Local generator service for the system you already own
When your standby generator is overdue for service, showing a fault, failing its exercise cycle, or refusing to power the house, call Dave's. We maintain and repair Cummins and Generac systems and bring generator, electrical, fuel, and transfer-switch experience to the same service call.
Generator maintenance and repair
Dave's handles routine maintenance and real generator repair. Whether the system is simply due for service or already giving you a reason to worry, we help you get ahead of the next outage with a clear answer and a practical path forward.
We service Cummins and Generac standby generators according to the equipment and runtime. Oil, filters, plugs, battery condition, controls, airflow, visible leaks, exercise settings, and current warnings all receive the attention they are due.
If the generator will not start, shuts down, cranks slowly, or displays a code, we troubleshoot the failure instead of clearing the warning and sending you into the next outage with the same problem.
A running engine does not help if the home never transfers to backup power. Dave's can follow complaints involving the generator, automatic transfer equipment, controls, and electrical side.
Long runtimes can move maintenance forward quickly. After an extended outage, we can service the equipment, review its fault history, and address problems before the generator sits neglected until the next storm.
What knowledgeable generator service covers
A standby generator depends on several systems working together. Dave's services the equipment as a backup-power system so important problems are less likely to hide behind a clean filter and fresh oil.
We complete the engine maintenance due for the model and runtime and look for leaks, wear, and conditions that should be corrected before extended operation.
We test the battery and charging system and check terminals and cables. If the generator cannot crank with authority, nothing else gets a chance to work.
We clear serviceable restrictions and check cooling paths and enclosure condition so the engine can shed heat during a long outage.
We read the fault history, address active warnings, confirm operating mode, and leave the exercise schedule set correctly.
We follow symptoms that point to valves, pressure, regulators, propane supply, or engine fuel delivery and explain when fuel-side work is needed.
We connect the service back to backup operation with the functional generator and transfer checks appropriate to the system and work performed.
Generator repair without the runaround
You do not need a cleared fault code and a guess. You need to know why the generator failed and what it takes to put it back to work.
Dave's works on the problems homeowners actually call about: no-starts, slow cranking, shutdowns, warning codes, rough running, leaks, failed exercise cycles, and generators that run without transferring the home. We follow the symptom through the systems that can cause it and keep you informed about what we find.
If the failure is repairable, we explain the work and move forward with your approval. If the system needs larger fuel, electrical, transfer, warranty, or replacement work, you get a clear next step instead of being passed between companies with no one owning the answer.
Why choose Dave's
A standby generator sits at the intersection of an engine, fuel supply, electrical service, controls, and transfer equipment. Dave's has the trade depth to look beyond one component and help you get the complete answer.
We maintain and repair the standby brands Upstate homeowners rely on, and you can call us even when another company installed the equipment.
Our HVAC, plumbing, gas, and electrical capabilities help us follow problems across the systems that make backup power possible.
If the generator has a sound repair path, we show you what failed and what it takes to correct it. We do not turn every fault into a replacement pitch.
You get a local company that can handle routine maintenance, future repairs, and larger generator, gas, or electrical needs when the system requires them.
Google Customer Reviews
Google review excerpts from homeowners in Spartanburg, Taylors, Greer, Wellford, and across the Upstate.
Darryl Thomas
★★★★★ Spartanburg, SC“Dave was very nice and informative. He did a great job making the necessary repairs along with installation of our generator.”
complo
★★★★★ Spartanburg, SC“Product and service is impeccable and Dave is the kind of person you want at your home or business.”
Sylynda T.
★★★★★ Spartanburg, SC“Super nice and explained everything in a way I understood.”
Charles C.
★★★★★ Taylors, SC“Excellent work. The tech explained what he was doing and why.”
Karli S.
★★★★★ Greer, SC“Prompt, efficient, and very knowledgeable.”
Cass G.
★★★★★ Spartanburg, SC“Timely, professional, and the explanations were thorough.”
