Customer Testimonials


Gas Furnace Installation in Lansing, MI 48917

“We had a new furnace/filter/humidifier/thermostat installed. Terry and PJ did a great job – neat, thorough, considerate. We had one issue: after they did their testing they apparently forgot to flip a switch on the gas valve and so after the showed us all about programming the thermostat and the furnace was seemingly working fine, they left and the furnace would not cycle back on. After I checked what I knew to do, and it still didnโ€™t cycle back on, I called the after hours number and spoke to the on call person (whose named I failed to write down and now canโ€™t remember) came right over, found the problem and corrected it. If you wonder at the 5 stars I rated them, I can only say that my clue that this is the company you want to work with is this: little oversights can always occur; what is important is the quality of the service recovery when those things happen. ESI was first rate.” – Howard B.

Gas Furnace Installation in Westphalia, MI 48894

“We want to thank ESI Heating and Cooling for an excellent job in installing our new furnace and air conditioner. The technicians, Justin and Terry were very courteous and informative about the installation, details and clean up.

Very pleased with the services of ESI.”

– Larry T.

Geothermal Heat Pump Installation in Charlotte, MI 48813

“Did good work and explained everything clearly ๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘”

– Herbert A.

Gas Furnace Replacement in Portland, MI 48875

“Great work done by Justin and Terry. The work was clearly done the right way and they explained everything to us before they left. On top of that our house looked cleaner after they left than when they first got here! Thanks for everything Justin and Terry!”

– Mike C.

Semi-Ducted Mini-Split Repair in Lansing, MI 48915

“Justin and Terry were efficient, friendly, respectful, and cleaned up thoroughly after they finished. Iโ€™m very happy (and cool again).”

– Daniel L.

HVAC and Indoor Air Quality Replacement in St. Johns, MI 48879

“Very polite gentleman, kept me informed as work progressed, very thorough completion review. I will recommend this company and these employees to everyone.”

– Shannon T.

Gas Furnace Installation in Grand Ledge, MI 48837

“Justin & Terry installed a furnace and air conditioner for me. The service was performed very professionally and neatly. They spent the time in answering my questions in an informative, friendly manner and familiarized me with all the components and system operation. A job very well completed .”

– Ron F.

Ductless Mini-Split Installation in Other, MI 48823

“Justin and Terry did a fantastic job from start to finish! This is easily the best experience I’ve ever had with a company doing work on my home. They were punctual, kept me informed, and made the mini-split installation in my almost 100-year-old home look easy:). I highly recommend ESI and specifically Justin and Terry!”

– Sara D.

Boiler Installation in Mulliken, MI 48861

“Justin and Terry did a fantastic job on the install of our new combi boiler. They were respectful, timely, and willing to answer all our questions during the installation. They ended up working on our house for 2.5 days and we’d be happy to have them back anytime.”

– Lucas N.

Boiler Installation in Mulliken, MI 48861

“Mike is awesome. On the first trip out to trouble shoot our new install, he had to spend more time than I’m sure he had planned, but put in the extra effort to make sure everything was fully operational. On the second trip back he did the full start up and was more than happy to answer all of our questions. Very personable, knowledgeable, and an overall great person to work with. We’d be happy to have him back!”

– Lucas N.

Need HVAC Service?

Contact the experts at ESI Heating.

Call us at 517-647-6906!


ESI Heating proudly provides HVAC service to Portland, Dewitt, Grand Ledge, the Greater Lansing area and the surrounding communities. Visit our service area page for more coverage details, call us at 517-647-6906, or request service online today.