My home in 6 questions: radon, electrical wiring, air
Six questions to know what to check at home: radon, wiring, heating, damp, ventilation, radio waves, and who to contact.
- Radon
- Indoor air
- Public resources
The six questions
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How does the tool answer?
The radon card depends on the country you choose. For the United States and the United Kingdom, it points to the official map and reference level, read on the EPA and UKHSA pages; for another country, to the WHO reference level and your national authority. A map describes an area, not your home: only a measurement tells you what is in yours.
The other answers do not produce a score. Each one opens, if needed, a card that says what to do, who to contact, and on which official page the reference was read. The “to do” cards come first, then “to check,” then reference points.
Everything runs in your browser: your answers do not leave your device, and nothing is added to the page address.
The radon cards point to the official map of the chosen country when the site has checked it; reference points read on the official pages on October 20, 2026.
My home in 6 questions: your questions
Are your answers sent or stored?
No. Everything happens in your browser: the answers go nowhere, and they disappear when you close the page.
Why doesn’t the tool give a score out of 100?
Because no score could tell the truth about a home. High radon, old wiring, or a poorly maintained heating system do not add up: each has its own steps and its own contact.
Is a radon map enough?
No: it describes the potential of an area. Two neighboring houses can have very different levels depending on the basement, the ground, and the ventilation. Only a measurement over several months settles it.
What about telluric grids?
They are not part of this tool: no instrument has ever recorded them. What geobiologists say about them is told separately, on the concept pages.