novices to experts, without ever making the listener feel unintelligent. He was even happy to help us explain to the public some unique features of our historic property he uncovered. Nothing about what ACE produced was boiler plate. You can tell that the ACE team thrives on investigating one-of-a-kind buildings and discovering how to make them effective spaces for today and tomorrow.

Stacy Klingler, Executive Director
Butterworth Center & Deere-Wiman House

Working with Mark Nussbaum and Architectural Consulting Engineers is a genuine pleasure. Mark is a dedicated professional who will do just about anything to make and keep his clients happy. He is smart and capable and highly devoted to clients. He never goes off duty or off line (Let’s face it emergencies often happen during off hours.) Mark treats all his clients with the same passion, whether their project is big or small. Responsibilities of my job require the care and maintenance of an 1896, National Landmark building, so our mechanical, electrical and plumbing issues are frequent, we can always count on Mark to be there for us and I always look forward to our next project. (And there always is a next project.)

Eden Juron Pearlman, Executive Director
Evanston History Center in the Charles Gates Dawes House
A National Historic Landmark