What you need to know before adding Level 2 charging to your Central Texas home.

Austin is one of the fastest-growing EV markets in the country. From Teslas in Mueller to Rivians in South Austin and Ford Lightnings in Lakeway, more homeowners are making the switch to electric vehicles. But what many new EV owners discover—often too late—is that their home’s electrical system isn’t ready for a charger.

Before you schedule a Level 2 charger installation, here are the upgrades and safety checks every Austin homeowner should consider.

Your Electrical Panel Comes First

Most EV chargers require a dedicated 40–60 amp circuit, far more than most appliances. But many Austin homes—especially those built before the 2000s—don’t have space or capacity for that extra load.

You may need a panel upgrade if:

• Your panel is 100 amps or below

• You’re already using most breaker slots

• Lights flicker when large appliances turn on

• Your AC reduces available power during summer peaks

A panel upgrade increases total capacity and adds room for the new EV circuit—preventing nuisance trips and dangerous overloads.

Check If Your Garage (or Parking Area) Has the Right Wiring

Many Austin garages were never wired with future vehicles in mind. EV chargers need 240V wiring, which older homes often lack.

Most homes will need:

• A new 240V line run to the garage or driveway

• Upgraded conduit for outdoor installations

• GFCI protection to meet Austin electrical code

• Proper surge protection

Good news: once installed, the higher-voltage line future-proofs your home for additional EVs or faster chargers later on.

Do You Need a Load Calculation?

Austin’s hot summers push electrical systems to their limits. Between HVAC, electric ranges, water heaters, and now EV chargers, you need to know if your panel can safely handle the demand.

A licensed electrician performs a load calculation to determine whether your home can support a charger without tripping breakers or creating fire risk.

This step is essential for:

• Older neighborhoods (Hyde Park, Brentwood, Crestview)

• Homes with electric HVAC + electric appliances

• Homes built in the 70s–90s

• Additions or remodeled homes

Is Your Surge Protection Up to the Task?

EV chargers are sensitive electronics—and Texas is notorious for lightning strikes and power fluctuations.

Every EV-ready home should have:

• Whole-home surge protection at the panel

• Point-of-use surge protection for the charger

• A properly grounded system

These small upgrades protect your EV charger (and your vehicle) from thousands of dollars in potential damage.

Outdoor Installations Need Weather-Rated Equipment

Many Austin homeowners mount EV chargers outdoors. That means rain, heat, and Texas sun exposure must be factored in.

Your installer should ensure:

• NEMA 3R or NEMA 4 weather-rated equipment

• UV-resistant wiring and conduit

• Proper drainage and placement

• GFCI outdoor protection

• Secure mounting into structural surfaces

This keeps your system safe and code-compliant year-round.

Consider Future Tech Before You Install

More Austin homeowners are planning ahead for:

• Second EVs

• Faster Level 2 chargers

• Battery backup systems

• Solar integration

• Load-sharing chargers

A smart installation today prevents costly rework later.

Get EV-Ready With Austin Aztec Electric

Installing an EV charger isn’t just a plug-and-play job—it’s a significant electrical upgrade. Our team ensures your home is safe, compliant, and ready for fast, reliable charging.

💡 Panel upgrades
⚡ Dedicated 240V circuits
🔌 Level 2 charger installation
🌩️ Surge protection
📐 Load calculations
🏡 Serving Austin, Round Rock, Pflugerville, Cedar Park & surrounding areas

When you’re ready to upgrade to convenient home charging, we’ll make sure your system is built to handle it.