What is included in a standby generator maintenance visit?

A standard TXEN Solar generator maintenance visit includes: engine oil and filter change, air filter inspection and replacement, spark plug inspection and replacement, coolant level check, battery condition test, fuel system inspection, transfer switch operation test, load bank test, control panel diagnostics, and a full written service report.

Generator Maintenance & Service San Antonio, TX | TXEN Solar

Veteran Owned San Antonio, TX & Surrounding Areas All Brands Serviced

Standby Generator
Maintenance & Service
in San Antonio, TX

A standby generator is only reliable when it's properly maintained. TXEN Solar provides professional generator maintenance, load testing, and repair for whole-home standby systems and solar + generator hybrid installations throughout San Antonio — all brands, all makes.

📅 Schedule Generator Service 📞 (210) 516-1604

✔ Standby & Hybrid Systems

✔ All Brands — Any Installer

✔ Annual & Pre-Storm Service

✔ Residential & Commercial

All

Generator Brands

20+

Years Experience

Annual

Service Recommended

Solar+

Hybrid Integration

Local

San Antonio Based

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Preparing for storm season? Don't find out your generator doesn't work when the power goes out.

San Antonio's severe weather season runs spring through fall. A pre-season generator service from TXEN Solar ensures your system starts, transfers, and runs at full load when you need it most. Schedule a pre-storm tune-up →

Book Service

TXEN Solar technician performing annual maintenance on a standby generator in San Antonio Texas

Any Brand.Any Installer.

San Antonio Generator Service Experts

Is Your Generator Actually
Ready for the Next Outage?

Standby generators run automatic self-tests weekly — but a brief weekly test at no load is not the same as a full maintenance inspection. Oil degrades. Filters clog. Batteries lose charge. Fuel goes stale. Transfer switches develop faults. Any one of these issues can cause a generator to fail the moment the grid goes down.

TXEN Solar provides professional standby generator maintenance for San Antonio homes and businesses — all brands, including systems installed by other contractors. We also specialize in solar + generator hybrid system integration and maintenance, ensuring all components of your energy backup strategy work together seamlessly.

✔ Standby generator maintenance — all brands
✔ Solar + generator hybrid system service
✔ We service systems installed by other companies
✔ Certified veteran-owned local company, San Antonio TX
✔ Annual, pre-storm, and post-outage service available

Schedule Generator Service 📞 Call Us Now

What We Service

Complete Generator Maintenance
From Top to Bottom

Every TXEN Solar generator maintenance visit follows manufacturer-recommended service procedures and covers all critical systems — engine, electrical, fuel, and controls.

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Engine & Fluid Service

The heart of any standby generator is its engine. We service all engine wear items on their recommended intervals to prevent the most common cause of generator failure — neglected fluids and worn consumables.

▶ Engine oil drain and refill (manufacturer-spec oil)
▶ Oil filter replacement
▶ Air filter inspection and replacement
▶ Spark plug inspection and replacement
▶ Coolant level check and top-off (liquid-cooled units)

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Electrical & Battery Systems

Generator electrical failures — especially battery failures — are the leading cause of a generator not starting when the grid goes down. We test and verify every electrical component.

▶ Battery load test and terminal cleaning
▶ Battery charger function verification
▶ Voltage and output load test
▶ Control board diagnostics and fault code review
▶ Wiring and connection inspection

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Transfer Switch Service

The automatic transfer switch (ATS) is what disconnects your home from the grid and connects it to the generator within seconds of an outage. A faulty ATS means your generator runs but your home stays dark.

▶ ATS operation and switching test
▶ Transfer time verification
▶ Contactor condition inspection
▶ Wiring and connection torque check
▶ Manual override function test

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Fuel System Inspection

Stale fuel, clogged fuel lines, and failing fuel regulators are silent killers of generator reliability. Our fuel system inspection ensures clean, stable fuel delivery from tank to combustion chamber.

▶ Fuel line and connection inspection
▶ Gas pressure test (natural gas / LP)
▶ Fuel regulator condition assessment
▶ Carburetor inspection (air-cooled units)
▶ Fuel shutoff valve operation test

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Load Bank Testing

A generator that runs at no load during weekly self-tests may still fail under real demand. Load bank testing exercises your generator at its actual rated capacity — the only true test of whether it will perform when your home needs it.

