Some links on this site are affiliate links. If you buy through one, I earn a small commission at no extra cost to you. That commission is how the testing and the site get paid for.
Here is exactly how that works, and what it does and doesn’t change.
What I Recommend
I recommend two kinds of products. Every recommendation on this site tells you which kind it is.
Tested by me. I own it. I measured with it, or measured against it, in real homes. The readings in that article came off my own equipment.
Not tested yet. I don’t own it. The recommendation rests on published specs and other reviewers’ results, and the entry says so plainly. When I buy one, I update the entry with real readings.
Most of what I recommend sits in the first group. I’m working to shrink the second.
I buy the equipment myself. Every meter I have tested was bought with my own money, including the ones I bought purely so I could test them for you. If a manufacturer ever provides a sample, that gets disclosed on the review page itself.
When I say a product did or didn’t change a reading, that verdict comes from logged before-and-after measurements taken with my own meters. The method is in Before-and-After EMF Testing. If a product didn’t move a reading, I say so. Those failures get published alongside the successes.
Where the Testing Happens
Readings come from my own home in Philadelphia, and from the homes of friends and family who ask me to measure theirs. That variety is deliberate: different construction, different neighborhoods, different wiring vintages, different sources.
Those homes appear anonymized. I describe them by room and situation, never by address or name.
What Commissions Don’t Buy
They don’t buy a verdict. If I test something and it doesn’t do what it claims, that’s what the page says, whether or not there’s a commission attached. Products I test and reject stay published as rejections, including ones with affiliate programs I could have joined.
Some categories are sold on claims a meter can’t check at all. Where I cover those, the page says plainly what the product claims, what I could and couldn’t measure, and what the recommendation rests on. What I won’t do is imply a health benefit I can’t support.
The protection against bias here isn’t a promise, it’s the method. Verdicts require logged tests. Failed products get published. My full procedure is public on How I Test, so you can check my work or repeat it.
Where the Links Are
Affiliate links live on commercial pages: buyer’s guides, reviews, and comparisons, each carrying a disclosure line at the top before you reach the content.
Informational articles are written to inform, not to sell. If one carries an affiliate link, it’s disclosed the same way.
Programs
I participate in affiliate programs including Amazon Associates, and direct programs run by meter and shielding manufacturers.
As an Amazon Associate, I earn from qualifying purchases.
Questions
If anything here is unclear, or you want to know whether a specific recommendation carries a commission, ask me. The answer is always yes or no, never complicated.