Nathaniel H.
★★★★★ Spartanburg, SC“Great customer service and communication. Very thorough work.”
P. Springfield
★★★★★ Wellford, SC“Excellent service and great communication at a reasonable price.”
Local generator service
Dave's services the standby equipment Upstate homeowners count on and can help whether we installed the generator or not.
Generator maintenance plan
Add generator maintenance to Dave's RightFirst Comfort Plan for $10 a month. We service your generator during both scheduled HVAC maintenance visits, giving it two maintenance visits a year from the same local team.
We service the generator during both HVAC visits included with your Comfort Plan.
Maintenance follows the requirements for your model, engine, runtime, and current condition.
If we find a problem, we show you what failed and what it takes to correct it before the next outage.
Generator service paths
Start with Dave's complete generator installation page for Upstate SC.
Explore installationWork with Dave's as an authorized Cummins generator dealer.
View CumminsSee how loads, fuel, transfer equipment, and placement shape a system.
Plan the systemGenerator Service Areas
Tap a city for local service details and availability.
Straight answers
Before you schedule generator service, you may want to know what maintenance covers, whether we work on your brand, what a fault code means, and when post-outage service matters. Here are straight answers.
Most residential standby generators need scheduled service at least once a year. Runtime matters too. A long outage can bring the next oil, filter, or inspection interval forward quickly. We check the manufacturer, model, engine, hours, and service history so your generator gets the maintenance it is actually due for.
No. Exercise proves the engine can start and run under that programmed cycle. It does not always prove the automatic transfer switch will move the house to generator power or that the generator will carry the loads you expect during an outage. That is why real generator service looks beyond the weekly sound in the yard.
We service the engine to the model's requirements and check the systems that determine whether the generator will start and keep running. That includes the battery and charger, terminals, airflow, enclosure, controls, fault history, visible fuel concerns, leaks, and functional operation. The exact parts and intervals follow your generator, not a generic tune-up sheet.
A cranking generator may have a fuel-delivery problem, ignition failure, controller lockout, low-fluid condition, damaged wiring, sensor problem, or another engine or control fault. We use the fault history and operating symptoms to find the failure instead of clearing the screen and hoping it starts next time.
The controller is telling you the generator stopped or detected a condition it could not ignore. Codes may point toward overcrank, low oil pressure, battery or charger trouble, speed, voltage, frequency, or a control problem. Write down the code and call us before repeatedly resetting it. The code starts the investigation. It does not finish the repair.
Yes. We maintain and repair Generac and Cummins residential standby systems, and Dave's is an authorized Cummins generator dealer. The model, age, warranty status, parts availability, and exact failure determine the repair path, but you are not limited to calling us only for equipment we installed.
Documented maintenance can be important when a manufacturer reviews a warranty claim. It also gives us a service history when a fault appears. Warranty coverage still depends on the manufacturer, registration, model, failed part, and terms. We keep the maintenance clear without pretending every future repair will be covered.
Write down the controller message or fault code and call Dave's. You can confirm the generator was not intentionally left in OFF mode, but do not open energized equipment or keep forcing resets. Repeated attempts can erase useful information and will not fix a fuel, battery, control, engine, or transfer problem.
Yes, especially when it ran for many hours or reached a manufacturer service interval. Extended operation can make oil, filters, fluid levels, leaks, battery charging, airflow, and fault history immediately relevant. Schedule post-outage service before the next storm so the generator is not left sitting with maintenance already due.
Yes. The transfer switch is part of the backup-power system. It controls the move from utility power to generator power and back again. We address transfer complaints and perform the functional checks appropriate to the service. Internal energized work stays in the hands of qualified technicians.
Ready when the grid is not
If your generator is overdue, showing a fault, failing exercise, cranking slowly, leaking, making a new noise, or refusing to transfer, call Dave's now. We maintain Cummins and Generac standby systems and find the problems that keep backup power from doing its job.
