Mike Farmer – June 8, 2011

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We have used Mr. Heat & Cool several times. He shows up when he says he will and efficiently services our issues. Mark is a true "technician". He knows the heating/cooling products better than anyone I have talked to and is able to use that knowlege to diagnose problems.

I do not hesitate calling him when we have a problem or for preventative maintenance.


Greg Henderson – June 6, 2011

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I have been "very" happy with the service provided by Mark. My wife and I built a house about 4 years ago and he took the time to sit down and explain how our geothermal system works before we even had it put in the house. He was easy to talk to and he explained things in detail. If there was a problem or a question, I was able to get a hold of him and he was out to my house or calling me back with out much waiting. Mark is willing to go the extra mile to keep his costomers happy. Mark is very reliable and knowledgeable on heating and cooling and I would recommend his service to anyone looking for a heating and cooling system or just for his professional service and maintenance.

Bill Tressler – June 6, 2011

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Mark is an incredible contractor to deal with and will do everything to make the customer happy. I have personnally know him for over 12 years and would recommend him for any job!


Curt Mencer – June 6, 2011

I recently engaged Mark to clean my dryer vent system. During the process he found that the vent system was clogging dangerously because of the way the vent was routed to the outside wall. He then rerouted the venting and solved the problem. Mark was very professional and the work was done in a timely and efficient manner. Great service!


Sheldon Parrish – June 4, 2011

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Mark has lots of knowledge and great follow up.
I highly recommend him.


Karen Lindback – June 4, 2011

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Professional, experienced, hard-working describes Mr. Heat & Cool. This type of service is difficult to find today!


Gary Doty has endorsed your work as Owner at Mr Heat and Cool.

Dear Mark,
I've written this recommendation of your work to share with other LinkedIn users.
Details of the Recommendation:  "I have served with Mark Grant for over ten years on the Board of Directors of the Michigan Chapter of Air Conditioning Contractors of America, and can attest to his enthusiasm, integrity, and ability.  Mark's expertise in the Heating and Cooling industry goes beyond just his ability to design, install, and service the products he represents.  Mark has been a voice in our industry for continuing education, tighter regulations and code enforcement, and ACCA quality standards.  It is my distinct pleasure to recommend Mark Grant personally and proffessionally for any position or project related to the HVAC industry.
Gary L. Doty
Doty Mechanical, Inc.
Lansing, MI 48917"