Air Conditioning

Proudly Serving Bay City and the Surrounding Areas

Bay City AC Services

Stay Cool with Dependable AC Solutions in the Great Lakes Bay Region

When summer hits Bay City, Saginaw, or Midland, no one wants to be stuck sweating indoors. Whether you’re trying to keep an older system running a little longer or considering upgrading to something more efficient, we’ve been helping folks across the Tri-City area stay comfortable for over 40 years.

We offer a full range of air conditioning services, from repairs and replacements to seasonal tune-ups and brand-new installations. As a local company based in Bay City, we understand how unpredictable Michigan weather can be. One day it’s cool, the next you’re cranking the AC.

Our team will explain your options, provide a free estimate on installations and replacements, and back our work with a 5-year labor warranty. Our commitment is to work closely with you, ensuring you have the best cooling solutions tailored to your specific needs. Being locally owned means we're part of your community, and we aim to foster long-term relationships with our customers, emphasizing trust and transparency throughout every interaction.

Need air conditioning service in Bay City? Call Custom Engineering today at (989) 474-2870 and schedule an appointment.

What We Offer: AC Installation, Repair & Maintenance

AC Installation & Replacement

If your current system isn’t keeping up or you’re ready to upgrade to something more efficient, we’re here to help. We install both central air systems and ductless Mitsubishi Electric mini-splits, depending on what fits best in your home. We’ll walk through your options, provide a free estimate, and help you choose a setup that suits your budget, layout, and cooling needs. In addition, our installations are performed with meticulous attention to detail, ensuring that your new system operates at peak efficiency and integrates seamlessly with your home's existing infrastructure.

AC Repairs

No cold air? Weird noise? High humidity indoors? We can take a look, diagnose the issue, and get your system running right again. Call us anytime, and we’ll walk you through the issue, helping you decide if it needs urgent attention or if you can wait for a scheduled visit. Our repair process includes a thorough inspection and testing to ensure we identify not just the symptoms but the root cause of any problem, restoring your comfort swiftly and reliably.

Seasonal AC Maintenance

Preventive maintenance keeps your AC running smoothly when you need it most. A typical visit includes filter replacement, refrigerant checks, coil cleaning, and a system check to keep performance and efficiency in top shape. It’s also the best way to avoid surprise breakdowns during a heat wave. Routine maintenance extends the life of your system and helps maintain energy efficiency, saving you money on utility bills while ensuring consistent performance year after year.

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Why Choose Custom Engineering?

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.

Custom Comfort for Every Season

Our Cooling Services

Energy Efficiency & Indoor Comfort

High-Efficiency AC Units

We offer energy-efficient systems with high SEER ratings that help reduce your energy use without sacrificing comfort. Better efficiency can mean lower utility bills over time, whether you're cooling one room or the whole house. Investing in a high-efficiency unit not only supports your immediate comfort but also contributes to long-term savings and environmental sustainability, aligning with growing eco-conscious consumer priorities.

Programmable Thermostats

Adding a programmable thermostat can help you get more control over your indoor climate, cooling when it matters, and saving when it doesn’t. We can help you choose and install a model that works well with your system. By optimizing your cooling schedule, these thermostats can contribute to greater energy savings, providing a detailed overview of usage patterns for smarter energy management.

Indoor Air Quality Solutions

Good air conditioning isn’t just about temperature. It also supports clean, breathable air. We offer air purification and filtration options, including whole-home solutions that reduce allergens, pollutants, and dust. These are especially helpful in older homes or households with allergy concerns. Ensuring high air quality contributes to overall wellness and comfort, making your home a healthier environment year-round.

How to Know When It’s Time to Replace Your AC

Recognizing the signs of a failing AC system can help you avoid emergency breakdowns and reduce long-term costs. Here’s when you should consider upgrading:

Frequent Repairs – If repair costs are stacking up, a replacement may save more in the long run.
High Energy Bills – Older systems use more energy; newer models offer better efficiency and lower monthly costs.
Inconsistent Cooling – If some rooms are too hot while others are freezing, your system may be undersized or struggling.
System Age Over 10-15 Years – Older systems lose efficiency over time. Newer units offer better technology and warranties.
R-22 Refrigerant Use – Older systems with phased-out refrigerants can’t be serviced affordably anymore.

If you're noticing any of these issues, we’ll help you evaluate your current setup and make informed decisions about repair vs. replacement.

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Financing Options Available

Get your project completed on time without having to worry about costs. We've teamed up with Wells Fargo and Michigan Saves to bring you financing options that fit your life. Subject to credit approval.

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Choosing the Right AC System

No two homes or properties are exactly alike, so your cooling system should be tailored to your space.

We’ll help you think through:

Size and layout of your home: Ensure efficient cooling by selecting a system that matches the specific dimensions and configuration of your property.
Insulation and airflow: Analyze existing insulation and airflow patterns to optimize your cooling solution for effectiveness and efficiency.
Ductwork condition or lack of ducts: Whether improving existing ductwork or choosing a ductless solution, we ensure compatibility and peak performance.
Energy-efficiency goals: Align your choice with personal sustainability objectives and potential long-term cost savings.
Budget and financing options: We help balance upfront costs with financing options to meet your financial comfort.

Whether you’re looking at a traditional central air setup or considering the flexibility of a Mitsubishi Electric ductless mini-split, we’ll help you compare the pros and cons based on your home. Our comprehensive assessment will ensure you have the information needed to make the best decision for prolonged comfort and value.

Let’s Talk About Your AC Needs

Whether you’re ready for an upgrade or just have questions about how your system is running, we’re always happy to discuss it. Call us today for a free estimate on installations and replacements. We offer personalized advice based on your specific cooling needs, ensuring you have a clear plan forward that maximizes efficiency and comfort without exceeding your financial boundaries.

Experience the Custom Engineering Difference

At Custom Engineering, we prioritize your comfort with trusted service and honest advice. From maintenance to full system upgrades, our experienced team delivers reliable results every time.

Check out our reviews to see why Bay City homeowners count on us for prompt, professional air conditioning solutions.

Need a new AC system or repairs in Bay City? Call (989) 474-2870 or contact us online to schedule AC service in Bay City, Saginaw, Midland, or nearby. We’re always here to help.

View All Reviews

"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.
"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.
"They really came through!"
Quick, efficient, and friendly service from both office staff and techs. Fair pricing. Grateful for their help on a freezing day when our furnace failed. Feared the worst. Highly recommend this company!

- Tammie S.
"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.
"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.
"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.
"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.
"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.

Contact Custom Engineering Today!

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