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Electrical Services

A Leading Provider Of Generator Maintenance

We completely understand that you may not always be thinking about your generator all of the time, but fortunately we love to think about your generator every day! We believe in Ben Franklin’s timeless advice when it comes to generator maintenance: “An ounce of prevention is worth a pound of cure.”

That’s why we offer flexible maintenance plans so that you’ll never have to worry about your generator and that you’ll always know it’ll be working when you need it.

Maintenance Plans

Choose from our quarterly, bi-annual, or annual maintenance plans. Catch any problems you may have with your generator before they become a major problem.

Generator Size Annual (1) Checkup Bi-Annual (2)Checkup Quarterly (4)Checkup
Air Cooled;
7kW – 22kW
$225.00 $400.00 $570.00
Liquid Cooled;
22kW – 45kW
$250.00 $450.00 $795.00
Liquid Cooled;
48kW – 80kW
$400.00 $725.00 $1,350.00
Liquid Cooled;
100kW – 150kW
$590.00 $1,125.00 $2,000.00

Generator Maintenance Service

  • Travel to Customer’s Site
  • Penco Electric to maintain maintenance records per manufacturer requirements
  • Visual Inspection, Cleaning, Oil Change, Air Filter Change, and Spark Plug Inspection/Replacement
  • Complete an engine test and inspection during generator operation to verify output voltages and overall performance
  • Any additional part or services required are extra

Contact Us Today

We always maintain the records of your generator repair service history with our generator maintenance program and our repair technicians are certified to perform all maintenance duties and generator repairs necessary. Thank you for choosing Penco! Call today at 847-475-1231.


"Installation not completed yet, but found this firm the most professional with the best price as well."
Bruce B. in Lake Forest, IL
"They delivered everything they promised in a timely manner. Installers were polite and professional. Couldn't be happier with our new generator."
Spencer G. in Elmhurst, IL