▶ Load bank test at rated capacity
▶ Voltage and frequency stability check under load
▶ Operating temperature monitoring
▶ Run time and performance logging
▶ Recommended by NFPA 110 for standby systems

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Written Service Report

Every TXEN Solar generator maintenance visit concludes with a written service report documenting all work performed, any concerns identified, and recommended follow-up. This report also serves as proof of maintenance for warranty purposes.

▶ All service items documented
▶ Any findings and recommendations noted
▶ Proof of maintenance for warranty purposes
▶ Copy provided to homeowner
▶ Follow-up scheduling recommended as needed

Brands We Service

We Maintain & Repair All Major Brands

Whether your generator was installed by us or someone else, our team services all major standby generator manufacturers.

Authorized Dealer

Briggs & Stratton

Factory-Certified Service

Generac

All Models Serviced

Kohler

All Models Serviced

Cummins / Onan

All Models Serviced

Champion

All Models Serviced

Honeywell

All Models Serviced

Also service:

GE / Eaton Winco Gillette Westinghouse DuroMax

Don't Skip Service

What Happens When You
Skip Generator Maintenance

Generator failures during outages are almost always preventable. These are the most common causes — every one of them is caught during a routine maintenance visit.

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Dead Starting Battery

Generator batteries are often overlooked until they fail. A battery that holds a charge during weekly self-tests can fail under the cold-cranking demand of a real start. Battery testing is part of every TXEN service visit.

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Stale or Contaminated Fuel

Propane and natural gas lines can develop moisture, debris, or pressure issues. A fuel system that's never been inspected is a reliability risk — especially after months of only brief weekly test cycles.

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Degraded Engine Oil

Engine oil breaks down over time even without high-mileage use. Running a generator on degraded oil during an extended outage accelerates wear and risks engine damage that's far more costly than an oil change.

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Transfer Switch Failure

An ATS that has never been load-tested may fail to switch, leaving your home without power even if the generator is running. Transfer switch faults are a common and entirely preventable failure mode.

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Voided Warranty

Most major generator manufacturers — including Generac and Kohler — require documented annual maintenance to maintain warranty coverage. A single skipped service year can void your protection when you need it most.

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Emergency Repair Costs

A $300 annual maintenance visit prevents $2,000+ emergency repairs. Neglected generators don't fail gradually — they fail completely, at the worst possible time, with emergency service rates to match.

Schedule Annual Service Now

Solar + Generator Integration

The Ultimate Backup System:
Solar + Battery + Generator

For San Antonio homeowners who want the highest level of energy resilience, a three-layer system — solar panels, battery storage, and a standby generator — provides protection for any outage scenario, from a brief afternoon storm to a multi-day grid failure.

TXEN Solar specializes in designing, installing, and maintaining solar + generator hybrid systems. We ensure all three components are correctly integrated and that each layer hands off to the next seamlessly — with no gaps in your coverage.

✔ Solar panels handle daytime energy generation
✔ Battery storage bridges nights and short outages
✔ Generator activates for extended outages when batteries are depleted
✔ All three systems maintained by one trusted local team
✔ We integrate with existing generators of all brands

Discuss a Hybrid System View Battery Storage

☀️

Layer 1 — Solar Panels

Generates clean electricity during daylight hours. Powers your home directly and charges the battery bank.

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Layer 2 — Battery Storage

Stores excess solar energy for nighttime use and short outages. Activates automatically when the grid goes down.

↓

⚙️

Layer 3 — Standby Generator

Activates automatically when batteries are depleted during extended outages. Runs on natural gas or LP — no fuel runs needed.

Result: Continuous Power — Any Outage Scenario

Service Area

Generator Service Across
San Antonio & Surrounding Areas

TXEN Solar provides standby generator maintenance and service throughout Bexar County and the greater San Antonio metro for residential and commercial customers.

San AntonioBexar County, TX

SchertzGuadalupe County, TX

ConverseBexar County, TX

BoerneKendall County, TX

New BraunfelsComal County, TX

SeguinGuadalupe County, TX

HelotesBexar County, TX

Leon ValleyBexar County, TX

Universal CityBexar County, TX

CiboloGuadalupe County, TX

SelmaBexar County, TX

Live OakBexar County, TX

FloresvilleWilson County, TX

PleasantonAtascosa County, TX

LytleAtascosa County, TX

HondoMedina County, TX

Don't see your city? Call (210) 516-1604 — we likely serve your area.

