Serving montana and wyoming | NRPP Certified Specialist.
Radon testing and mitigation for safer homes.
The ground has radon. We measure it, and we fix it.
Radon is a silent risk to your family's health. We provide professional home testing and high-efficiency mitigation systems to ensure your air is clean and safe.
NRPP certified in measurement and mitigation
Pay at close on real estate transactions
WHY HERE, WHY SO MUCH
Radon comes out of the ground.
READING YOUR RESULT · PCI/L
| EPA ACTION LEVEL - 4.0
0 2 4 10 20+
Under 2.0 · Low. Retest every few years and after any major foundation, HVAC, or basement work.
2.0 - 3.9 · Below EPA threshold but above World Health Organization reference level. Many homeowners choose to mitigate here.
4.0 and above · EPA recommends mitigation. In a real estate transaction, this is normally where a buyer asks for mitigation before closing.
10 and above · Extremely high. Quite common across MT and WY and requires immediate action.
Radon is a radioactive gas produced by uranium decaying in soil and rock. It has no color, no smell, and no taste. It seeps in through foundation cracks, sump pits, slab penetrations, and crawl spaces. It concentrates indoors, worse in winter, when the house is shut tight and warm air rising up through the building pulls soil gas in behind it.
The EPA sets the action threshold at 4.0 pCi/L. There is no level that is formally considered safe. Risk falls as the number falls, which is why the goal of a mitigation system is the lowest reading reasonably achievable, not merely a passing grade.
21,000
lung cancer deaths a year in the United States are attributed to radon, by EPA estimate.
2nd
leading cause of lung cancer deaths in the United States after cigarette smoking, and the leading cause in non-smokers.
Montana requires radon disclosure in residential real estate transfers under MCA 75‑3‑606. Testing is the only way to know the level; no inspection, age, price, or neighborhood can tell you.
SERVICES
Measure it. Fix it. Prove it.
One certified professional handles the assessment, design, installation, and verification, so nothing gets handed off and nothing gets lost between trades.
01.
Radon testing
02.
Radon mitigation
03.
Verification & reporting
We use state-of-the-art continuous radon monitors to provide highly accurate, 48-hour measurements of internal air quality, ensuring local EPA compliance.
Our active depressurization systems are custom-designed for your specific foundation type, silently venting radon gas away before it enters your living spaces.
After installation, we perform a second measurement to verify the system's effectiveness and provide written test results.
NRPP #1135515-RMP
NRPP #114056-RMS
Independent measurement report
START HERE
Where are you right now?
Three very different situations, three different clocks.
NO TEST YET
I want my home tested
Our NRPP-certified specialists use calibrated continuous monitors to provide accurate results you can trust for your family's safety.
RESULT ABOVE 4.0
My test came back high
If your levels are above 4.0 pCi/L, the EPA recommends taking action. We design and install high-efficiency mitigation systems tailored to your home to effectively reduce radon levels to a safe range.
CLOSING DATE SET
I'm buying or selling
Radon testing is a critical step in real estate transactions. We provide fast, certified testing and rapid mitigation solutions to ensure your closing stays on track while meeting all safety requirements.
THE MECHANISM
How radon gets in, and how a radon venting system gets it out.
A mitigation system doesn't filter the air inside your house. It changes the pressure under the slab, so soil gas takes the pipe instead of the cracks. Mitigation systems are evaluated and installed based on each home's specific needs and design.
Active sub‑slab depressurization, the system used in most Montana homes. The fan keeps the soil under the slab at lower pressure than the rooms above it, so soil gas follows the pipe out rather than seeping through the floor. Crawl spaces and multi‑level foundations use the same principle with more than one suction point.
HOW IT WORKS
What actually happens, in order.
PART ONE
Testing
PART TWO
Mitigation
We begin by establishing a baseline. Testing is the only way to know if your home has elevated radon.
If the levels are high, we install a system that pulls radon from the soil before it enters the house.
1
Testing
A continuous monitor is placed in the lowest livable area of your home for 48 hours.
1
Design
We determine the best exit point and suction location based on your home's unique foundation.
2
Analysis
We upload the data to verify the hourly averages and detect tampering.
