Otto A. Trzos
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Otto A. Trzos
Call us today for a free replacement estimate and take advantage of system rebates and tax incentives. We are a third generation family owned and operated business proudly located in Keego Harbor serving southeastern Michigan since 1945. Otto founded the company and worked tirelessly until his passing in 1995.

His son and daughter-in-law, Phil & Joyce, now run the operations along with their daughter, Susan. Our family and extended family of dedicated technicians and installers are ready to assist you. Give us a call to schedule an appointment or stop by our Keego Harbor location to visit our showroom. You may even be greeted by one of our fury friends!
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Interested in financing? Apply today through Michigan Saves. Alternatively, feel free to call their loan center at (877) 867-8522 to speak to someone directly. Take advantage of utility rebates and tax incentives when purchasing high-efficient equipment for your home. Check out our seasonal ads in the Monthly Shopper, Dollars Inside and the Neighborhood Connection for special offers.
Reviews (7)
Patrick Ong
Patrick Ong
Sep 20, 2020
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
I recently had my furnace and air conditioner replaced. I would like to thank the owner and crew for doing such a professional job. I have been in the service industry most of my career and I can tell you their work was exceptional.
John Mason
John Mason
Jul 20, 2019
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Fixed our problem we had.
they did a fantastic job.
came out quickly after calling them with the problem we had.
i would highly recommend them again
Charlotte Kim
Charlotte Kim
Sep 26, 2017
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They came out to my place couple years ago to fix the heater. I called them on Friday to schedule appointment. They said they can come on the following day (Saturday) even though they are not open. I said "I thought you were closed on Saturdays." The lady on the phone was so nice. She said, "It is getting colder and we want you to have heat as soon as possible." I was so grateful for their service. A different company I called before I contacted Otto A Trzos gave me such a hard time about scheduling. Thank you for your wonderful service!
Terri Graham
Terri Graham
Aug 25, 2017
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So disappointed that your technician tried the "cracked heat exchanger" scam and tried to sell us a new furnace. I researched the Carrier model he recommended and it's described as an economy model suitable for short, mild winters and long, humid summers. Not exactly appropriate for Michigan, do you think? Anyway, I called in another company, and it turns out we needed a new igniter for $148. Does your guy get commission for selling furnaces? I'm so glad we didn't buy a new furnace, and one that would have been wrong for this climate!
Jason C.
Jason C.
Aug 13, 2016
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Honest, reasonable, knowledgeable, and prompt. Our family has been using Otto Troz for years and recommend them to all of our friends. You simply can't find this level of service from a heating and cooling company anywhere else. Thank you!
Ki R.
Ki R.
Jun 18, 2016
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Denis came out within an hour of my calling on a Friday evening and quickly located my Mom's air conditioning problem, explained the issue and resolved it.
Kathleen L.
Kathleen L.
Jun 29, 2014
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Tonight, David came out on an emergency call for my uncle, a 90 year old man with no air conditioning. It was 90 degrees and humid today, and my uncle had just been released from a hospital. Needless to say, it was unbearable in the house and he was suffering. David was an angel. He drove to Waterford from Holly on this Saturday night to perform the repair. At first he didn't know if he could repair it ( the line was frozen solid), but he worked tirelessly until he got it. David was incredible! Excellent service, pleasant, and very kind! Thank you, David.... And you have this family's