Generac Generators: Old vs. NextGen — What’s Really Changed?
If you’ve been considering a standby generator, you’ve likely come across Generac’s Guardian series. For years, it has been one of the most trusted systems on the market.
However, Generac’s new NextGen lineup is not just an update—it’s a complete redesign.
So, what actually changed? And more importantly, does it matter for your home?
Let’s take a closer look.
🔧 The Older Models (Guardian Series)
Older Generac Guardian standby generator with cover removed, showing internal engine and components during installation
The Guardian series has been the backbone of residential backup power for a long time. Because of that, many homeowners still rely on it today.
In general, these systems are known for:
- Proven reliability across millions of installs
- A traditional carbureted fuel system
- The Evolution controller with an on-unit display
- Optional Wi-Fi monitoring
In other words, it’s a dependable system that has done its job well for years.
🚀 The New NextGen Generators
Generac NextGen standby generator delivering efficient, reliable whole-home backup power
By comparison, the NextGen models represent a major leap forward. Instead of small upgrades, Generac reworked how the system operates from the ground up.
So, what’s different?
First, smarter engine technology.
Instead of a carburetor, these units use electronic fuel and ignition control. As a result, they run more efficiently and start more reliably—especially in cold weather.
Next, built-in connectivity.
Unlike older systems that rely on Wi-Fi, NextGen units come standard with cellular monitoring.
In addition, a new control system.
The updated controller is designed for app-based interaction. This means fewer physical controls on the unit and a more modern user experience.
At the same time, diagnostics have improved.
The system now monitors oil levels, fuel pressure, and performance in real time.
Finally, more available power.
With outputs up to 28kW, these units can handle more of the home without stepping up to a liquid-cooled system.
🧊 Real-World Differences You’ll Notice
While specs are important, what really matters is how the system performs day to day.
For example:
- Cold weather starts are more reliable
- Maintenance intervals are longer
- Service issues are easier to diagnose
- Overall performance feels more consistent
- Easier to replace parts
As a result, homeowners tend to experience fewer surprises when they need power the most.
💡 Our Take at Benfield Electric
Overall, the NextGen systems are a meaningful upgrade. Not only are they more efficient, but they also reduce many of the common issues we’ve seen over the years.
That said, the Guardian series still has its place. In certain situations, it remains a practical and cost-effective option. Please note supplies of these units are limited and when they run out the only option is the NextGen units.
⚡ Thinking About Backup Power?
Whether you’re upgrading an older unit or installing a generator for the first time, choosing the right system matters.
If you’re exploring your options, take a look at our Why Choose Benfield Electric as Your Trusted Generac Dealer or learn more about our generator maintenance to keep your system running at its best.
And if you’re ready to move forward, we’re here to help guide you through it.
📞 Reach out to Benfield Electric to schedule a consultation.