Generator Maintenance Pros in Houston, TX

Keep Your Backup Power System Running Like New

Expert Generator Maintenance Services

In Houston, power outages can happen fast and without warning. Whether it’s a rolling blackout, severe thunderstorm, or transformer issue down the block, your standby generator needs to be ready at all times. But staying ready takes more than just a good install, it takes routine maintenance that keeps your system sharp.
At AstroGen, we offer full-service generator maintenance throughout Houston, Humble, Katy, Cypress, The Woodlands, and Sugar Land. From residential setups to large commercial units, we keep standby systems running strong with regular checkups, cleanings, software updates, and repairs when needed. Our plans are designed to extend the life of your equipment and make sure it delivers when you need it most.
If you already have a generator, or are planning to get one, routine service is the key to dependable power. We’ll help you stay ahead of problems and avoid downtime when the lights go out.

Why Generator Maintenance is Important

It’s easy to forget about your generator when it’s not running. But just like any machine, it needs regular attention. Here’s why consistent maintenance is essential:

Avoid Surprise Breakdowns:

Just because your generator worked last time doesn’t mean it’s ready today. Small issues like worn belts or low fluid levels can turn into major failures fast.

Keep Fuel and Batteries in Check:

Batteries lose charge, and fuel can degrade over time. Maintenance helps avoid startup failures and damage to internal parts.

Catch Problems Early:

Our inspections often uncover small issues, like loose wiring or failing sensors, that can be fixed before they cause outages or expensive damage.

Meet Warranty Requirements:

Most generator warranties require proof of regular maintenance. Skipping service might leave you uncovered when something goes wrong.

Protect What Matters:

Whether it’s your home’s HVAC system or your business’s servers, a well-maintained generator keeps essential systems running through any storm or blackout.

Our Generator Maintenance Process

At AstroGen, our maintenance process goes beyond a quick look. We follow a thorough checklist built around your system’s make, model, and use conditions. Here’s what you can expect:

1. Visual and Electrical Inspection

We start by checking the overall condition of your generator. That includes looking for rust, corrosion, fuel leaks, wire damage, pest infestations, and anything out of place. Then we test voltage output, load capacity, and control panel settings to confirm everything’s within spec.

2. Oil and Filter Service

We drain and replace engine oil, then swap out oil, fuel, and air filters with high-quality parts that meet or exceed factory recommendations. This keeps your engine running smooth and prevents performance loss.

3. Battery Check and Replacement

Dead batteries are the number one cause of generator failure. We test voltage, clean terminals, and replace weak or aging batteries before they cause trouble.

4. Coolant and Fuel System Check

We inspect coolant levels and flush the system if needed. For fuel lines, we check connections, valves, and ensure clean delivery whether your system uses propane, diesel, or natural gas.

5. Software Updates and Diagnostics

Modern generators use digital controllers and sensors. We run updates, reset error codes, and log performance data to make sure your generator is operating on the latest settings.

6. Simulated Power Outage Test

We finish every maintenance visit with a real-world simulation. We cut power, activate the generator, and monitor its performance through a full load cycle to confirm it’s ready to step in when it counts.

Is It Time for Generator Maintenance?

Not sure when your system last had a checkup? These signs mean it’s probably overdue:

Startup Takes Too Long: A standby generator should fire up within seconds. If it lags, sputters, or fails, something’s off.

Odd Noises or Smells: Grinding, rattling, or fuel odors are often signs of mechanical issues or leaks.

Warning Lights or Alerts: Flashing lights or error codes mean your generator is asking for help. Ignoring them could lead to shutdown.

Low Power Output: If your generator isn’t holding loads like it used to, there may be voltage issues or fuel delivery problems.

It’s Been Over a Year: Even if everything seems fine, generators need at least one full-service visit every 12 months to stay in shape.

What Routine Maintenance Can Prevent

A simple service visit now can save you from major headaches later. Here’s what maintenance helps you avoid:

Fuel Contamination: Water and sediment can get into fuel tanks, causing poor performance or engine damage.

Battery Failure: Old or discharged batteries won’t hold a charge, which means your generator might not start during a real outage.

Clogged Filters: Dirty air and oil filters reduce airflow and lubrication, putting extra stress on your engine.

Overheating: Lack of coolant or blocked airflow can cause your generator to overheat and shut down.

Code Violations: Outdated wiring, improper fuel lines, or corroded connections could put you out of compliance with local electrical codes.

What Houston Customers Are Saying

Our clients across Houston trust AstroGen because we show up when we say we will, install cleanly, and make sure their generators are truly ready. Whether it’s a small home system or a large commercial setup, we treat every project with care and precision. Check out our reviews to see how others have powered through outages with AstroGen’s help.