Our Process

Simple to Schedule. Thorough When We're There.

Scheduling generator maintenance with TXEN Solar is straightforward — and every visit follows a consistent, comprehensive service checklist.

Schedule Online or by Phone

Book your service visit online or call TXEN Solar. We'll confirm your appointment quickly.

Pre-Visit System Review

We review your generator's make, model, and service history before arriving with the right parts and tools.

Full Maintenance Service

We complete all engine, electrical, fuel, and transfer switch service items on your generator.

Load Test & Verification

We test your generator under load to confirm it performs at rated capacity and transfers correctly.

Written Report Provided

You receive a complete service report documenting all work done and any recommendations for follow-up.

Your Generator Should Be Ready
Before the Outage — Not After.

Annual maintenance is the single most important thing you can do to ensure your standby generator performs when you need it. TXEN Solar makes it easy — fast scheduling, all brands, all San Antonio and surrounding areas.

Schedule Generator Service 📞 (210) 516-1604

How often should a standby generator be serviced? +

Most manufacturers — including Generac and Kohler — recommend annual professional maintenance. For generators in heavy-use climates like San Antonio, or those that run for extended periods during storm season, a pre-season inspection is also advisable. NFPA 110, the standard for emergency and standby power systems, also recommends annual load testing. TXEN Solar follows manufacturer service intervals for every brand we service.

What's included in a TXEN Solar generator maintenance visit? +

Every visit includes: engine oil and filter change, air filter inspection and replacement, spark plug inspection and replacement, coolant check (liquid-cooled units), battery load test and terminal cleaning, battery charger verification, fuel system inspection, automatic transfer switch test and transfer time verification, load bank test at rated capacity, control board diagnostic review, and a written service report. We follow the manufacturer's recommended service schedule for your specific generator model.

Do you service generators you didn't install? +

Yes. TXEN Solar services standby generators of all brands regardless of who installed them. We work on Generac, Kohler, Briggs & Stratton, Cummins, Champion, and other major brands. If your generator was installed by another contractor and you need a new service provider, we can take over your maintenance going forward.

My generator runs its weekly self-test fine — do I still need professional maintenance? +

Yes — and this is the most common misconception about generator maintenance. A weekly self-test runs the engine for a few minutes at no load. It does not test the battery under cold-cranking conditions, verify transfer switch performance under real load, catch oil degradation, or identify fuel system issues. The NFPA 110 standard specifically requires monthly tests at 30% load and annual load bank tests at full rated capacity for a reason — no-load self-tests are not sufficient.

Can you integrate my existing generator with a new solar system? +

In many cases, yes. TXEN Solar specializes in solar + generator hybrid systems. We can evaluate your existing standby generator and design an integration with your new or existing solar panels and battery storage — creating a three-layer system that provides continuous power through any outage scenario. Visit our battery storage page for more information on hybrid system design.

What does a load bank test actually do? +

A load bank test exercises your generator at its actual rated capacity — simulating real home or business demand. It verifies that the generator can sustain voltage and frequency stability under full load, identifies performance issues that only appear under real demand, and exercises the engine thoroughly (unlike brief no-load self-tests). It's the most accurate test of whether your generator will actually handle your home's power needs during an extended outage. The NFPA 110 standard recommends annual load bank testing for all standby power systems.

What happens if my generator fails to start during an outage? +

Call TXEN Solar at (210) 516-1604 and we'll schedule a diagnostic service call as quickly as possible. A generator that fails to start has almost always failed for a preventable reason — dead battery, stale fuel, oil pressure fault, or transfer switch issue. We'll diagnose the root cause, repair it, and provide a written report so you know exactly what happened and what we did to fix it.

Does skipping maintenance void my generator warranty? +

Yes, it can. Most major generator manufacturers — including Generac and Kohler — require documented proof of annual professional maintenance to maintain warranty coverage. A single skipped service year can void your warranty coverage on repairs that would otherwise be covered. TXEN Solar provides a written service report after every visit that documents all work performed — exactly what you need to maintain your warranty.

Schedule Generator Service

Get Your Generator Ready —
Before You Need It.

TXEN Solar provides professional standby generator maintenance for San Antonio homes and businesses. We service all brands, work on systems we didn't install, and provide a written service report documenting everything we do. Fast scheduling, honest pricing, no runaround.

Our local experts answer the phone. When you call TXEN Solar, you're talking to the people who will show up at your property.