Do I need an electrician for a whole-home monitor?

Usually yes — sensors clamp inside the breaker panel. Treat panel work as a licensed job unless you are qualified.

Will a monitor lower my bill by itself?

No. It shows you where the money goes; the savings come from what you change afterwards. That is why we pair it with a habit or product change on every guide here.

What is a realistic first finding?

For most homes it is heating and cooling runtime, an old fridge, or a cluster of always-on electronics. The monitor tells you which of the three applies to you.

Buying guide

Best home energy monitors

Every other upgrade on this site is a guess until you can see what your house actually draws.

Explore all products Free guide: 10 key tips

A monitor does not save a single watt on its own. It tells you which of your habits and appliances are expensive, which is the difference between buying the right upgrade and buying an interesting one.

Start whole-home if you want the big picture and the HVAC number; start with a metering plug if you suspect one device.

Last updated 2026-09-15. Savings ranges are estimates based on typical US usage and electricity rates. Your actual result depends on your habits, local rate and how much the device is used — nothing here is a guaranteed saving.

How we chose

Does it show live watts, not just a monthly total?
Can you attribute usage to a device or circuit?
Is the data readable without a spreadsheet?
Does installation match a normal home's skill level?

We don't publish invented test data or guaranteed dollar savings. Where numbers appear, the arithmetic is shown so you can run it on your own bill.

Run your own numbers in the calculator

Questions people ask

Do I need an electrician for a whole-home monitor?: Usually yes — sensors clamp inside the breaker panel. Treat panel work as a licensed job unless you are qualified.
Will a monitor lower my bill by itself?: No. It shows you where the money goes; the savings come from what you change afterwards. That is why we pair it with a habit or product change on every guide here.
What is a realistic first finding?: For most homes it is heating and cooling runtime, an old fridge, or a cluster of always-on electronics. The monitor tells you which of the three applies to you.

Keep reading

Free guide

10 Key Tips to Lower Your Electric Bill

A short, practical PDF you can work through in a weekend. No fluff, no hype — just the changes that move a real electric bill.

The 3 changes that cut the most kWh first
A room-by-room LED swap checklist
How to read your bill and spot the expensive habits
Where phantom loads hide — and how to measure them