“Our power went out during a storm that came through during the night and we lost power. Our Generac generator didn’t startup and threw errors. I called around 9:00 am and the owner, Mason, showed up within the hour and was so great working with us. Unfortunately we have to get the motor replaced, Mason took care of calling Generac to work on getting it replaced through our warranty. We can’t say enough good things about the service we received. We will be using them now on for routine service maintenance. I HIGHLY recommend them.” – Stacy ONeal

“The installation crew was respectful and did a phenomenal job from install to clean up. The service tech came out the next day and did a complete walkthrough with me and answered every question I had. Best choice I made by using Astro Gen to service my house!!! Thank yall again.” – Roman McElfresh

“AstroGen successfully completed the installation and start up of my whole-home generator. I chose Cummins Generator. I am super pleased with the process, the workmanship and the people. I would particularly like to mention @Jose, and @Ethan who were directly responsible for the installation, both are nice and professional, and Caleb who was my main point of contact. Overall, I am satisfied with AstroGen. I have already recommended AstroGen to my neighbor who is scheduled to get his installed in a few weeks.” – Dharmesh Shah

“There are very few companies that truly deserve more than 5 stars. This is one of them. I tried to get generator quotes from several companies. And AstroGen was the only one that got back to me in a timely manner. From the first phone call they were organized, professional and transparent. Kaden came out for out house quote and walked us through options, answered all of our questions and made sure we felt comfortable. Install day was today (even after major storms last night), everything was completed on time and the owner Mason came out and looked everything over and did the final walkthrough. I could not be more appreciative of AstroGen and their team! I would highly recommend to anyone and everyone.” – Cameron Branham

Do You Need Maintenance or a Repair?

Sometimes a generator needs more than just a tune-up. If your system isn’t performing like it used to, we’ll figure out whether it needs a repair or just some maintenance.

Quick Fixes:

Loose wires, dirty sensors, old batteries, these are common and usually solved during a routine service.

Major Repairs:

Fuel system problems, control board failures, and engine issues take more time but can often be fixed without replacing the unit.

Replacements:

If your generator is older than 10–12 years or breaks down often, it might be more cost-effective to upgrade. We’ll give you honest advice on what makes the most sense.

Is It Time for Generator Maintenance?

Not sure when your system last had a checkup? These signs mean it’s probably overdue:

Startup Takes Too Long: A standby generator should fire up within seconds. If it lags, sputters, or fails, something’s off.

Odd Noises or Smells: Grinding, rattling, or fuel odors are often signs of mechanical issues or leaks.

Warning Lights or Alerts: Flashing lights or error codes mean your generator is asking for help. Ignoring them could lead to shutdown.

Low Power Output: If your generator isn’t holding loads like it used to, there may be voltage issues or fuel delivery problems.

It’s Been Over a Year: Even if everything seems fine, generators need at least one full-service visit every 12 months to stay in shape.

Smart Generator Maintenance Tips

Here are a few simple ways to support your generator between professional visits:

Run Monthly Tests: Let your system run for 5–10 minutes every month to keep fluids moving and parts working. This short exercise also helps spot issues early, so you’re not surprised during an actual outage.

Keep It Clear: Remove leaves, dirt, and other debris from around the generator for better airflow and fewer pest problems. A clear space also makes it easier for techs to access your system when it needs service.

Watch for Alerts: Don’t ignore blinking lights or strange smells, they’re signs your system needs attention. Catching these warnings quickly can save you from bigger, costlier problems down the road.

Log Run Time: Keep a simple log of test runs, maintenance, and outages so you can track performance over time. Having a record makes it easier to spot patterns and helps techs diagnose issues faster.

Want to make things easy?

Ask about AstroGen’s scheduled maintenance plans. We’ll remind you when it’s time for service and keep your generator running like new, so you can relax knowing it’s always ready.

Leading Generator Services in Houston, TX

AstroGen does more than just maintenance. We cover the full lifecycle of your generator, from installation to emergency response.

Standby Generator Installation

Need a new system? We design and install automatic generators for homes and businesses, complete with transfer switches, permitting, and fuel hookups.

Commercial Generator Installation

Protect your business with high-output generator systems sized for offices, clinics, and commercial buildings. Seamless installs and fast turnaround.

Generator Repair

If your generator is down or not performing right, we’ll find the issue and fix it fast. We service all major brands and models.

Emergency Generator Service

Power out and your system failed? Our emergency team is on-call 24/7 to troubleshoot and restore your power backup system quickly.

Generator Sales

Looking to upgrade or install for the first time? We sell systems from Generac, Kohler, Cummins, and more. We’ll help you pick the right fit and handle the entire setup.

Generator Maintenance FAQs

How often should I service my generator?

We recommend professional maintenance at least once a year. For high-use or commercial systems, twice a year is better.

Can I do maintenance myself?

You can check for debris and run monthly tests, but most servicing should be handled by a licensed technician to protect the system and warranty.

Do you offer maintenance plans?

Yes. We offer flexible plans for homes and businesses that include reminders, seasonal tune-ups, and discounted repairs.

Which brands do you service?

We maintain Generac, Kohler, Cummins, Briggs and Stratton, and nearly all other major generator brands.

Can you check a generator you didn’t install?

Absolutely. We service systems installed by other companies and offer inspections to bring them up to standard.

Book Your Generator Maintenance with AstroGen

Waiting until something breaks is never the best plan. Let AstroGen handle the maintenance, so your generator stays reliable through every storm and outage.

Call today or schedule service online, we’ll make sure your backup power system is ready when you need it most.