What Size Electrical Panel Does Your Houston Home Need?

Panel size is measured in amps, not by how big the box looks. Amps tell you the total power your panel can safely deliver at once. A higher amp rating means your home can run more at the same time.

You may hear the panel called other names. People call it a breaker box, a load center, or a service panel. They all mean the same thing.

Want to check your current size? Look at the main breaker inside the panel for a number like 100 or 200. You can also check your meter for a label like "CL200," which means 200 amps.

Many older Houston homes still run on 60 or 100 amps. That was plenty decades ago. It rarely is today. According to the U.S. Department of Energy, modern households often need more capacity to handle today's higher electrical demands.

Most homes fall into one of four panel sizes. Each one fits a different level of power need. Here is how they compare:

A 200-amp panel is the standard for most homes today. It handles central AC, an electric range, and daily loads with room to spare.

Most panels we install in Houston fall between 100 and 200 amps. The right pick depends on your home and what you plan to add.

Your panel often warns you before it fails. Watch for these common signs:

• Breakers trip often or will not reset.
• Lights dim when the AC or large appliances start.
• No open slots are left to add a circuit.
• The panel feels warm, buzzes, or shows scorch marks.
• Your home still uses fuses or a 60 or 100-amp panel.

Any one of these means your panel is working too hard. An undersized panel is more than a hassle. It raises the risk of an electrical fire. Adding whole-house surge protection can also guard your wiring and devices during storms.

If you spot scorch marks or smell burning, stop and call a licensed electrician. Book an electrical safety check before the problem grows. You can review trusted electrical safety information from the Electrical Safety Foundation International to learn the warning signs.

The most accurate way to size a panel is a load calculation. It is the method licensed electricians trust most.

A load calculation adds up the power your home actually uses. We total the wattage of your appliances and circuits, then divide by 240 to estimate the amps you need. A quick formula gives a rough number, so it can miss the mark.

Here is what we check during a panel assessment:

• Your home's square footage and layout.
• Major appliances like the AC, range, water heater, and dryer.
• Any heavy loads, such as an EV charger or spa.
• Room to grow for future plans.

Square footage gets you close, but your loads decide the rest. Several common Houston features push homes toward 200 amps.

Here is what adds the most demand:

• Central AC. It runs most of the year here and pulls steady power.
• Electric appliances. Ranges, water heaters, and dryers add heavy load.
• EV chargers. Most Level 2 chargers pull 30 to 50 amps on their own.
• Pool or spa equipment. Pumps and heaters draw a lot of power.
• Future plans. Solar or a remodel can raise your needs fast.

Each load stacks on top of the last. A panel that worked five years ago can fall short today.

One homeowner called us to add an EV charger. Their 100-amp panel was already full, so we sized them up to 200 amps.

Sometimes a repair is not enough. When a panel is full, outdated, or unsafe, an upgrade is the safer move.

A panel upgrade replaces your old service with a larger, code-compliant one. Here is what the job includes:

• A new panel sized to your home's real load.
• Fresh breakers wired to your circuits.
• A permit pulled with the City of Houston.
• A final inspection to confirm safe work.

A licensed electrician and a proper permit protect your home and your warranty. Skipping either one puts your safety at risk. The team at Abacus has handled these upgrades for Houston homes for 20+ years.

We answer calls 24/7 and offer same-day service across Houston. When you are ready, our team will size, install, and inspect the right panel for your home.

Get a safe, code-compliant fit today. Call Abacus at (713) 812-7070 for an electrical panel upgrade in Houston.