Radon Testing.
Colorado has some of the highest radon levels in the country. It's odorless, colorless, and the second leading cause of lung cancer. Testing is the only way to know — and we make it simple.
Invisible. Odorless.
Underfoot.
Radon is a naturally occurring radioactive gas that comes from the breakdown of uranium in soil, rock, and water. In Colorado's geology, it's everywhere — and it seeps up through foundations into homes, where it gets trapped and concentrates.
You can't see it, smell it, or taste it. The only way to know your home's radon level is to test. The good news: testing is fast and inexpensive, and if elevated levels are found, mitigation systems are highly effective and reasonably priced.
It comes in from below.
Three steps. 48 hours.
Place the monitor
We deploy an EPA-certified continuous radon monitor in the lowest livable area of the home, following EPA protocols for placement and closed-house conditions.
Wait 48 hours
The monitor records hourly readings around the clock. During that time, the home should remain under "closed house" conditions for accuracy. We handle the timing.
Get your results
We retrieve the monitor and produce a detailed report with hourly readings, average, and recommendations. If levels are elevated, we'll explain mitigation options.
A few simple conditions.
An accurate radon test depends on "closed-building conditions." Review these guidelines before your test so the results hold up — and let us know if anything won't work for your home.
Keep the home closed up
Keep all windows closed and exterior doors shut except for normal entry and exit — starting 12 hours before the monitor is placed and through the full 48-hour test. Open windows are the most common cause of an invalid test.
Run HVAC normally — with two exceptions
Your central heating and air conditioning can run as usual. Do not run evaporative ("swamp") coolers or whole-house fans during the closed-house period, as they pull in outside air.
Go easy on fans in the test room
In the room where the monitor sits, please avoid running ceiling fans, portable fans, or window AC units. Elsewhere in the home is fine.
Don't disturb the monitor
Leave the device exactly where we place it. It records continuously and may look powered off or asleep, but it's still collecting data — please don't move, cover, or unplug it.
Occupied home? Tell us if conditions are tough
If someone is living in the home and these conditions aren't comfortable to maintain, let us and the buyer's agent know in advance. We'd rather reschedule than make an unnecessary trip — no problem at all.
When we place the device
We usually set the monitor at the time of your home inspection. If an earlier drop-off makes sense for timing, our office will reach out to arrange access.
Why it matters: If closed-house conditions aren't maintained, the test has to be restarted — 12 hours of closed conditions followed by another 48-hour test. That can delay your results past an inspection objection deadline, so it's worth getting right the first time.
Real data. Plain English.
Radon results don't have to be cryptic. We give you the readings, what they mean, and what to do next — in language anyone can understand.
Hourly readings, charted
See the radon level at every hour of the test period — not just an average. Patterns over time tell a more complete story.
Clear pass/action recommendation
If your average is below 4.0 pCi/L, you're below the EPA action level. If it's above, we'll explain exactly what that means and what to do.
Mitigation guidance, no upselling
We don't sell mitigation systems, so our advice is unbiased. We'll point you to qualified, licensed mitigators in your area.
Reusable for your records
The report is yours to share with buyers, sellers, agents, or future inspectors. Keep it for your home's history.
Radon, explained.
How dangerous is radon, really?+
The EPA estimates radon causes about 21,000 lung cancer deaths per year in the U.S. — second only to smoking. Long-term exposure to elevated levels is the concern; brief exposure isn't an emergency. The good news is that it's highly testable and treatable.
What's the EPA action level?+
4.0 picocuries per liter (pCi/L). At or above that, the EPA recommends mitigation. Between 2.0 and 4.0 pCi/L, mitigation is encouraged but optional. Below 2.0 is considered low. Colorado's average is around 6.0 pCi/L — well above the action level.
Can I add radon testing to a full inspection?+
Absolutely — and most buyers do. We deploy the monitor at the start of the full home inspection and pick it up 48 hours later. It saves a trip and you get all the data together.
What if my home tests high?+
Don't panic. Radon mitigation systems are well-established, reliable, and typically cost $1,500–$2,500 to install. Most reduce levels to well below the action threshold within days. We'll point you to qualified, licensed mitigators — and re-test after installation if you'd like.
Should I test even if I'm not buying or selling?+
Yes — the EPA recommends every home be tested every two years, even if previously tested low. Radon levels can change over time as soil settles, foundations crack, or HVAC patterns shift. It's cheap insurance for your family's health.
Do you also test for mold?+
Yes — see our mold assessment service. Radon and mold are different concerns, but both are common in Colorado homes and both are worth checking.
Two days. One healthier home.
Schedule a radon test on its own or as an add-on to your full inspection.