When the Texas temperatures soar into triple digits and the power grid starts to strain under the demand, the last thing you want is for your air conditioning to fail. For residents who have invested in a whole house generator, staying cool and safe during an outage isn’t just a luxury—it’s peace of mind. With the right generator size, installation, and setup, your air conditioning system can continue to run uninterrupted even when the grid goes down. Zellner Electric has experience providing seamless backup power solutions—including air conditioner compatibility—so your home remains comfortable no matter what.
Standby Generators and AC Units: How They Work Together
The proper sized standby generator, hooked up with an automatic transfer switch, can detect the loss of power and automatically switch your home’s electrical system over to generator power—typically in 10 seconds or less. That way, your HVAC system continues to run with minimal disruption, keeping indoor temperatures at safe and livable levels.
The majority of Texas homes require at least a 22kW or 24kW standby generator to meet the needs of central air conditioning, large appliances, and essential circuits simultaneously. Zellner Electric offers in-home consultations to assess your personal load requirements so that you buy a generator with sufficient power to meet the needs of your home. We handle everything from system design and permitting to the final start-up and testing so that you’re never in the dark.
Why The Right Size Matters
The incorrect size generator is the difference between total comfort and annoying restrictions. Too small, it will not run your AC. Too large, you may spend more than necessary on equipment and gasoline. Our experts perform professional load calculations to match your home’s square footage, HVAC needs, and lifestyle. Whether you use a single central AC or zoned cooling, we’ll make sure your home generator is set up to deliver continuous comfort when it counts.
Routine Maintenance = Reliable Performance
Even a high-quality standby generator needs routine maintenance to operate reliably—especially when powering something as essential as your air conditioning system. Without regular inspections, oil changes, battery testing, and system diagnostics, a generator can let you down when you need it most.
As a Generac Certified Dealer, Service, and Installer, Zellner Electric offers professional generator maintenance agreements to ensure your equipment is ready year-round. Our maintenance includes:
- Complete-system annual inspections
- Oil and filter changes
- Load testing
- Battery and connection testing
- Firmware/software updates (for WiFi-enabled systems)
We also stock OEM parts and conduct warranty repairs on Generac equipment, so you’re covered for everything from routine service to surprise repairs.
Professional Installation Makes All the Difference
Hooking up your HVAC system to a whole house generator is not as simple as just plugging in some wires. Safe and proper installation includes installing a transfer switch, balancing the load, if needed upgrading your electrical panel, and grounding the system to code. Our trained, licensed electricians handle these details so safety, reliability, and local code conformity are guaranteed.
Zellner Electric is an authorized Generac dealer for residential generators sales, installation, and maintenance.
Stay One Step Ahead of the Next Power Outage
Extreme heatwaves, thunderstorms, and unexpected utility outages are all part of life in Central Texas. But with a professionally installed standby generator from Zellner Electric, you’ll never have to worry about losing your cool—literally.
From consultation to turnkey installation and beyond with continued service, we’re your partner in investing in your home’s safety and comfort. Our 5-star service and decades of local experience have earned us the trusted choice for generator installation in New Braunfels and the surrounding areas.
Stay Cool with Zellner Electric
Ready to power your home’s AC with a reliable backup system? Call Zellner Electric today and schedule your FREE on-site consultation. Let our staff of experts help you choose the right whole house generator for your needs and keep your home cool, safe, and energized—no matter the weather.
If you need a backup generator for your home in New Braunfels, Austin, Boerne, Buda, Bulverde, Canyon Lake, Cibolo, Dripping Springs, Garden Ridge, San Antonio, San Marcos, Seguin, Marion, Selma, Spring Branch, Wimberley, the Hill Country, or anywhere else in South Texas, give us a call at 830.515.5953.
