Cornell in Belleville Township wrote:

Heinanen Engineering is a marvelous company with intelligent, caring, and gracious staff. If spending the money on home products were any more of an enjoyable experience, we would have them here all year.

We highly recommend Heinanen Engineering and Trane to all our relatives, friends, and anyone looking for service.

Mr. H in Romulus wrote:

Absolutely top notch experience, beginning to end!

The HEI technician was very knowledgeable, friendly, and exceptionally thorough in the analysis/evaluation of my system sizing. He spent 2 1/2 hours at our initial consultation, taking measurements, asking questions, running multiple calculations, discussing the pros and cons of R22 vs. R410a, and answering all of my many questions. Being a mechanical engineer myself, I could tell that he knew what he was talking about, that he was being very honest, and unbiased in his answers, and that he had no personal agenda to “push or sell” me anything that I didn't want or need.

I had contacted several other contractors to quote on the job, and none came remotely close to the level of “pre-sale” service that the technician provided. [The quote] was comparable to some of the others I had got, for similar systems, but the small difference in cost was far outweighed by his exceptional level of knowledge and service, and willingness to “freely give his time and knowledge” before the sale.

Brian F in Dearborn wrote:

The owner and his installers at Heinanen Engineering, Inc. are extremely professional and courteous. They made sure my new furnace and air conditioner were properly sized and installed to my satisfaction. I would definitely recommend them for a top quality heating or cooling system and installation.

Mark K of Redford wrote:

I just wanted to send you a personal thank you for the wonderful work you & your company performed at my house. The furnace and A/C are working great. It makes me feel really glad that I got it all done before winter sets in. I also appreciated how well-orchestrated the install was & know that you were instrumental in making it happen. The house inspection happened at the end of September and the Redford inspector told me that you did fine work and that it looked excellent to him. That was the icing on the cake for me! You should be really proud of yourself & your people. Thanks again!

Gerry M of South Lyon wrote:

Heinanen Engineering was exceptional. I had thought that “true customer service/satisfaction” had been reduced to words in an advertisment until I worked with these people. From the owner, through the installers to the office personnel-- everyone was polite, informative, caring and genuinely interested in ME! I will definitely recommend Heinanen Engineering to my friends and family. I have already given their phone number to a few people. Trane is lucky to have these people representing your company. Very trustworthy. Quality workmanship.

Mark C in Livonia wrote:

I am very pleased with the system. There's no question it's superior in every respect to the one it replaced. Working with Heinanen was in every way a great experience. Everyone I met I would trust in my home without me present. I would refer anyone looking for a system to Heinanen. I was also pleased to hear Trane is still an AMERICAN made product.

Mr. and Mrs. Kennedy in Ann Arbor wrote:

HEI does all our heating and cooling on several properties. They are the most knowledgable team we've seen.

David P in Westland wrote:

Could not get better than I received from Heinanen Engineering Inc- from the salesman to the installer- quality work, quality products.

Chad and Angela from Plymouth wrote:

OUTSTANDING EXPERIENCE!! I would highly recommend Heinanen Engineering and Trane products to anyone. The service was excellent - above and beyond what we expected. The work was performed perfectly; they were very polite, quiet and prompt. The installers were very professional and kept our house very clean. Mr. Heinanen did an outstanding job of explaining not just the equipment but the process and what would happen - we could not be happier. The equipment he installed is quiet, keeps the house more comfortable than we could imagine and has made a significant difference in our quality of life! We could not be happier with the overall experience!!