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Commercial HVAC

Bay City, MI Commercial HVAC

Trusted HVAC Solutions for Businesses Across the Great Lakes Bay Region

At Custom Engineering, we’ve been helping businesses across the Great Lakes Bay Region stay comfortable since 1984. Whether you manage a small storefront in downtown Bay City, a busy office near Saginaw Township, or a large warehouse in Midland, your heating and cooling systems are essential to keeping operations running smoothly.

We offer tailored commercial HVAC services for businesses of all sizes, from system installations and replacements to troubleshooting and maintenance. Our team works closely with local businesses to deliver practical solutions that keep employees, customers, and equipment comfortable throughout Michigan’s changing seasons. 

If you’re planning to upgrade an outdated system or need HVAC support for a renovation or expansion, we’re here to walk you through your options.

Ready to improve your business comfort and efficiency? Call Custom Engineering at (989) 474-2870 or contact us online today for expert commercial HVAC service in Bay City.

Our Commercial Heating & Cooling Services

As a local company, we know how much our community relies on heating and cooling systems to keep things running smoothly through Michigan’s long winters and hot summers. We work with reliable brands like Trane and Mitsubishi Electric and back every installation with a 5-year labor warranty. 

Our services include:

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Custom Comfort, Professional Care

What Makes Us Different?

At Custom Engineering, we will always put you first. That's why so many people in Linwood trust us time and again.

  • Convenient Financing Options

    We make HVAC services manageable with convenient financing options.  Subject to credit approval.

  • Available Nights & Weekends
    No matter when you need us, we're ready to help. Someone is always available to answer your call.
  • Preventative Maintenance Plans
    Keep your system in perfect shape all year round with our programs.
  • Locally Owned & Operated
    As a proud Michigan company, we deliver honest, dependable HVAC services backed by local expertise and care.

Commercial HVAC Installation & Replacement

When it’s time for a new system, whether you’re expanding into a new space or replacing an aging setup, we walk you through the options and help you choose equipment that works well for your layout and daily needs. A well-matched system can lead to more consistent temperatures, better indoor air, and lower energy use over time.

We’ve handled installations across all kinds of commercial spaces, from small shops to large multi-unit buildings. Give us a call today at (989) 474-2870 or contact us online to find out more.

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Trusted by homeowners and Businesses Since 1984

At Custom Engineering, your satisfaction is our priority! See for yourself what our customers have to say about working with us.

    "So grateful to them!"
    I needed help, and Custom Engineering got to me fast and saved the day. Nick, the technician, was great. He was personable and intelligent and he got my repair done super fast. Thanks, Custom Engineering!
    - James T.
    "By far the most professional and reliable company."
    Every employee I have had the pleasure of dealing with has been top-notch. Today's visit by Tyler for annual maintenance was great. He was punctual, friendly, and professional.
    - Michelle G.
    "Custom Engineering took care of us right away!"
    Our initial call was after hours and not an emergency. We received a call first thing the next morning, and they came out within a few hours. Both gentlemen were very professional and knowledgeable, and were able to repair our furnace right then and there.
    - Reid K.
    "10/10 Service!"
    Had Customer Engineering come out to my restaurant to diagnose my furnace and walk-in freezer. Brandon and Skylar, the techs, were amazing. Extremely friendly and knowledgeable. I will be using them for all my HVAC needs moving forward.
    - Taylor A.
    "They have been an excellent company to work with."
    Always courteous & competent. They installed a new furnace, AC, garage gas heater, and ran a gas line into our laundry room. They stayed on the job until all was completed and we were extremely satisfied.
    - Terrance V.
    "This business is the best!"
    We bought our kitchen hood system from them, which they also installed (no small task). They are dependable, efficient, and do great work. Prices are what I would expect for the job. Don't hesitate to hire them.
    - Marinell S.
    "Nick was fantastic!"
    He got our furnace up and running again very quickly (on a Saturday!). Very personable and professional! We will definitely be using Custom Engineering Heating & Cooling again - thank you!
    - Krista W.
    "They did an excellent job - all in one day!"
    I always try to keep my business local, so I called Custom Engineering. They always answered my calls promptly, and the service was friendly with experienced technicians. They were prompt, courteous, and really put my fears to rest. Great job!
    - Debbie M.
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Reliable HVAC Service to Keep Your Business Running Smoothly

At Custom Engineering, we take pride in supporting businesses throughout Bay City, Saginaw, Midland, and the surrounding region. Our licensed technicians provide expert guidance, professional installations, and responsive service to keep your operations running smoothly. Regular maintenance and energy-efficient upgrades help you save costs and maintain a comfortable environment for employees and clients.

Looking for reliable commercial HVAC service in Bay City?  Contact us today at (989) 474-2870 or online to schedule a service and discover how we can keep your business comfortable year-round.

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