Radon Test Kits in Larimer County, CO

The verified Larimer County purchase is the City of Fort Collins Senior Center, 1200 Raintree Drive: $6 for a short-term kit and $20 for a long-term kit. The city says people outside city limits should order from CDPHE. A January county note about free pickups could not be reopened on October 1, 2026, so it is not listed as current.

Last verified October 1, 2026. Confirm the official page before you travel. Prices and stock change.

Local Radon Test Kit Options

Available when checkedLow-cost test kit

Fort Collins discounted radon kits

Fort Collins sells a $6 short-term radon kit and a $20 long-term kit at the Senior Center on Raintree Drive.

Who it is for. The city sells these kits at the Senior Center. If you live outside Fort Collins city limits, the same page tells you to order a kit from CDPHE.

Short-term kits are $6. Long-term kits are $20. Both prices are on the city radon page.

Buy the kit at the Fort Collins Senior Center, 1200 Raintree Drive. The page does not list Senior Center hours. Short-term kits need closed-house conditions and should be mailed as soon as you seal them.

Fort Collins Senior Center

1200 Raintree Drive
Fort Collins, CO 80526

The city says the EPA recommends fixing levels of 4 pCi/L or higher, and that about half of Fort Collins homes tested are at that level. A separate January 2026 Larimer County spotlight described free short-term pickups. That county page was not available when we checked on October 1, 2026, so those free pickups are not listed.

Last verified October 1, 2026Radon | City of Fort Collins See something outdated? Report a change.

Available when checkedMail or online kit

Colorado free radon test kit

CDPHE offers a free radon test kit order, one per household per year, and a link to discounted kits.

Who it is for. One free kit per household per year.

Free

Free, one per household per year. CDPHE also links a separate discounted kit order and says store kits often cost about $10 to $50.

Order from the free-kit link on the CDPHE testing page.

Order link published by the agency

CDPHE says radon is found at elevated levels in one out of every two Colorado homes. The department says it does not test your home for you. The discounted kit link on that page goes to https://sosradon.org/test-kits. We did not republish a discounted price because the CDPHE page did not list one.

Last verified October 1, 2026Testing and mitigating your home for radon | CDPHE See something outdated? Report a change.

Prefer a reusable electronic radon monitor?

A short-term test kit is a good low-cost way to screen a home. If you want to see how radon changes over days, weeks, and seasons, or you want a monitor you can reuse in another home, an electronic radon monitor may be a better fit.

Bill's current pick from the Minneapolis guide: Airthings View Radon. It is the simpler radon display. View Plus is the one to compare if you also want a wider indoor air picture.

See current Airthings price Compare radon monitors

If you purchase through our Airthings link, we receive a small percentage of the sale at no additional cost to you. Our affiliate link may provide a discount on eligible products. This helps support the local radon-testing directory.

The product link does not apply a discount by itself. Bill's Minneapolis guide says to add the monitor to your cart, enter your name and shipping, then type ARS10 at checkout. That guide says the code is 10% off eligible Airthings products, it does not apply to items that are already discounted, and it does not stack with other offers. Code: ARS10.

EPA radon zone

EPA classifies Larimer County as Zone 1, its highest radon-potential category. Individual homes can vary, so testing is still the only way to know your home's level. The zone is not a claim that your house is high.

Local radon notes

EPA classifies Larimer County as Zone 1, its highest radon-potential category. Individual homes can vary, so testing is still the only way to know your home's level.

Source: EPA Map of Radon Zones (county file https://www.epa.gov/system/files/other-files/2024-06/radon-zones-202406.json). Checked October 1, 2026.

How to test, and what a result means

Place the kit the way its instructions say, and keep the house closed when the kit requires that. A short test is a screen. It is not the last word if your state wants a follow-up test.

How to test for radon
Understanding radon results
What 4 pCi/L means

Cities that share this program

These are places with a verified program or a verified way to get one. They are not a ranking.

Fort Collins

Sources

Radon | City of Fort Collins. Verified October 1, 2026.
Testing and mitigating your home for radon | CDPHE. Verified October 1, 2026.
EPA Map of Radon Zones (county file https://www.epa.gov/system/files/other-files/2024-06/radon-zones-202406.json)

How we check programs

A reusable monitor does not have to stay in one house. After you have a reading you trust for your own home, you can lend it to a parent, an adult child, a coworker, a neighbor, or a friend.

Here is an example, not a sale price. If a roughly $100 monitor is eventually used by five households, the equipment cost works out to about $20 per household. Your real price will be whatever the maker charges that day.

Lending a monitor this way does not meet a professional test or a real estate requirement. When you move the device, follow the manufacturer's instructions and start a new measurement.