Customer Testimonials


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. I’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.

Gas Furnace Installation in Portland, MI 48875

“Mike is courteous, friendly and knows his job well. He has always taken the time to answer my questions and point things out. Mike is awesome and so is ESI!”

– Marcy L.

Gas Furnace Installation in Portland, MI 48875

“Justin and Terry did a great job with the installation of my new furnace. They were very knowledgeable and took the time to explain everything. Kudos to ESI!”

– Marcy L.

Gas Furnace Installation in Sunfield, MI 48890

“They are professional and explained as they went along. They showed me what they had done upstairs and in the basement.”

– Joyce R.

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.