
Bay City Ductless Mini-Split Services
Efficient Climate Control Solutions in Saginaw, Bay & Midland Counties
Looking for a smarter way to keep your home or business comfortable year-round? Ductless mini-split systems are an excellent solution, offering unmatched energy efficiency, flexible installation options, and precise temperature control. Whether you want to heat or cool a single room or your entire space, these systems deliver reliable comfort without the need for extensive ductwork.
Ideal for both residential and commercial spaces, our ductless mini-split systems in Bay City eliminate the need for bulky ductwork, offering a discreet and modern alternative to traditional HVAC installations. Say goodbye to sky-high energy bills and hello to streamlined comfort tailored to your needs.
Explore how a ductless system can make your space more comfortable and efficient by calling us at (989) 474-2870 or filling out our online contact form today!

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.
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Affordable Financing OptionsWe make HVAC services affordable with financing options offering 0% interest for 72 months.
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Available Nights & WeekendsNo matter when you need us, we're ready to help. Someone is always available to answer your call.
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Preventative Maintenance PlansKeep your system in perfect shape all year round with our programs.
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Locally Owned & OperatedAs a proud Michigan company, we deliver honest, dependable HVAC services backed by local expertise and care.
Understanding Ductless
A ductless mini-split system works by using two main components: an indoor air-handling unit and an outdoor compressor. These units are connected by a small conduit that houses the power cable, refrigerant tubing, suction tubing, and a drain line. The outdoor compressor pumps refrigerant through the tubing to the indoor unit, where it absorbs heat from the air inside the room. The heat is then released outside, cooling the indoor space. During colder months, the process reverses to provide heat. This system operates without ductwork, making it energy-efficient and ideal for targeted climate control in individual rooms or zones. Its compact design and quiet operation add to its appeal, offering versatility and comfort.
Should I Get Mini-Splits or Central Air?
Deciding between a mini-split system and central air involves considering your unique needs and space configurations. While central air provides a uniform temperature throughout your space, mini-split systems offer greater flexibility and zone control options. Inhabitants with distinct comfort preferences or varied usage patterns will benefit greatly from the customizable nature of mini-splits. Reach out to Custom Engineering for expert advice on the best solution for your situation.


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.
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We went through custom engineering for replacing our furnace and air conditioner. They went above and beyond to do what is best for our home. The whole team was respectful and informative. They answered any questions we had!- Allison E.
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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.
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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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Chaz did an amazing job - straightforward and very helpful. Jason and Trey set up the furnace a week ago, and it runs amazingly! It's nice to stay warm again. They just repaired and replaced my bathroom exhaust fan, too. Thank you again!- Cesily W.
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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.
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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.
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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.
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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.
Choosing the Right Size Mini-Split
Selecting the correct size mini-split system is crucial for ensuring its effectiveness and efficiency. Our professionals at Custom Engineering will assess your space to determine the optimal system size, considering factors such as room dimensions, insulation levels, and usage patterns. Proper sizing minimizes energy consumption and enhances performance, ensuring lasting comfort for you and your loved ones.
Benefits of Ductless Mini-Split Systems
The benefits of installing a ductless mini-split system are numerous.
Property owners who install ductless mini-split systems can:
- Save on energy costs thanks to high energy efficiency. Ductless mini-split systems use advanced technology to consume less energy, often reducing utility bills.
- Enjoy flexibility and customizable comfort with zoning capabilities. Each unit operates independently, allowing you to set different temperatures for individual rooms or spaces.
- Experience whisper-quiet operation as these systems are designed to minimize noise, ensuring a peaceful and undisturbed environment.
- Simplify installation with a ductless design that eliminates the need for costly and invasive ductwork. This makes it an ideal solution for older homes or remodels.
- Reduce negative environmental impact with eco-friendly refrigerants and energy-saving components, helping lower your carbon footprint.
- Eliminate hot and cold spots often caused by ductwork inefficiencies, as each unit provides targeted heating or cooling.
- Easily manage comfort in tricky spaces like converted attics, basements, sunrooms, or home additions where extending ductwork might be difficult or impossible.
- Take advantage of rebates and incentives with many utility companies offering financial benefits for installing energy-efficient ductless mini-splits.
Contact Us for Your Mini-Split Solutions Today
Our Bay City ductless mini-split service team is committed to providing expert guidance and solutions to enhance your comfort and efficiency.
Get in touch with Custom Engineering today to explore installation, maintenance, and replacement options that fit your needs. Call (989) 474-2870 or contact us online to take the first step towards superior climate control.