
Bay City Heat Pump Services
Comprehensive Heat Pump Services in Bay City, MI
If you're thinking about upgrading your home's heating and cooling setup, a heat pump might be exactly what you need. These systems handle both heating and cooling in one, providing a reliable solution throughout the year. At Custom Engineering, we’ve been helping families in Bay City, Saginaw, and Midland stay comfortable since 1984, offering solutions that fit the way you live here in Mid-Michigan.
Our heat pump solutions are tailored specifically to manage the unique climate demands of Bay City, where winter temperatures can plunge below freezing, and summer days can become hot and humid. Our team is adept at providing systems that ensure efficiency and endurance throughout these seasonal fluctuations. Using local insights, we can advise on energy regulations and make sure your system complies with Bay County's environmental standards, ensuring both performance and sustainability.
Whether you’re dealing with icy January nights or muggy July afternoons, we offer heat pump installation, repair, and maintenance that’s designed for our local climate. From quick fixes to full replacements, we’ll talk you through your options and help you find something that fits your space, budget, and goals.
Need a new heat pump or repair? Call (989) 474-2870 for our team to assess your situation and schedule same-day or emergency service when available.

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.
Our Heat Pump Services
Heat Pump Installation
We provide professional heat pump installations using trusted brands like Trane and Mitsubishi Electric. Each installation includes a free estimate and a 5-year labor warranty for peace of mind.
Our team considers your home’s size, layout, and local weather patterns to ensure optimal system efficiency and performance. A properly installed heat pump improves energy efficiency, reduces utility costs, and enhances your home’s long-term value.
Heat Pump Repairs
If your system is blowing cold air or making unusual noises, our team offers emergency and same-day repair services when available. We diagnose issues thoroughly to fix current problems and prevent future ones.
We also provide guidance on simple preventive steps, such as filter replacement and outdoor unit maintenance, to keep your heat pump operating smoothly year-round.
Preventive Maintenance
Seasonal tune-ups extend the lifespan of your heat pump and prevent major breakdowns. Our maintenance program includes inspection of coils, motors, refrigerant levels, and other critical components.
Regular maintenance maximizes energy efficiency and ensures consistent comfort, even with Michigan’s fluctuating temperatures. Scheduling tune-ups at least twice a year prepares your system for seasonal demands and helps avoid unexpected failures.


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 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 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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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.
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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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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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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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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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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.
Our Trusted Brands
We work with brands we trust and that our customers love.
- Trane - Known for strong performance and long-lasting durability. A great fit for homeowners who want consistent, dependable comfort throughout the year.
- Mitsubishi Electric - These ductless systems are flexible, energy-efficient, and ideal for properties with limited space or specific rooms that need heating or cooling, like sunrooms, garages, or additions.
Whether you're looking for a traditional whole-home solution or something more targeted, we’ll help you explore both options and figure out what works best.
Choosing the right brand for your heat pump installation can significantly impact your system's reliability, efficiency, and overall satisfaction. Trane, for instance, prides itself on innovation and has been a leader in the HVAC industry for decades, making it a trustworthy choice for those who prioritize cutting-edge technology and robust system performance.
Mitsubishi Electric, on the other hand, excels in providing versatile ductless solutions that can be adapted to various room configurations and usage patterns. This flexibility is invaluable for homes seeking to optimize zoning or address specific heating and cooling challenges within their existing architecture, ensuring that every area of the home is comfortable without significantly altering the existing framework.
What It’s Like to Work With Custom Engineering
As a family-run business serving Bay City and surrounding counties since 1984, Custom Engineering has earned a reputation for honesty, reliability, and personalized service. When you contact us, you’ll speak with a knowledgeable team member who understands how Michigan weather affects heating and cooling systems. We explain your options clearly and help you choose the best solution for your home, lifestyle, and budget.
Flexible Financing Options
Investing in a high-quality heat pump doesn’t have to strain your budget. We offer financing through Michigan Saves and Wells Fargo, including 0% interest options for qualified customers.
With our financing plans, you can:
- Spread payments over time without added interest (for qualified customers)
- Access energy-efficient solutions that fit your budget
- Customize a plan that works for your household
Ready for a new heat pump installation or repair? Contact us today at (989) 474-2870 or online to book an appointment or ask about financing options. We're here to help when you need us.