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StopWatt

Comparison

StopWatt vs Pro Power Save

Pro Power Save is another plug-in device frequently mentioned alongside StopWatt in search results. This page compares publicly evident, verifiable attributes — not invented lab scores — so you can make an informed choice about where and what to buy. As with any comparison in this crowded category, the honest answer starts with acknowledging what nobody can prove without controlled, independent testing.

By the StopWatt official store teamUpdated

  • 60-day money backTest it for a full billing cycle
  • Free worldwide shippingShips in 1–2 business days
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  • Human supportReal people, real replies

Quick answer

No, they are different products from different sellers. We do not have visibility into Pro Power Save's manufacturing, testing or support practices.

What each product is described as

StopWatt is a plug-in power-factor correction unit for 90V–250V outlets that uses capacitors to smooth current drawn by inductive household loads like motors and compressors. Full specs are on our specifications page.

Pro Power Save is marketed, per its own sellers, as a similar category of plug-in energy device. We have not tested a Pro Power Save unit ourselves and do not repeat unverified savings claims made about it.

Full spec and feature comparison

AttributeStopWatt (official store)Pro Power Save (as advertised)
Form factorSmall plug-in unit, indicator lightPlug-in unit, per seller listings
Claimed technologyCapacitor-based power-factor correctionSimilar plug-in claims per seller marketing
Outlet compatibility90V–250V standard household outletNot independently verified; check the listing
Bundle pricing1x $44.10 / 2x $88.20 / 3x $105.84, shown up frontBundle discounts vary by landing page
ShippingFree worldwide shipping, 1–2 business day dispatchVaries by seller and warehouse location
Return policy60-day money-back guarantee, published site-wideVerify specific terms directly with that seller before buying
Checkout transparencyFixed total, no forced upsellsCheck for added fees or subscriptions at checkout
Support contactsupport@getstopwatt.net and contact pageVaries by seller

StopWatt: strengths and limitations

Where StopWatt is strong

  • Fixed bundle pricing published on every page, not just the ad you clicked
  • 60-day money-back guarantee on the purchase price
  • Free worldwide shipping, 1–2 business day dispatch
  • No third-party reseller markup; sold direct

What to keep in mind

  • No fixed savings-percentage guarantee, because US meters bill real power (kWh)
  • Most relevant for motor-heavy homes (HVAC, pumps, workshop tools)
  • One unit typically covers a limited area; larger homes may need multiples

What neither product changes

Any plug-in power-factor device, StopWatt included, works by smoothing reactive current near the outlet. It does not alter how your electric meter records kilowatt-hours. Because most US homes are billed on real power (kWh), results vary by household and may be minimal in homes with mostly resistive loads (ovens, baseboard heat, incandescent lighting). Read more on our page about whether StopWatt really works.

Due diligence checklist for either product

  • Confirm the price shown on the ad matches the price at final checkout.
  • Read the return policy before paying, not after a problem arises.
  • Avoid pages that only accept payment methods without buyer protection.
  • Treat any 'as seen on TV' or celebrity-endorsement claim as unverified unless confirmed by the celebrity's own channels — see our Shark Tank page for how we handle that specific claim about StopWatt.
  • Check that the seller lists a real company name, not just a generic storefront brand.

How to choose between StopWatt and Pro Power Save

  • If you want a published, fixed 60-day guarantee and fixed pricing, that's what StopWatt's official store provides on every page.
  • If a seller's terms for Pro Power Save aren't in writing anywhere before checkout, treat that as a real risk, not a minor inconvenience.
  • If your home is mostly resistive load (electric ovens, baseboard heat), any plug-in power-factor device is less likely to matter — consider alternatives first.
  • If your home has meaningful motor load (HVAC, well pump, pool pump, workshop tools), a power-factor device is more relevant to test.

Buying from the official StopWatt store

This is the authorized storefront for StopWatt, with fixed pricing and no reseller markup. See bundle pricing for the full breakdown.

Every order from this official store includes free worldwide shipping, 1–2 business day dispatch, and a 60-day money-back guarantee on the purchase price.

60DAYS

60-Day Money-Back Guarantee

Test StopWatt for a full billing cycle. Return it within 60 days of delivery for a refund of the purchase price.

Issued by the official StopWatt store · Refund of the purchase price

Frequently asked questions

Is Pro Power Save the same company as StopWatt?
No, they are different products from different sellers. We do not have visibility into Pro Power Save's manufacturing, testing or support practices.
Which device should I buy?
We can only speak confidently about StopWatt, which we sell directly and back with a 60-day guarantee. For any other product, verify the seller's own written policies first.
Will either device cut my bill by a guaranteed percentage?
No responsible seller can promise that for a residential kWh-billed meter. Treat any fixed savings-percentage claim as marketing, not a measurement.
What happens if StopWatt doesn't help in my home?
Return it within 60 days of delivery for a refund of the purchase price.
Does Pro Power Save publish independent lab results?
We are not aware of any independently verified lab testing published by Pro Power Save that we can cite, and we have not conducted our own tests on their hardware.
How is StopWatt priced compared to Pro Power Save?
StopWatt is fixed at $44.10 for one, $88.20 for two, and $105.84 for three units, shown before checkout. Pro Power Save's bundle pricing varies by the landing page you land on.

Keep reading on the official StopWatt site

Ready to order? Buy StopWatt direct or compare StopWatt bundle pricing.

Order direct from the official store

Ready to try StopWatt risk-free?

Pick the bundle that matches your home size, then complete your order securely on this page — no redirects, no account required.

Sizing rule of thumb: one device per 800–1,200 sq ft, so most homes over 1,500 sq ft use the 3-device bundle.

Checkout — 3 Devices

$105.84

Visa acceptedMastercard acceptedAmerican Express acceptedDiscover acceptedApple Pay acceptedGoogle Pay accepted Encrypted
  • Charged onceOne-time payment, no subscription
  • Dispatch1–2 business days, tracked
  • 60 daysReturn for a refund, no questions
  • Real supportsupport@getstopwatt.net

Prices in USD. The bundle price shown is the full discount — there is no code to hunt for. Add-ons available only here: add 1 extra stopwatt and 3-year replacement protection.