4B Systems, Inc.
- Website checked
Chicago electrical contractor offering panel upgrades and generator work, with emergency service across Chicago and nearby suburbs.
Highlights Chicago is an electrical contractor that handles panel upgrades and generator work, along with lighting upgrades, EV charger installations and code violation corrections. It also does HVAC work. Emergency service is offered, and free estimates are available. The company covers Chicago and suburbs including Evanston, Northbrook and Glenview. Family-owned and in business for 12 years, it can also prepare estimates online.
Listed under Backup power
Checked 12 Nov 2026, from public sources.
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