Our products are reliable and built to last, making your comfort our top priority. 

HVAC Products & Services

Bonded, Insured, and Licensed


As a Trane dealer with a wide variety of products to choose from, we can keep your family healthy and comfortable all year. We carry a complete line of indoor comfort equipment with innovations that raise the standards of comfort and reliability, including air conditioners, heat pumps, gas furnaces, programmable thermostats, humidifiers, ductless split systems, geothermal systems, air cleaners, ultraviolet lights, ventilators, and zoning products.


We are service professionals! As licensed contractors and specialists in the field of heating and air conditioning, we have the tools, equipment, and experience to keep your equipment running smoothly all year long. If it is an emergency service that you need, we are available to assist you 24/7! We offer service agreements to help reduce service emergencies to keep your comfort system running at peak performance.


The Trane Comfort Specialist™ certification means we are of the highest standing and committed to being the best in every aspect of our business, from installation and service to customer satisfaction and employee training.

Not every dealer qualifies as a Trane Comfort Specialist™, but rather only those that meet Trane’s stringent standards and demonstrate a commitment to customer satisfaction and continuing education. We are committed to training to keep up to date with Trane’s latest technology, ensuring that you receive a system that is designed to achieve maximum efficiency, reliability and comfort – and a system that delivers the efficiency its ratings promise and you expect.


\The Better Business Bureau (BBB) system in the U.S. extends coast-to-coast across the nation, in Hawaii, Alaska, and Puerto Rico. Since the founding of the first BBB in 1912, the BBB system has proven that most marketplace problems can be solved fairly through voluntary self-regulation and consumer education.


We are heating and cooling professionals! We maintain a high level of quality among our staff. All of our installers and technicians are trained regularly. 


We have been a trusted source for the Tri-City Area and surrounding communities since 1984.

Fair Prices

At Custom Engineering, we know you don’t always have time to plan for new equipment. We offer fair pricing and financing options.

Fast & Responsive

Call us 24/7 for your emergency needs! Your comfort is our goal.

Satisfaction Guaranteed

We like happy customers. Period. If you aren’t fully satisfied, we want to hear from you!


Our Furnace went out on a Sunday night, I didn’t know but Custom Engineering Heating and Cooling would have come out even on a Sunday night, so I called Monday morning Service Tech showed up before noon. Determined problem within 30 min on a furnace he never seen before at any time. We decide to order new furnace cause parts obsolete, our furnace over 60 years old wood and coal furnace converted to gas. We hope to get one in a week or so, but they had one in stock and installed next day Monday. We also decided to get ac that was completed on Tuesday and they hauled the old furnace away that had to be cut apart to remove from our basement. Thanks again. I would definitely recommend them.

Derrick Wetters

Joe was very professional on the phone. He was helpful and got us scheduled quickly. Thank you.

Chaz was great!! Showed up on time, took care of our issue, and explained what he did. was extremely knowledgeable, polite, professional.

Will use them again when I have an issue!

-Tim Reed

New furnace and ac installed in a day and a half
Jason Reid was absolutely awesome great technician knowledgeable professional and hard worker
We are very happy with the installation and the care we received from the company
Highly recommend them

-Elke Burzynski

When I discovered my furnace wasn’t working Chaz was here right away to diagnose and fix the problem. He was very professional and I will recommend him to everyone! Thank you again!!

-Denise Boman

Absolutely outstanding! We called them at 7:30am after finding out our furnace had gone out overnight and they had a tech their before 10am. Chaz, was SO amazing! Not only was he extremely professional but missed their office party to personally pick up our part and come install it before the end of his shift so we would have heat over the weekend. I cannot recommend them enough! Additionally, pricing was extremely reasonable and appropriate!

-Jordan Fournier

I can’t say enough positive things about my experience with Custom Engineering! Our furnace went out in the coldest time of early February & they responded immediately to us. Not only were they out to our house within two hours, they loaned us heaters when it was determined we would need a new furnace. They had the new furnace in stock and were back out to install it right away. Our dead furnace was old and a bit crazy to deal with, the guys were so professional, and worked all day until they had everything done to perfection and the old “octopus” like furnace gone and cleaned up! We had heat and it was amazing how much better it worked in our house! LOL Custom Engineering didn’t try to “up sell” anything, we had just what we needed and it has been great. Would recommend anytime!

-Lara Sullivan

Contact Us

Our expert HVAC technicians are ready to help you with your heating and cooling needs. Request an appointment today!

(989) 697-3444

990 S Huron Rd, Linwood, MI 48634

Hours: Monday - Friday, 8 am - 4 pm

24/7 Emergency Service

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