4B Systems, Inc.
Based in Mundelein, this electrician upgrades panels and handles generator work for homes, and it offers emergency service. Buffalo Grove, Libertyville and Waukegan are also served.
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Based in Mundelein, this electrician upgrades panels and handles generator work for homes, and it offers emergency service. Buffalo Grove, Libertyville and Waukegan are also served.
North Shore work from this electrician includes panel upgrades and generator work, backed by a one-year labor guarantee. It serves Northbrook, Glenview and Winnetka.
Generator installs and panel upgrades come from this family-owned company, which offers free estimates and addresses power outages.
Based in New Lenox, this generator shop works with Generac and Briggs & Stratton units on standby systems, and is open Monday through Saturday.
Operating since 2005, this family-owned Westmont firm works with Kohler and Generac generators and offers 24-hour service. Panel upgrades are also part of its work.
Founded in 1996, this Wheaton company installs generators and upgrades electrical panels, and offers emergency repairs. Naperville, Elmhurst and Oak Brook are also covered.
This Monday-to-Saturday electrician covers transfer switches, generator interlocks and panel upgrades, for both residential and commercial work.
Since 1973, this family-owned firm installs standby generators, including Generac models, and handles panel upgrades. Lake Forest and Deerfield are among the towns it serves.
Open seven days a week, this Chicago electrician installs standby generators and upgrades panels, and offers emergency service.
Manual transfer switches for portable generators and circuit breaker panel work set this Schaumburg firm apart. Established in 1986, it also serves Chicago.
From Naperville, this family-owned company handles generator installs, backup power and panel upgrades for homes and businesses. It also serves Aurora, Plainfield and Hinsdale.
This company, open 24 hours a day, handles generator installs and panel upgrades for homes, serving Elgin, Itasca, Addison and East Dundee.
Since 1990, this family-owned Glenview firm offers Tesla Powerwall home batteries alongside standby generator installs and panel upgrades.
A two-year workmanship guarantee covers the work of this Wood Dale company, which installs standby generators and upgrades panels. Roselle and Bensenville are also served.
This Homer Glen contractor works with Generac generators and Tesla Powerwall batteries, and is open 24 hours a day.
With over 20 years of experience, this Aurora contractor handles standby generators and other electrical work for homes and offices.
Generator installation sits in the larger-project range for this Bolingbrook company, which also takes on smaller electrical repairs.
Generator installs are part of the work here, with Elgin, Evanston and Skokie among its towns, and it offers emergency service.
Based in Evanston, this electrician installs generators and upgrades panels, with service available at all hours.
Family owned since 2001, this Crete company installs Generac standby generators and upgrades panels. Financing is available, and it serves Naperville and Frankfort.
Electrician whose website lists generator installs and backup power.
HVAC contractor whose website lists standby generators and generator installs.
Electrician whose website lists standby generators and generator installs.
Electrician whose website lists standby generators and generator installs.
Electrician whose website lists generator installs and backup power.
HVAC contractor whose website lists sump pumps, backup power, weeping tile and generators.
Electrician whose website lists standby generators, generator installs and backup power.
Electric vehicle charging station contractor whose website lists standby generators and home battery backup.
Electrician whose website lists backup power and generators.
Since 1965, the firm handles generators and control panel upgrades, works with Lennox equipment, and serves Evanston, Skokie and Highland Park.
Electrician whose website lists standby generators and generator installs.
Electrician whose website lists standby generators and generator installs.
Focused on Generac generator repair, this electrician also handles panel upgrades. Open around the clock, every day, it serves Merrillville, Gary and Crown Point.
HVAC contractor whose website lists standby generators, generator installs and backup power.
Electrician whose website lists generator installs and transfer switches.
Electrician whose website lists standby generators, generator installs and backup power.
HVAC contractor whose website lists generator installs.
Transfer switches and home battery backup sit alongside standby generator installs at this family-owned firm, which works with Tesla Powerwall and serves Elgin, Wheeling and Barrington.
Electrician whose website lists standby generators, generator installs and transfer switches.
Family owned, this electrical contractor focuses on panel upgrades and electrical service replacements, and serves Chicago, Evanston, Skokie and Niles.
Electric generator shop whose website lists generator installs, transfer switches and backup power.
Electrician whose website lists standby generators and generator installs.
Electrician whose website lists standby generators, generator installs and transfer switches.
Electrician whose website lists home battery backup and generators.
Dating to 2007, the family-owned company works on standby generators, with Kohler and Generac among its brands, and also upgrades panels. It serves Naperville, Lombard and Plainfield.
Electrician whose website lists standby generators and generator installs.
Lincolnshire, Illinois firm covering furnaces, boilers, heat pumps and air conditioning, sump pumps and sewer line repair, standby generators, and structural drying across Chicago's North Shore suburbs.
Serving Joliet, Mokena, Frankfort and Lockport, the company installs standby generators, Generac models among them, and handles panel upgrades. It is open around the clock.
Electrician whose website lists generator installs, transfer switches and backup power.
Electrician whose website lists standby generators and generator installs.
Plumber whose website lists sump pumps, generator installs and sewer line repair.
Electrician whose website lists standby generators and generator installs.
Electrician whose website lists generator installs.
Electrician whose website lists standby generators, generator installs and backup power.
Electrician whose website lists standby generators, generator installs, transfer switches and generator interlocks.
Heating, cooling and plumbing contractor in Lombard, Illinois, working on furnaces, heat pumps, sump pumps and generator installs across the western Chicago suburbs.
Round-the-clock service every day from this company, which has worked since 1992 and installs generators while upgrading electrical panels. Service reaches Naperville, Schaumburg and Elgin.
Electrician whose website lists standby generators and generator installs.
Electrician whose website lists generator installs and home battery backup.
Family owned and open around the clock, every day, this Libertyville business installs generators and upgrades panels. Its towns include Mundelein, Lincolnshire and Arlington Heights.
HVAC contractor whose website lists generator installs.
Plumber whose website lists sump pumps, transfer switches, sewer backup prevention and sewer line repair.
Open around the clock, every day, this family-owned HVAC firm, in business since 1951, installs standby generators and handles panel upgrades, serving Gary, Merrillville and Schererville.
Electrician whose website lists standby generators and generator installs.
Electrician whose website lists standby generators and generator installs.
Plumber whose website lists generator installs, furnace repairs and installs, boiler service and heat pumps.
Electrician whose website lists standby generators and generator installs.
Electrician whose website lists standby generators, generator installs and transfer switches.
HVAC contractor whose website lists standby generators, generator installs, transfer switches and backup power.
Electrician whose website lists standby generators and generator installs.
Know a good one we’re missing? Suggest one
A generator wired into your home needs an approved transfer switch, fitted under a permit, so it can’t feed power back into the lines. Plan it before you buy.
Get written quotes from at least three contractors for the same work, and check references from recent clients.
Put it in a written contract: the work, price, deposit, start and finish dates, warranty, permits and clean-up. Paying cash to skip it leaves you no recourse.