ServicesGenerator Service & Repair
Generator Service & Repair in Grand Prairie
A standby generator that goes months without running can let you down the day the power fails. We check the battery, fuel supply, controller and transfer switch, repair what has failed and tell you why, so your home stays powered when the grid goes out.
Keeping Your Backup Power Ready to Run
Most generator failures are not the engine. They come from a weak starting battery, a clogged air filter, a gas supply that can't keep up under load, or an automatic transfer switch with burned or corroded contacts. We look at the whole system, from the gas regulator to the breaker that feeds your panel, because a generator that starts but never takes the load is still a failed generator.
North Texas is hard on this equipment. Summer heat inside the enclosure shortens battery life, and ice storms are exactly when your unit has to run for hours. We service with both seasons in mind, so the maintenance happens on a calm day and not in the middle of an outage.
Some units cost more to keep running than they are worth. If yours is one of them, you'll hear that from us directly, along with what new generator installation or a home battery backup system would involve instead.
What a Service Visit Covers
Battery and charger test
We load-test the starting battery and check the trickle charger output. Heat breaks batteries down faster than most owners expect, and a weak one is the most common reason a standby unit won't crank.
Engine wear parts
Fresh oil and a new oil filter go in, and we pull the air filter and spark plugs to inspect or swap them. Liquid-cooled models also get a coolant level and condition check. What's due depends on run hours and the maker's service interval.
Transfer switch inspection
We take the cover off the transfer switch, check each contact for pitting and heat marks, and tighten the line and load lugs to spec. A simulated utility loss then shows whether it switches over and back without hesitation.
Fuel supply check
On natural gas and propane units we check for leaks at the flex line and look at whether the regulator and meter can supply full-load demand. A starved engine surges, then shuts down.
Controller and fault history
We read stored fault codes, verify the exercise schedule, and update settings where needed. The log often shows a problem weeks before it causes a missed start.
Pest and enclosure check
Fire ants nest in warm enclosures and transfer switch cabinets, and their bodies can hold relay contacts open. We clear nests, check for chewed wiring, and make sure vents and louvers are open.
Signs Your Generator Needs Attention
No weekly exercise run
When the unit stays quiet on its scheduled day, the usual causes are a faulted controller or a battery too weak to crank it.
Fault codes or a warning light
Low oil pressure, overcrank and underspeed codes each point to a specific cause. Clearing a code without fixing what set it only pushes the next failure down the road.
Engine running, lights still out
If the generator started but the house never got power, the transfer switch most likely failed to take the load, or a breaker on the generator side tripped.
Stumbling or stalling under load
An engine that falters when the AC compressor or well pump starts usually has a fuel supply or governor problem.
Scorch marks or a burning odor at the switch
Discolored terminals mean a connection is loose or overheating. Turn the unit off at the controller and schedule a visit before you run it again.
How the Visit Goes
- 1
We ask what happened
On the phone we get the make, model and fuel type, plus what you saw or heard. That way we arrive with the likely filters, plugs or battery on the truck.
- 2
Inspect and test under load
We check the engine, battery, fuel and controller, then run a simulated outage so the generator carries real household load through the transfer switch.
- 3
Explain findings before repairs
We show you what we found, including photos of anything inside the enclosure or switch, and give you a written price for the repair. Nothing gets replaced until you approve it.
- 4
Repair, retest and log it
After the work we run the full transfer test again, set the exercise schedule, and leave a note of what was serviced and when the next interval is due.
What Moves the Cost of Generator Work
A routine service and a repair are priced differently, and we tell you which one you're looking at before work starts. You get a written price after diagnosis. These are the things that change it most.
- Unit size and cooling type
- Larger and liquid-cooled generators take more oil, coolant and filters, and more time to service.
- Parts availability
- Common batteries and filters are on hand. Controller boards, transfer switch contactors and some brand-specific parts may need to be ordered.
- Condition of the transfer switch
- Cleaning and retorquing is quick. Replacing burned contacts or a damaged switch is a larger job.
- Fuel system corrections
- If the gas line or regulator is undersized for the unit, correcting it adds work and may involve your gas provider.
- How long it has gone without service
- Units that sat for years often need several wear parts at once, along with cleanup inside the enclosure.
Questions About Generator Upkeep
Something not covered here? (682) 343-9645
How often should a standby generator be serviced?
Once a year in most cases, or earlier if your model reaches its run-hour limit first. After several days of nonstop running in a storm, an oil change may be due right away. We check the hour meter and follow the service chart for your model.
Will you service a generator someone else installed?
Yes. We work on most common air-cooled and liquid-cooled home standby brands, plus the transfer switches and inlet boxes tied to them. Give us the make and model when you book so the right parts are on the truck.
My generator passes its weekly exercise, so why does it fail during an outage?
Exercise runs often happen without any load. The real test is powering your air conditioning, refrigerator and other circuits. A weak fuel supply, a worn transfer switch or a tripping output breaker only appears under that load, so we always test with the house running on the generator.
Do you work on portable generator hookups?
Yes. We inspect and repair inlet boxes, interlock kits and the cord connections feeding your panel. A correct interlock stops the generator from back-feeding the utility line, protecting both you and line crews.
Is it better to repair or replace an older generator?
If the engine is still strong and parts are still available, a repair usually makes more sense. When a unit needs a new controller, major engine work and a new switch at once, that changes. Then we show you the repair price next to the cost of a new installation so you can weigh them and decide.
Get Your Generator Checked Before the Next Storm
Tell us the make, model and what it's doing, and we'll set a time to test it under load and fix what we find.