AC Installation & Replacement in Bay City, MI
Trusted AC Installs from Custom Engineering That’s Been Around Since 1984
Thinking about replacing or adding AC to your property? We’ve been helping folks in Bay City, Saginaw, and Midland stay cool through Michigan’s sticky summers since the mid-80s. We've worked with all kinds of setups and layouts, from historic homes near downtown Bay City to commercial spaces and newer properties in Saginaw Township.
At Custom Engineering, we install reliable central air systems and ductless Mitsubishi Electric mini-splits, depending on what best suits your property and budget. If you're unsure where to start, no worries—we’ll walk you through your options and help you choose what works best for your space.
Contact us today at (989) 474-2870 or online and get a free AC installation or replacement estimate.
Custom Comfort, Professional Care
What Makes Us Different?
At Custom Engineering, we will always put you first. That's why so many people in Bay City 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.
Choosing the Right System for Your Property
Having the right AC system for your space depends on a few key things.
We’ll help you compare models based on:
- Size and cooling capacity for your square footage
- Noise levels that are important for bedrooms or living spaces
- SEER ratings, which tell you how efficient the system is
- Optional features like zoning or Wi-Fi thermostats
Whether you're looking at a ductless setup in a bungalow or a full central system for a larger property, we’ll guide you toward something that fits your space and your budget.
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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"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.
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"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.
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"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.
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"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.
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"My experience with the company was great!"Chaz went above and beyond! He fixed my main house furnace and also advised me on my ceiling-mounted furnace in my back building. Thank you for your quick response. I will use you again!- Ann K.
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"I don't know what I do without this company!"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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"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.
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"They did a great job!"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.
Save Energy, Save on Cooling
Newer AC units are built to be more energy-efficient than older models, which means they can help lower your cooling bills over time, especially during those hot and humid Michigan summers. Many of the systems we install are ENERGY STAR® rated. And if you're looking for a more flexible way to pay, we offer 0% financing through Wells Fargo for qualified homeowners.
Should You Repair or Replace Your AC?
Sometimes a system can be fixed, but sometimes replacing it just makes more sense. If your AC has been acting up, here are a few signs that it might be time to consider an upgrade:
- Repairs are becoming more frequent or costly
- Cooling is uneven or unreliable from room to room
- Your energy bills keep climbing
- The system is over 10–15 years old
We’ll evaluate your current unit and help you weigh the options, without pushing you one way or the other.
Warranty & Support You Can Count On
We take pride in our work and are always here to assist you. All installations come with a 5-year labor warranty for peace of mind. If something doesn’t seem right after installation, you’ll talk to a real person when you call us at any time of day. We’re available 24/7 to help troubleshoot and walk you through the next steps if needed.
Call (989) 474-2870 today or contact us online to schedule your free estimate for AC installation or replacement in Bay City or nearby areas.