Generator Repair in Palatine, IL

A generator that won't start when the power goes out has one job and missed it. Five Star repairs generators in Palatine so yours is ready when you need it.
generator repair in backyard
Ready to Schedule Your Service?

Generators Only Matter When the Power Is Out

The problem with a generator that isn’t working is that you usually don’t find out until a storm has already knocked out your power. At that point, a repair call isn’t convenient, it’s urgent. Five Star provides generator repair in Palatine with the same responsiveness and diagnostic precision we bring to every electrical service call. Whether your generator won’t start, runs rough, shuts off under load, or is showing a fault code you don’t recognize, our electricians will identify the cause and give you an upfront cost to fix it before any work begins.

Common Generator Problems We Repair

Generator issues range from straightforward maintenance-related failures to more involved electrical or mechanical faults. Among the most frequent problems we see are dead batteries that prevent the generator from starting, stale fuel or clogged carburetors in units that sit unused for long periods, failed automatic transfer switches that prevent the generator from detecting a power outage and starting automatically, faulty voltage regulators that cause output fluctuations, and worn spark plugs or air filters that cause hard starting or rough running. We work on both portable generators and permanently installed standby generators from major brands.

Standby vs. Portable Generator Repair

Standby generators and portable generators share some common failure points but differ significantly in how they’re diagnosed and repaired. Standby generators are permanently wired to the home through an automatic transfer switch, run on natural gas or propane, and are expected to start automatically within seconds of a power outage. When they fail to do so, the transfer switch, control board, or fuel system are common starting points for diagnosis. Portable generators are simpler in design but often suffer from fuel system issues related to extended storage. Five Star handles both types and will diagnose the specific system that’s causing the problem rather than applying a one-size-fits-all approach.

Regular Maintenance Prevents Most Failures

The majority of generator failures we respond to are preventable with consistent maintenance. A generator that is tested monthly, has its oil and filters changed on schedule, and has its fuel system managed correctly between uses is significantly less likely to fail when called upon. Five Star offers generator maintenance visits that cover all of the checks and service items needed to keep your unit reliable, and we’ll let you know if anything we find during a maintenance visit warrants attention before the next storm season arrives.

generator installation

Get Your Generator Back in Working Order

If your generator isn’t performing the way it should, don’t wait until the next outage to find out. Call Five Star at (847) 250-6610 or book online to schedule a generator repair visit with a licensed electrician.

Call Us Anytime

24/7 availability for emergencies.

Flexible Scheduling

Choose a time that works best for you.

Fast Response

Same-day & next-day services available.

Why Palatine Homeowners Trust Five Star

  • Nearly 40 years in business. Five Star has been a trusted home services resource in the Palatine area for close to four decades.
  • Licensed and insured. Every electrician is fully licensed and insured on every job.
  • Upfront pricing. We diagnose first and quote before any repair work begins. No surprises.
  • Same-day service available. We make every effort to reach generator repair calls the day you contact us.
  • Satisfaction guarantee. We stand behind every repair we complete.
  • Standby and portable generators serviced. We repair both permanently installed and portable generator systems.
generator installation in back of home
Frequently Asked Questions
Why won't my generator start?
The most common causes are a dead or discharged battery on a standby unit, stale fuel or a clogged carburetor on a portable generator that hasn’t been run in a while, a tripped low-oil shutoff, or a fault in the control board or automatic transfer switch. Each of these requires a different fix, which is why an accurate diagnosis matters before any parts are replaced. Our electricians will work through the system methodically to identify the specific cause.
Most manufacturers recommend a full service annually, including an oil and filter change, spark plug inspection, air filter replacement, battery test, and a load test to confirm the unit starts and transfers power correctly. Monthly self-tests, which most standby generators run automatically, help catch issues between annual service visits. Keeping up with this schedule is the most reliable way to ensure the generator performs when it’s needed.
A generator that starts but shuts off when appliances are connected is often dealing with a fuel delivery issue that limits output under load, an overloaded circuit, a failing voltage regulator, or an overheating condition caused by inadequate ventilation or a clogged air filter. The specific cause depends on how quickly it shuts off, whether a fault code is displayed, and what load was applied when it happened. Our electricians will gather that information during the diagnostic and use it to pinpoint the problem accurately.