Customer Testimonials


Gas Furnace Replacement in Portland, MI 48875

“Clean efficient on time and very friendly. Would recommend ESI to anyone that ask” – Dave M.

Geothermal Heat Pump Installation in Charlotte, MI 48813

“Justin and Terry were very professional, courteous, and knowledgeable.
They took the time to make sure everything was done correctly, to explain how everything worked when the install was completed, and to answer all our questions. They cleaned up the work site and even swept the floors of the rooms they had been working in. I would recommend them to anyone looking to have work done by ESI. A pleasure to do business with them.”

– Ivan B.

Boiler Installation in Charlotte, MI 48813

“After taking a major lighting strike which knocked out multiple systems, including our boiler which provided heat and domestic hot water, ESI was the company that could respond quickly. After an in home analysis of the damage by Nick, it was decided that the most cost effective solution was an installation of a complete new boiler system. Installers Justin and Terry did an excellent job. John the follow up system analyst also demonstrated exemplary work. All of them were polite and professional. The clean up was great! I would gladly recommend ESI Heating and Cooling to my friends and Family. I’ll be using ESI for all my heating and cooling needs.”

– Philip B.

Air Conditioner Installation in Lake Odessa, MI 48849

“Very professional, very courteous, very knowledgeable. Work very hard to assure we had a functional hvac system ASAP. I would highly recommend this company.”

– Michael R.

Air Conditioner Replacement in Lansing, MI 48912

“Justin and Terry were very knowledgeable about best practices for replacing my AC unit. They also took the time to replace some old valves that are no longer used in case I want to install a humidifier in the future.”

– Paul T.

Gas Range Line Installation in Lansing, MI 48906

“The guys were great, fast and highly experienced. Clean up perfect and post install explained all that was done. Excellent job”

– Phil D.

Whole House Humidifier Installation in Portland, MI 48875

“Justin & Terry were very courteous and professional. They removed our old system and installed the new Aprilaire unit. Justin took time to explain the new unit in detail and answered all of our questions. They cleaned up the area and when they left, it was better than when they started.”

– Gary F.

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 didn’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 can’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 ?????”

– Herbert A.

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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.