Meet Our Team Jenni L Office Manager No Reviews Randy M Installation Manager 1 Review Justin W Installation Crew Leader 29 Reviews Sean R Installation Technician No Reviews Terry Q Installation Technician 29 Reviews Tristan H Installation Technician No Reviews John R Service Technician 1 Review Steve R Service Technician 1 Review Need HVAC Service? Contact the experts at ESI Heating. Call us at 517-647-6906! Request Service 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.