Find out more about STETZERiZER products and how they can improve your electrical environment

You’ve got questions? We’ve got answers! Browse this page for anwers to the most common questions we get asked about STETZERiZER products. If you can’t find the information you are looking for you can always contact us by phone or email by going to our Contact page.

Can I use the Microsurge meter outside the United States?

Yes. The STETZERiZER Microsurge meter is designed to operate on 110V-240V, 50-60 Hz AC power. Unlike STETZERiZER filters, where different models have been designed for use in specific countries or regions, the Microsurge meter can be used universally with the … Continue reading

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Is there a grounded version of the Stetzerizer filter?

No, we do not make a grounded (3-prong) version of the North American STETZERiZER filter. Why not? To put it simply, there is no need. STETZERiZER filters act as a short to high frequencies, and since current oscillates on the … Continue reading

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My outlets are grounded/ungrounded – will Stetzerizer filters work for me?

The North American model of STETZERiZER filters are equipped with an ungrounded plug (Type A, 2 prong). They can be used in both grounded and ungrounded outlets operating at 110V, 50/60Hz without issue.

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Can I use U.S. model filters in other countries and vice versa?

Short answer – no. STETZERiZER filters designed for use in North America (United States, Canada, the Caribbean) can only be used in countries with the same type of electrical distribution system – 110V, 50/60Hz AC. Much of the rest of … Continue reading

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What are STETZERiZER Filters for?

STETZERiZER Filters remove or reduce high-frequency pollutants on the electrical wiring in your home or business.

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How can I tell if I need STETZERiZER Filters?

If you and your neighbors have electronic equipment connected to electrical outlets, you need STETZERiZER Filters.  The STETZERiZER Microsurge Meter can be used as an aid in determining exactly how many filters you may need.

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How many STETZERiZER Filters do I need?

It usually takes 20 filters to effectively “clean up” the average home.  Homes with more electronic equipment (i.e. computers, printers, fax machines, televisions) may require more filters.   If this describes your home you may need to use several power … Continue reading

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What is the lifespan of STETZERiZER Filters?

STETZERiZER Filters are not like oil filters that fill up and become less efficient with use; they are an electronic component and should last a lifetime.

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Do I need to hire an electrician to install STETZERiZER Filters?

No.  STETZERiZER Filters are designed so that anyone can properly install them.  Simply plug the filters into an electrical outlet or power strip.

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How do I install STETZERiZER Filters in my home?

Installing STETZERiZER Filters is as easy as plugging in a toaster – simply plug your STETZERiZER filters into any standard electrical outlet, and that’s it! You do need to plug them in in the right places though, and we provide … Continue reading

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How can I tell if a STETZERiZER Filter is working?

The only way to tell if a STETZERiZER Filter is working is with the use of an oscilloscope or specially designed meter like the STETZERiZER Microsurge meter.  However, many of our customers claim they can tell their filters are working … Continue reading

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I plugged in a STETZERiZER Filter and it started humming. Should it do this?

No.  When a STETZERiZER Filter is humming, it is overloaded.  To resolve this problem, simply plug in more filters.  Remember, it takes an average of 20 filters to clean up a home; one or two filters simply cannot do the … Continue reading

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I plugged in a STETZERiZER Filter and there was a spark. Is this normal?

Yes, it is normal for the filters to spark or make a “popping” sound when they are being plugged in.  This should not hurt you, your electronic equipment, or your filters.

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What are GS Units?

GS (Graham-Stetzer) Units are a measure of the average magnitude of the voltage surge (i.e. the rate of change of the voltage with time, or dV/dt) at the electrical socket.  One GS Unit is 24 Volts per second.

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Why are international models of STETZERiZER products more expensive than their North American counterparts?

There are several reasons why international STETZERiZER products may be more costly than our North American line. The following items, as well as others, must be factored into international retail prices: shipping – which can be more than $1 USD … Continue reading

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