Roberta “Sissie” Roberts Shank
President & CEO

“I love Chas Roberts!  It is wonderful to be a part of a family business, in particular with our team that works so well together – we are like a big family.  Everyone is focused on doing all we can to be the best, and we are energized by the future, and making great things happen.”

Bob Shank
Chief Operating Officer

“I think that the people at Chas Roberts are just great! I’ve been working with many of them since I began at the company twenty years ago, which has given me the opportunity to really get to know people in each of our divisions and offices throughout the state – what I can say is that everyone here really cares. I can’t think of another place that is like Chas Roberts.”

Brad Hall
Vice President of Construction

“I am proud to say I have been an employee of Chas Roberts for over 38 years, following my father’s footsteps, who worked for Chas Roberts for over 40 years! I look forward to coming to work every day, knowing I work for the best company ever, I wouldn’t change it for the world! Thank you Sissie and Bob for letting me be a part of this legacy!”

Jeff Zimmerman
General Manager, Service

Jeff Zimmerman oversees the Retail Service and Warranty Divisions for Chas Roberts. He began his career in the public accounting sector at KPMG then moved to the Home Building sector where he was most recently the Vice President of Land Development for Taylor Woodrow Homes.

Ken Anderson
Plumbing Service Manager

“I have worked for several construction companies throughout my career, and I’ve never seen this type of family atmosphere that we have at Chas Roberts. I truly enjoy working for this company, and I am excited to be a part of the team. We have something very special at Chas.”

Rod Tomita
Vice President of Sales

“I can’t tell you how proud I am to be part of the Chas Roberts team. The team’s commitment to doing things right the first time, are points of pride for each of us. Whether we are working on large production home projects, individual custom homes, remodels, replacements or maintenance, our service technicians, call center and customer service teams truly care about our customer’s satisfaction.”

David Bohnsack
Vice President of Commercial

David Bohnsack serves as the Vice President of the commercial division for Chas Roberts Commercial and M.J. Schneider plumbing & Mechanical. He joined Chas Roberts in March of 2014 as the Commercial Service Manager and assumed the role of Vice President in July of 2014.

With over 35 years’ experience in the commercial and residential plumbing, HVAC and mechanical business, David brings a new aspect to the Chas Roberts Company. David was born and raised in Los Angeles CA, where he met his wife Janet of over 31 years. David was the owner and sole proprietor of a small plumbing business that he expanded and sold. He moved to the Phoenix, Arizona in 1991. In 2005 David and his wife move to the Mid Atlantic area where he worked as a Senior Mechanical estimator, Project manager and Service manager for a large mechanical contractor. He was instrumental in delivering many successful projects in the commercial and government sectors. David obtained his LEED certification in 2014. He and his wife Janet have two daughters. They enjoy traveling, Hiking and spending time with family and friends.

Laurie Barnes
Chief Financial Officer

Laurie Barnes serves as Chief Financial Officer for Chas Roberts Air Conditioning. She joined the company in September 2013 and oversees the finance, treasury management and human resources functions of the Company.

With more than 25 years of experience in finance and accounting, Barnes has worked with a variety of firms including manufacturing, software, homebuilding and land development industries. A graduate of Oklahoma State University, she started her career in public accounting with KPMG. She is a Certified Public Accountant and a Member of the Arizona Society of CPAs. Laurie enjoys various philanthropic activities and outdoor activities including running, tennis and mountain biking.

Karla Smith
Director of Human Resources

Karla Smith, PHR is the Director of Human Resources for Chas Roberts Air Conditioning. She joined the company as the Marketing Director in October 2002 and transitioned to Human Resources in 2004. Karla is responsible for the company’s human resources and payroll functions and plays a key role in developing and implementing the company’s wellness initiatives.

Prior to joining Chas Roberts, Karla worked as the Law Enforcement Torch Run Manager for Special Olympics Arizona. Before that, she was a Project Manager for Valley Metro’s third-party vanpool provider. Outside of Chas Roberts, Karla is a member of the Society for Human Resource Management and the Arizona State Alumni Association.

Stephanie Lammers
Marketing Coordinator

“I am new to the Chas Roberts team, but I absolutely love the work environment here. It’s a great feeling to know you work for a company that treats their homeowners like they would their own family. This is a business practice that is almost unheard of, especially in the construction industry. Chas Roberts is a unique company that I am truly thankful to be a part of!”

Our Proud History in Arizona


Units Installed


Cities We Serve