Our Services

We are South Eastern Michigan’s Trusted Source for HVAC Installation, Maintenance and Repairs

Open 24/7 - Available

Emergency repair services 24 hours a day, seven days a week.

Quality Service at Affordable Prices

We offer100% satisfaction guarantees on all of our services.

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Your Temperature Experts
We are a trusted source of AC and heating maintenance repairs company

Unmatched performance, satisfaction service guarantees

Home protection through our shoe covers and mats

Upfront, flat rate pricing—no overtime charges

24 / 7 availability for all emergency services

Fixed right promise—top notch customer service


We offer reliable, round-the-clock emergency HVAC services to ensure your home or business remains comfortable and secure. Our skilled technicians are prepared to handle a variety of urgent HVAC issues

Our Services
Customer Service is Job #1

We Provide Fast, Reliable Heating and Air Conditioning Services in Macomb and Oakland Counties and Their Surrounding Areas.

HVAC Design and Installation

Our expert technicians meticulously plan every detail of the HVAC system, ensuring seamless integration without compromising the aesthetics of your space. Upon finalizing the design, our skilled installation team works diligently to install your new HVAC system with precision and care, ensuring it operates at peak performance from day one.

Water Heater Repair & Service

Koz Heating & Cooling takes pride in being the trusted water heater specialist for many. When you reach out to us, we’ll promptly schedule your service appointment. No matter the fuel source or type of water heater you own, it will never pose a challenge to our skilled team.

Indoor Air Quality

Our team is dedicated to addressing your specific needs, offering expert advice and services to enhance the quality of your indoor air, ensuring a safer, cleaner, and more comfortable living or working environment.

Ductless Mini-Split Systems

Ductless HVAC systems offer a perfect solution for homes without ductwork or for rooms that the main AC system cannot reach.

Air Conditioner Replacement & Repair

Whether your system is failing to cool effectively, making unusual noises, or has stopped working altogether, our skilled technicians diagnose the issue promptly and provide the most efficient repair options.

Furnace Repair & Replacement

When your furnace shows signs of malfunction, such as uneven heating, strange noises, or a complete breakdown, our experienced technicians swiftly diagnose and address the problem.

Commercial HVAC

Each of our commercial HVAC specialists is a seasoned expert, well-versed in maintaining the most intricate of commercial equipment.

Boiler Service

With years of expertise in maintaining hydronic heating systems, Koz Heating & Cooling has become a reliable HVAC provider in the Macomb and Oakland County areas.

Navien Tankless Water Heater Installation, Maintenance & Repair

Tankless water heaters, also known as on-demand water heaters, provide a solution for homes lacking sufficient instant hot water access.

Reasonable Rates
Great Service at a Great Price

We’re On Call 24/7 to React Promptly to Your Service Needs, Don’t Hesitate to Call.