Air & Water

Radon testing

Radon tests and monitors for finding out whether this invisible gas is a concern in your home.

Radon cannot be seen or smelled, so testing is how you find out whether it is a concern in your home.  We favor products with clear placement and timing instructions and understandable results.  Short-term readings and long-term averages differ; follow appropriate testing and mitigation guidance for your area.

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Aranet Radon One Home Radon Monitor Aranet Radon One Home Radon Monitor Why we recommend it: An always-on screen shows radon levels without requiring a phone, while 24-hour, seven-day and 30-day averages help you follow changes over time.  Optional Bluetooth access adds a longer view of your readings in the Aranet Home app.  Two replaceable AA batteries make placement easy.  Use it to monitor radon, not remove it, and follow local testing guidance before making decisions from short-term readings. Materials: polycarbonate housing · polyester sensor filter $179.00★ 4.7 · 68 ratings View on Amazon
Airthings Corentium Pro Radon Monitor Airthings Corentium Pro Radon Monitor Why we recommend it: For detailed radon testing, the Corentium Pro records hourly readings alongside temperature, humidity and pressure.  Its four sensing chambers support measurements over time rather than a one-off snapshot.  NRPP lists this model for professional use with annual calibration required.  Proper placement, test duration and current calibration still matter; the monitor measures radon but does not remove it. Materials: silicon sensing elements · electronic circuitry $899.00★ 4.4 · 75 ratings View on Amazon
AccuStar AT-1001 Long-Term Alpha-Track Radon Test Kit AccuStar AT-1001 Long-Term Alpha-Track Radon Test Kit PAPERUSA PRODUCTION Why we recommend it: A long-term test helps assess radon across changing seasons rather than relying on a brief snapshot.  This battery-free detector stays in place for 91–365 days, then goes to the lab; analysis and return postage are included.  Its AT-100 detector appears on NRPP's approved-device list.  Made in the USA with domestic and imported parts.  It measures exposure over the test period—it does not clean the air or provide an immediate reading. Materials: plastic detector housing · alpha-track detector film · filter · paper instructions and return mailer $37.99 View product
AccuStar PicoCan 400 Short-Term Radon Test Kit AccuStar PicoCan 400 Short-Term Radon Test Kit PAPERUSA PRODUCTION Why we recommend it: A useful first check for an invisible indoor-air hazard: this USA-made charcoal canister collects a short-term radon sample for laboratory analysis.  The exact PicoCan 400 model appears on NRPP’s approved-device list, and this kit includes analysis and return postage.  Follow the 48–96-hour test instructions and return it promptly; it measures radon but does not remove it, and follow-up testing may be needed. Materials: activated charcoal · metal canister and screen (alloy not disclosed) · sealing tape · paper instructions and mailer $34.99 View product
RadonAway / AccuStar Liquid Scintillation Radon Test — Single Kit RadonAway / AccuStar Liquid Scintillation Radon Test — Single Kit USA PRODUCTION Why we recommend it: This small charcoal vial offers a short-term check for radon without buying an electronic monitor, and laboratory analysis is included.  Follow the 48–96-hour exposure instructions, check the kit’s expiry date and return it promptly—the lab must receive it within seven days.  Made in the USA with domestic and imported parts.  It measures radon rather than removing it; follow-up testing may be needed. Materials: activated charcoal · capped test vial (material not disclosed) · paperboard box and instructions $19.95 View product
RadonAway Radon-in-Water Laboratory Test — Single Vial RadonAway Radon-in-Water Laboratory Test — Single Vial GLASSUSA PRODUCTION Why we recommend it: For a home on a private well, this checks a radon source that an air test alone cannot identify.  The price includes laboratory analysis and an emailed report, not water treatment.  Its glass vial has a PTFE-lined laboratory cap; the sample is sent away, never used for drinking.  Made in the USA with domestic and imported parts.  Budget for prompt return shipping—the lab must receive the sample within four days. Materials: borosilicate-glass sample vial · PTFE-lined cap (outer resin not specified) $41.70 View product

What we avoid

These are category-level exclusions when materials or treatments are disclosed.  Each product card explains why we recommend it and lists the disclosed materials.

Ozone generators Ionizers sold as filters Fragrance emitters