Meet Our Team Amy Moyer Office Manager 1 Review Randy Martin Installation Manager 1 Review Justin Walker Installation Crew Leader 16 Reviews Jeremiah Pierce Installation Technician 3 Reviews PJ Cook Installation Technician No Reviews Terry Quillan Installation Technician 15 Reviews Steve Russman Service Technician 1 Review Mike Charles Service Technician 10 Reviews 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.