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StopWatt FAQ: Simple Answers

Updated October 2026

Here are simple answers to the questions people ask most about StopWatt, based on the seller's FAQ and terms.

Setup

How do I install StopWatt?

Plug it into a standard wall outlet, centrally or near the breaker box, and leave it plugged in. The green light shows it is on.

How many do I need?

One for every 800 to 1,200 sq. ft of home. If you use more than one, spread them out.

Your home

Which homes does it work in?

Standard 110V North American homes, condos, offices and trailers.

Does it work with solar?

The seller says it is safe with solar, but the new version has not been fully tested with solar systems.

What happens in a power cut?

Leave it plugged in. The seller says it carries on working as soon as the power comes back.

Results

How do I check my results?

Compare your kWh before and after, for the same billing period. See our bill tracking guide.

How long should I give it?

The seller asks customers to give it a full 2 months, which matches the 60-day guarantee. Start tracking on day one.

Guarantees and warranty

What guarantees come with StopWatt?

A 60-day money-back guarantee from delivery, and a Power Saving Guarantee that refunds 100%, including shipping, if you have not saved enough in 60 days.

Is there a warranty?

Yes, a 1-year warranty that replaces a broken unit for free. An extended 3-year warranty is optional at checkout.

Support

Email [email protected] or call 833-562-8777.

Learn more: easy ways to lower your electric bill.

See the StopWatt offer

Frequently asked questions

Where should I plug in StopWatt?

A standard wall outlet, centrally in your home or near the breaker box.

Does StopWatt have a warranty?

Yes, a 1-year warranty. An extended 3-year warranty is optional.

How do I contact StopWatt support?

Email [email protected] or call 833-562-8777.

More StopWatt guides

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Independent deals page. Not affiliated with StopWatt. We may earn a commission when you buy through links on this page. Savings are not guaranteed: independent tests of plug-in power savers have found little or no effect on home electricity bills.