About All Seasons Heating & Cooling

All Seasons Heating & Cooling has been serving Midland families for over 40 years. We are family owned and operated by Mark and Paul Kohtz. Jeff Kohtz began the business in 1979 by providing professional sales as well as heating and cooling repairs and installations for the Great Lakes Bay Region.

All Seasons Heating & Cooling offers heating,  cooling, and  indoor air quality products and services. Our heating and cooling experts can evaluate your home and help you choose the most efficient  system. We also offer replacement or repair and complete full-service inspections of HVAC systems.

Why Choose All Seasons?

Honest Maintenance Plans

Up Front, Honest Pricing

Satisfaction Guaranteed

Properly Trained Staff

Family Owned For 40 Years

Our Core Values


We are committed to being transparent in all endeavors and correcting errors. We will take responsibility for our actions, and commit to learning from them. We will utilize participation, evaluation and feedback.


We care about our community; our customers and our team are extremely important. We are dedicated to protecting not only the health & mechanical safety of the community but also the cleanliness of our work spaces ensuring they are free of debris and hazards when we leave.

Highest Quality 

We strive to offer the highest quality experience in home service-from the initial customer service communication, the service options, the sales consultation and the workmanship of the install process. Our ultimate goal is to give the customer the “unattainable” 6 star review.

Continuous Improvement 

We are home services professionals committed to being lifelong learners. We continue to learn through our weekly team training sessions, educational workshops, and individualized classes specific to our roles. Our company will continue to investigate and invest in new technology. We also commit to refining our processes and procedures to make our skill more precise.

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