Every guide, no funnel.

This library is organised around the four questions that decide a radon project: what the house actually measures, which system fits the foundation, what it costs installed, and what it costs to keep running. Read them in that order when you are starting from scratch, or jump to the one that is blocking you.

What each hub answers

Three ways to use it

Starting from scratch. Test first, then read the systems hub, then the cost hub. Buying a system before testing is how people end up mitigating a house that reads 1.4 pCi/L.

You already have a number. At or above 4 pCi/L, go to the systems hub and then the cost hub. Between 2 and 4 pCi/L, read the testing guide before you spend anything else; a long-term test may change the decision.

Buying or selling a house. Start with the testing guide for what a certified measurement includes, then the zones guide for what the county label does and does not tell you.

Not sure where to start? Begin with the constraint that cannot change: the foundation decides the system, and the test decides whether you need one. Everything else is price.

How the library is maintained

Every guide lists its sources and an update date. We correct errors and add guides as equipment lines and certification listings change. If a page looks out of date, email contact@radonlab.com with the URL and the correction.

Guide library questions

How often are the guides updated?

Cost and systems guides are rechecked when equipment prices or certification listings change; the library is reviewed on a rolling twelve-month cycle.

Do you accept paid rankings?

No. A brand cannot buy a place in a comparison, a score, or a best-of list. Affiliate links are disclosed on every page.

How do I report an error?

Email contact@radonlab.com with the URL and a source. Corrections with a source are handled first.