Generator Repair Services in Denver, CO : Jim Needham Heating, Cooling, Plumbing, Drain & Electrical

When your backup system fails, every minute without power can disrupt your home and put essential appliances at risk. At Jim Needham Heating, Cooling, Plumbing, Drain & Electrical, we respond quickly with expert repair services to restore reliable performance. Our licensed electricians diagnose the issue and provide precise repairs that get your system running safely again. No guesswork, no delays—just dependable help when your system needs it most.

Denver homeowners rely on our team to repair a wide range of issues, including startup problems, fuel flow interruptions, output inconsistencies, and transfer switch failures. We service a variety of models and fuel types, ensuring every repair is completed to code and tested before we leave. With no service call fees and decades of experience, we make sure your power protection works exactly as intended. If your system has gone quiet, we’ll bring it back to life—safely and reliably.

What We Can Fix

No matter what’s causing your backup system to fail, our electricians are equipped to find the problem and resolve it quickly. We work with a wide range of models and configurations, addressing everything from mechanical issues to control panel malfunctions.

Common repair services include:

Diagnosing systems that won’t start or fail to switch on automatically
Repairing fuel line issues, leaks, or delivery blockages
Replacing damaged starters, batteries, or spark plugs
Troubleshooting transfer switch failures and miscommunication
Fixing inconsistent voltage output or load imbalances
Addressing overheating or shutdowns during extended use

What Causes a Generator to Stop Working?

Even high-quality backup systems can experience failures, especially if they go too long without service or are used heavily during extended outages. Environmental factors, fuel problems, or wear on internal parts can all contribute to performance issues. Understanding what can go wrong is the first step to making sure it doesn’t happen again.

Here are a few common causes of failure:

Dead or weak batteries that prevent proper startup

Clogged air or fuel filters restricting airflow or fuel supply

Faulty spark plugs or ignition components

Internal damage due to lack of lubrication or overheating

Control board errors or sensor malfunctions

These problems aren’t always obvious, which is why professional diagnostics matter. Our team doesn’t just repair the issue—we make sure the system is fully tested and ready to handle the next outage with confidence.

Do you work on all types of generator systems?

Yes, we repair a wide range of residential units, including standby and portable models from top manufacturers like Generac, Kohler, and Briggs & Stratton. Whether your system runs on propane, natural gas, or diesel, our team has the tools and knowledge to handle it. We’re familiar with various setups, fuel types, and control configurations.

What if the same issue keeps coming back?

If a problem repeats, it’s often a sign of an underlying issue that wasn’t addressed during previous service. We take the time to investigate root causes—not just symptoms—so you’re not left dealing with the same failure again. Our repair process includes full testing and, if needed, recommendations to prevent future breakdowns.

"I’m thrilled with the service I received today. I had an emergency and Mike and Isaiah were extremely professional, knowledgeable, friendly and efficient. The staff at Jim Needham were very friendly and went above and beyond to get Mike and Isaiah out quickly. I will absolutely use Jim Needham again! Thank you!" -Kelly C.

More Reviews

Generator Repair Services in Denver, CO A backup syst

What We Can Fix

What Causes a Generator to Stop Working?

How quickly can a repair be scheduled during an outage?

Do you work on all types of generator systems?

What if the same issue keeps coming back?