The guarantee is the product here
StopWatt is a compact device you plug into a wall outlet, marketed to smooth «dirty» electricity so less is wasted. We cover this category with open skepticism, and that shapes how this page is written: the specification is short, the physics section is long, and the returns window is the part we'd actually buy it for.
- Plugs in and runs silently — no fans, no app, no upkeep
- Maker's sizing: one unit per 800–1,200 sq ft
- Every savings figure on the official page is a manufacturer claim
- 60-day money-back guarantee — long enough for two billing cycles
What your meter actually bills you for
Residential electricity meters measure real power — the kilowatt-hours your appliances genuinely consume. Devices in this category are marketed on power-factor correction or «dirty electricity», which are real electrical concepts, but ones that affect industrial billing and equipment stress rather than a household's kWh total. That is the honest starting point, and no amount of testimonial changes it.
So why is this page here at all?
Because the offer contains something most of this category avoids: a real returns window, and a price low enough that testing it costs almost nothing but attention.
If you want to try it, run the experiment properly. Take your last two bills, plug it in, change nothing else — no new appliances, no seasonal heating shift — and compare the next two bills on kWh consumed rather than dollars, since tariffs move on their own.
If the number doesn't move, send it back inside the window. That is a legitimate way to buy a product whose mechanism you doubt, and it's the only way we'd recommend buying this one.
The numbers, plainly
- Type
- Plug-in wall device
- Sizing guidance
- One unit per 800–1,200 sq ft, per the maker
- Operation
- Silent; no fans, apps or maintenance
- Claimed mechanism
- Current stabilisation / reduction of wasted electricity — manufacturer's claim
- Independent testing
- None published
- Power draw of the device itself
- Not published on the official page
- Rating on the official page
- Manufacturer-published, not third-party
- Guarantee
- 60-day money-back
«Independent testing: none published» is not an oversight on our side. We looked, and the savings figures on the page trace back to the seller.
Our position, stated plainly. We have not lab-tested this device and we don't call products scams without testing them. What we can say is that the category's savings claims routinely outrun established residential electrical physics, and that the rating shown on the official page is published by the manufacturer rather than verified by a third party.
What genuinely protects you is the combination of a low price, a 60-day window, and your own before-and-after bills. Buy it as an experiment with a deadline, or don't buy it.
Pricing on the official store
Prices as listed at the official store, sized by home area rather than by pack.
The sizing is the maker's own guidance, not a measured figure. Since the mechanism is what's in question, buying more units multiplies the cost of the experiment rather than its likelihood of working.
Check current pricing → Opens the official StopWatt store · We may earn a commission
Questions worth asking
Will it lower my electricity bill?
We can't tell you it will, and the physics counsels skepticism: residential meters bill the real power your appliances consume, and devices marketed on power-factor or «dirty electricity» correction are not established to reduce that figure for a household. If you try it, compare two or three bills before and after on kWh, changing nothing else, inside the 60-day window.
Is StopWatt a scam?
We don't use that word for a product we haven't lab-tested, and the offer includes a real money-back guarantee, which outright scams typically avoid. What we will say: the savings claims outrun established physics, the rating on the page is manufacturer-published, and your protection is the guarantee plus your own bills — not the marketing.
How many units would I need?
The maker suggests one per 800–1,200 sq ft. Our view: if you're testing a mechanism you're unsure about, test it with one. Three units triples the outlay without changing whether the underlying claim holds.
What is the guarantee?
A 60-day money-back guarantee. That's long enough to cover two billing cycles, which is exactly the window you need to run an honest before-and-after comparison. Keep your order confirmation.
Buy the experiment, not the promise
Low price, real window, doubtful mechanism. If you test it properly and the kWh don't move, send it back.
Go to the official store → We may earn a commission at no extra cost to you