2
Installation
Our certified technicians install a high-efficiency fan and PVC venting system.
3
Reporting
You receive a full report with the final pCi/L number and a recommendation for action.
3
Verification
A post-mitigation test is performed to guarantee the system is working effectively.
FOR AGENTS, INSPECTORS, BUILDERS & PROPERTY MANAGERS
Radon shouldn’t move your closing date.
An elevated result lands in the middle of a deal with an inspection deadline already running. The job then is speed, documentation and not making the parties fight about money. That is the part we are built for.
Priority Scheduling
Tell us the closing date when you call. Transaction work gets placed ahead of routine testing.
Rapid Mitigation
Installation typically takes one to two business days, keeping your inspection timeline moving forward.
Certified Documentation
Full NRPP-certified reports that meet all lender and inspection contingency requirements.
Expert Witness
We provide technical expertise to help negotiate radon-related inspection items fairly.
Pay at Close
We offer flexible billing that allows mitigation costs to be settled through the title company.
Post-Mitigation Testing
Every system includes verification testing to prove the safe status of the property.
SERVICE AREA
Based in Billings. Working across Montana and northern Wyoming.
Radon levels in our region are among the highest in the country. We provide testing and mitigation services throughout the Yellowstone Valley and surrounding counties, ensuring safe indoor air for families and businesses in both urban and rural communities.
Primary counties
Montana
Northern Wyoming
Travel work
Yellowstone County
Stillwater County
Carbon County
Musselshell County
Big Horn County
Billings
Laurel
Columbus
Red Lodge
Big Timber
Livingston
Hardin
Roundup
Sheridan
Powell
Cody
Lovell
Greybull
Bozeman
Great Falls
Helena
Miles City
Lewistown
Other cities on request
KNOWLEDGE BASE
Frequently Asked Questions
Why is radon such a problem in Montana and Wyoming?
Radon is produced by uranium decaying in soil and bedrock, and much of Montana's geology is uranium‑bearing. Forty‑nine of Montana's fifty‑six counties and twenty‑one of Wyoming's twenty‑three are classified by the EPA as Zone 1, the category where indoor levels are predicted to average above 4.0 pCi/L. Between the two states, not one county is rated Zone 3. Cold winters make it worse: a tightly closed, heated house draws soil gas in and holds it.
Yellowstone County, where Billings sits, is one of the seven counties rated Zone 2 rather than Zone 1. That is not a clean bill of health. A zone is a prediction made from geology across a whole county, not a measurement of your house, and Billings‑area homes test above the action level regularly. The zone tells you the odds. Only a test tells you your number.
My house is on a slab with no basement. Do I still need to test?
Yes. Radon enters anywhere the building contacts soil slab control joints, plumbing and conduit penetrations, crawl space floors. Slab‑on‑grade homes and homes without basements regularly test above the action level. The only way to know your number is to measure it.
Can't I just use a kit from the hardware store?
For a first look at your own house, a kit is better than not testing at all. But for a real estate transaction, a lender, or any decision about spending money on mitigation, you want a certified measurement: a calibrated continuous monitor, documented closed‑house conditions, hourly data, and a report with a certification number on it. Kits give you one averaged number and no way to show the conditions were right.
How long does a test take, and what do I have to do?
Forty‑eight hours for a short‑term test. You keep windows and exterior doors closed except for normal coming and going, and run heating and air conditioning as you normally would. Don't run whole‑house fans or leave windows open, because that dilutes the reading and invalidates the test.
How much maintenance does a system require?
Mitigation systems are very low maintenance. You simply need to check the U-tube manometer occasionally to ensure the fan is running and plan for a follow-up radon test every two years to verify continued effectiveness.
How long does mitigation take, and how disruptive is it?
Most residential systems are installed in a single day. It involves cutting a suction point in the slab, routing sealed pipe to a discharge point above the roofline, and mounting a fan outside the living space in the attic, garage or on an exterior wall. There is noise and dust during the install; afterwards a correctly installed system is close to inaudible inside the house.
Free consultation, no pressure.
You can call or email, but calling is typically fastest, especially if you have a closing date. Tell us the property address, and we'll talk through your needs.
