Customer Testimonials


“Terry and Tristin worked together well as a team. removal of the old boiler and indirect water heater was challenging. They did a good job of clean up before starting the new installation. Both men were pleasant, answered all my questions and did a very neat, professional installation. The work was completed as quoted by Nick.”
- Fred M.

“Terry and Tristan were friendly, efficient and professional. They were very respectful of my house and property. They were excellent. I would recommend ESI to everyone.”

- Ron G.

“From the start (phoning the company) until the final installation the process was smooth and professional. Clearly the installers are seasoned professionals who worked efficiently and made sure to answer all our questions. It could not have been a better experience. Thank you!!”

- Chris H.

“On-Demand whole house heating and domestic hot water unit installed by Justin and Terry. They removed all the old equipment for disposal and installed the new unit in a fairly short time. They even provided space heaters for us while doing the tear out and install. Very efficient and neat while on the job and the new heater is working great. Thank you ESI for the prompt and excellent installation.”

- Ray L.

“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.

“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.

“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.

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.