Mark of the Z Heating, Ventilation, Air Conditioning and Duct Work Residential, Light Commercial and Manufacturing
Mark of the Z Heating, Ventilation, Air Conditioning and Duct Work        Residential, Light Commercial and Manufacturing

Our Business

Mark Zimmer Owner and Deb Zimmer Secretary

Mark Zimmer Owner:

In 1984, Mark Zimmer started his own HVAC service and installation company. Specializing in custom duct work fabrication. Soon his reputation became known as the go to man for Heating and Cooling needs in the Newaygo area. Investing in more sheet metal fabrication equipment and hiring on employees he soon found out he needed a name for his business besides Mark Zimmer Heating. After a lot of thought about a unique name, his father in law came up with the name, Mark of the Z Heating.  His father in law said, "You do good work and people know it, so when you do a job they know it is a Mark of the Z"


Thus, the name became Mark of the Z Heating. With Mark in a cape with a Z on it for a Company Logo.


In 1986 Adama Heating was purchased by Mark. Adama Heating was located out of Newaygo, MI and had been serving the area for decades. Adama Heating was a full service Mechanical Contractor providing Plumbing, Heating, Ventilation, Air Conditioning, Refrigeration and Electrical Service and Installation.  Mark knew the Owner Rich Adama whom at the time was looking to retire. After the buy out was complete Mark only was interested in the Heating and Air Conditioning side of the company and did not pursue the Plumbing, Electrical and Refrigeration Market.


Mark has won several awards for AirQuest Dealer of the year.


When asked, "what it takes to run a good service business? " Mark responds with, "when you take care of your customers, they will take care of you."


Mark has a Wife Deb whom is the Secretary of the business, 4 children Skye, Brooke, Cole (Mechanical Contractor) and Markie, as well as 3 Grandchildren Kamden, Kolton and Remington.



Cole Zimmer (Mechanical Contractor):

Cole is a Licensed Mechanical Contractor. Who's main tasks are to assist in the daily operations of the company. Cole has his Bachelor's Degree in HVACR Engineering Technology and Energy Management as well as an Associate's Degree in HVACR Technology from Ferris State University. He has had a background in HVACR since, childhood working for Mark of the Z. Cole also did an internship at Johnstone Supply working with their Technical Advisors and Design Staff.  At a young age of 21 he tested and passed the State of Michigan Mechanical Contractors Licensing tests. Cole is also CSD-1 Certified for Commercial and Industrial Boilers. As well as having a background in: Commercial and Industrial Ventilation Equipment, Commercial Controls, Test and Balance and Fire Suppression. Cole's education and background make him an all around knowledgeable staff member of Mark of the Z.



Ben Kramer (Project Manager). 

Ben has his Bachelor's Degree in HVACR Engineering Technology and Energy Management from Ferris State University, an Associate's Degree in HVACR Technology from Ferris State University, and a certificate in Welding from a career tech center. Ben is also NATE Certified.


Ben worked with Mark of the Z performing service and install work throughout college. After graduation he moved to Tennessee to perform Building Automation Controls on Commercial and Industrial buildings. Ben also worked as a Project Manager for large scale commerical and industrial; Mechanical, Plumbing and Building Automation installation.


Ben lives in Rockford, MI.



Since 1984, Mark of the Z Heating has been a family owned business.  Mark of the Z heating works all throughout West Michigan.


Mark of the Z Heating






AirQuest Heating And Cooling Equipment
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