World’s Most Used Radon Test Kit

Q: How do I set up the Air Chek Radon Test Kit?

Placement : Place the kit in the lowest regularly used area of the home (e.g., basement, living room) at least 20 inches above the floor, ideally in the breathing zone (2–6 feet). Hang it centrally in the room using a string, at least 3 feet from doors, windows, exterior walls, or vents, and avoid drafts, high humidity areas (e.g., bathrooms, kitchens), or heat sources (e.g., fireplaces). Use one kit per 2,000 square feet. Conditions : Maintain closed-house conditions (windows and exterior doors closed except for normal entry/exit) starting 12 hours before and throughout the test. Operate heating/cooling systems normally but avoid using whole-house or window fans. Timing : Expose the kit for 3–7 days (72–168 hours). Start on a Thursday and mail it back on Monday for a 4-day test to ensure timely lab processing.

Best price around for Chicagoland

A do-it-yourself radon test is renowned for accuracy and ease of use. Utilized over four million times in homes worldwide and by the American Lung Association. It’s one of the most cost-effective methods for checking radon levels, and it only takes a few days.

Order A Test KIT

*Only Available in Northeast Illinois

Radon Air Test Kit with Instructions and Testing Bag

Industry-leading
diy short-term radon test

No Surprise Lab Fees

Other kits might tack on up to $40 in extra lab fees—but not ours. Everything’s included in one low price.

Radon Testing Under $20

You won’t find a better deal. Reliable, accurate testing without breaking the bank.

Free Shipping to Your Door

We’ll ship the kit right to your home—fast and free.

Made Just for the Chicago area

This offer is only for folks in the Chicago area. If you’re in the city or surrounding ‘burbs, this is for you.

Quick Testing & Fast Results

The in-home test takes just a few days—and once the lab gets your kit, your results are ready in about a day.

Get Results Your Way

We’ll send your test results via mail, email, or even text—whatever works best for you.

The Process

You Receive your test in 2-3 Days

Place your kit for 4+ days

Fill out your card

Mail to lab in provided mailer

Get your results 1 day after it arrives

Il Department of Public Health & US EPA says:

Illinois Homes should be tested every two years

FAQs about Radon Testing

Radon is a naturally occurring, odorless, colorless radioactive gas produced from the decay of uranium in soil, rock, and water. It can accumulate in buildings, posing a health risk as the leading cause of lung cancer among non-smokers in the U.S. In the Chicagoland area, unique geology leads to higher-than-average radon levels, often exceeding the EPA’s action level of 4 pCi/L, making testing and mitigation critical.

Prolonged exposure to elevated radon levels (above 4 pCi/L) increases the risk of lung cancer, causing over 21,000 lung cancer deaths annually in the U.S. The risk is higher for smokers. Testing and mitigation can significantly reduce this risk.

While not universally mandated, Illinois requires radon testing disclosures in real estate transactions, and since 2013, new constructions in the state must include radon mitigation systems. Testing is highly recommended due to Chicago’s elevated radon levels, with some areas showing significant block-to-block variations.

Radon testing typically involves placing a continuous radon monitor in the lowest livable area of a home, such as a basement, for at least 48 hours under closed-building conditions. Results are analyzed and reported within a day or two, indicating whether levels exceed safe thresholds.

The Air Chek Radon Test Kit is a short-term, 3-to-7-day radon testing device that uses granular activated charcoal to absorb radon gas from the air. It’s designed for homeowners and professionals to measure indoor radon levels easily and accurately. The kit includes the test device, instructions, prepaid return mailer, lab analysis, and a test report. It’s widely used, with over 7.8 million kits sold globally.

Placement: Place the kit in the lowest regularly used area of the home (e.g., basement, living room) at least 20 inches above the floor, ideally in the breathing zone (2–6 feet). Hang it centrally in the room using a string, at least 3 feet from doors, windows, exterior walls, or vents, and avoid drafts, high humidity areas (e.g., bathrooms, kitchens), or heat sources (e.g., fireplaces). Use one kit per 2,000 square feet.

Conditions: Maintain closed-house conditions (windows and exterior doors closed except for normal entry/exit) starting 12 hours before and throughout the test. Operate heating/cooling systems normally but avoid using whole-house or window fans.

Timing: Expose the kit for 3–7 days (72–168 hours). Start on a Thursday and mail it back on Monday for a 4-day test to ensure timely lab processing.

After exposing the kit for 3–7 days, mail it to Air Chek (1936 Butler Bridge Road, Mills River, NC 28759) using FedEx or UPS for faster delivery. Results are typically available by email by 5:30 PM Eastern Time on the day the lab receives the kit (Monday–Friday; Saturday tests are reported the next business day by noon). You can also access results online at cgi.radon.com using the test kit serial number (available for 60 days post-analysis).

No, the kit is designed for easy homeowner use with clear instructions.

About Radioactive Radon

Chest X-ray Showing Lungs for Radon Impact

How Hazardous is Radon?

Radon is the #2 cause of lung cancer—right after smoking.
Over 1,100 people die from radon-related lung cancer every year in Illinois.
All radon is radioactive—there’s no “safe” version of it.
It damages the DNA in your lungs, and if your body makes a mistake while repairing it, it can lead to lung cancer.
The longer you’re exposed, the higher the risk—it’s a slow, silent threat.

Aerial View of Residential Area for Radon Testing Locations

How Common is Radon?

About 1 in 3 homes in the Chicago area test high for radon.
Radon is deadlier in Illinois than carbon monoxide, house fires, asbestos, and lead in water—COMBINED.
Any home can have radon—doesn’t matter how old it is, how it’s built, or where it’s located.

Diagram of Radon Gas Rising into a House

How Does Radon enter my home?

It can enter homes by moving directly through concrete basement or crawlspace floors.
Common entry points include floor cracks, gaps, and sump pump systems.
Homes built on slabs (no basement or crawlspace) may have a higher risk of radon exposure.

Technician Installing Radon Mitigation System

What if my radon level is high?

How it works: A radon system gently pulls radon gas from beneath your home’s foundation (usually through the gravel under your basement or slab) and vents it safely above your roof.
Always on, always dependable: These systems run 24/7 to keep your home safe—and they’re built to last.
What it costs: In the Chicago area, professional installation typically costs between $1,300 and $2,500, though prices can range from $1,100 up to $7,000 depending on your home’s layout.

Short-Term Radon Air Test Kit with Instructions

RADON TEST KIT

~~$35.00~~

$19.00

FREE Shipping & No Lab Fees!

An industry-leading test available at a special price for ONLY Chicagoland residents.

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