Should I Upgrade My Electrical Panel? What You Should Know Before a New AC Unit Installation

When it’s time to replace your old air conditioner, your first thought is probably about summer comfort. But here’s something you may have overlooked: Today’s AC systems often demand significantly more electrical capacity than the units they replace. Before your new AC unit installation is complete, your home’s electrical system may need some attention. Planning ahead for a potential panel upgrade can mean the difference between a smooth installation and a frustrating, costly problem down the road.

Why New AC Systems May Require More Power

AC units these days…

Modern high-efficiency air conditioners are impressive pieces of tech compared to older models. Variable speed compressors and smart controls are just two of many innovations that have taken the industry by storm recently, but here’s the catch: They come with updated electrical requirements.

Why might your future system draw more power than your current one? A few reasons:

• Higher efficiency ratings demand specific electrical capacity: Units with the recommended SEER rating of 15 or higher are engineered for precision. This precision requires a stable, properly sized electrical supply.
• Larger systems for larger homes: If you’re upgrading to a unit with greater cooling capacity to keep up with an addition or finished basement, you’re also increasing the electrical load on your home.
• Modern equipment versus older wiring: Older homes may have wiring that was perfectly adequate for a 1990s-era system, but simply isn’t rated for a new AC unit installation.

According to the U.S. Department of Energy, air conditioners account for about 12% of the average household’s electricity in the U.S., costing homeowners roughly $29 billion annually. Getting a panel upgrade before you install that new system is a great way to protect your investment and your wallet.

Signs Your Electrical System May Need an Upgrade

Should I upgrade my electrical panel?

If you find yourself asking this question, chances are something caused you to ask it. In that case, you probably should, especially if your current setup has been around for a while. Here are a few red flags to watch out for:

• Frequent breaker trips when the AC is running: This is a solid indicator of what the culprit is, but it’s not like you can just not have an AC system (Maryland summers can be harsh). And if you’re already having this issue, a new AC system will only make the problem worse.

• An outdated or undersized electrical panel: Panels that are 100 amps or less aren’t able to support the standard suite of modern appliances found in American households. 

• Old wiring that isn’t up to present code: Knob-and-tube or aluminum wiring found in older homes would pose safety risks when they’re paired with modern AC systems.

• No available space for a dedicated circuit: Every air conditioning unit should have its own circuit. Panel already maxed out? It’s time for a panel upgrade that will allow you to remedy this issue.

Common Electrical Upgrades for New AC Installations

A new AC unit installation will likely go hand-in-hand with at least one of the following electrical upgrades:

Dedicated Circuit Installation

As we discussed above, it’s imperative for every AC unit to have a dedicated circuit. This helps it operate efficiently and safely and prevents it from competing with power from other appliances.

Panel Upgrade

An upgrade to a panel that supports 200 amps gives you the capacity you need to support modern equipment in tandem with everything else in your home. A licensed Holtzople electrician can handle upgrades, inspections, and anything else that will bring your electrical system into the present day.

Wiring and Disconnect Box Updates

The small electrical box mounted somewhere near your outdoor AC unit is called the disconnect box, a safety device that allows you to shut off power to the unit manually. If it isn’t properly rated for a new system, it should be replaced to meet current standards.

Surge Protection

Modern HVAC systems contain sensitive electronics. Adding a whole-home surge protector shields them from voltage spikes that can shorten the life of your equipment significantly.

Why Electrical Upgrades Matter for Safety and Performance

Skipping necessary electrical work is inconvenient and, much more importantly, potentially dangerous. If an overloaded circuit generates enough heat, it could cause an electrical fire. We don’t need to go into detail about what could happen at that point. In addition, undersized wiring means your AC is working harder than it needs to to make you comfortable. The result is high energy costs and premature expiration of components.

Still wondering why professional service matters?

• Safety: Wiring that fits your home’s electrical needs eliminates the risk of overheating and, in turn, electrical fires.

• Efficiency: We ensure your AC runs as intended, without voltage fluctuations or performance dips.

• Longevity: When equipment operates within its parameters, it simply lasts longer, which can save you big in the long-term.

The Bottom Line: A Panel Upgrade Could Save Your Home

A panel upgrade completed alongside your HVAC project ensures your home is protected from overloads, electrical fires, and other shocking issues, all while guaranteeing your continued comfort.

Holtzople Heating, Cooling & Electrical Services is ready to help you get your home ready for its new system! Let us come check out your wiring and devices and provide the solution that’s best for your house.