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We test for Radon Gas - the second leading cause of lung cancer in the US.

Radon gas is created when uranium in the soil decays. The gas then seeps through any access point into a home such as cracks in the foundation or basement floor, drain tile and sump, or uncovered soils in crawl spaces. The gas can collect in basements and other low-lying, closed areas. The US Environmental Protection Agency (EPA) has set 4 pico curies per liter as an action level.   Professional correction to lower the radon level is recommended for homes at or over this level. 

Radon has been found in homes throughout Colorado. Certain areas are more susceptible than others, but no location is immune. The ONLY way to tell for sure is to have a home tested.  SMOKERS see info below.  All Colorado counties are in the EPA Zone 1 category (highest risk potential), however, it is not possible to predict radon levels from one home to the next.   Testing is recommended for all Colorado homes. Please click here to see a 2 minute video on radon and lung cancer.  

If you're buying or selling a home, radon can be a important issue. The EPA recommends every house be tested. If test results already exist, make sure they are recent or that the home has not been significantly renovated since the test was performed. If in doubt, get a new test done.  

Radon testing is NOT required, but a radon tests are often requested by home buyers. We serve Grand County Colorado

Roger Hankey is National Radon Proficiency Program  listed. See for more information.  Not all radon measurement firms follow the NRPP protocols for quality assurance (annual instrument calibration and performance tests), and not all firms have certified measurement professionals to conduct the tests.  

HOME OWNERS:  If you are NOT planning to list your home for sale in the next 3 months, you can conduct a LONG TERM test PRIOR to listing your home for sale.  An ideal long term test is done for 91 days to 12 months, to average out the daily and seasonal variations in indoor radon levels.  These low cost tests are available online from Kansas State University or by phone at 1 (800) SOS-RADON (767-7236)

                                         AARST NRPP 2020-22 logo           

Individuals holding a Residential Measurement Provider for Standard and Analytical Services have demonstrated knowledge of U.S. EPA radon measurement protocols for the placement and retrieval of radon measurement devices. They have demonstrated knowledge of the proper interpretation of results obtained in residences. Further, these individuals possess and analyze radon measurement devices. Depending upon the specific device, this may allow for rapid provision of test results. The testing professional may also be able to characterize trends in radon concentration and determine unusual conditions arising from such influences as weather changes or occupant tampering of a test. To obtain this classification, individuals follow quality assurance and quality control guidelines and device specific protocols, and calibrate each instrument annually.

We use professional grade continuous radon monitors to provide prompt results after the test.  Test results are emailed to you.  Our monitor assures that we can test during closed house conditions and detect changes in indoor temperature and humidity.   Call 970-393-6604 for fee information.  Monitor must be in house at least 48 hours and have closed house conditions during and 12 hrs. prior to testing. Respecting the health of others is a top priority.  We will use appropriate safety measures during the COVID-19 pandemic including hand sanitizing, disinfectant wipes, and face coverings.

        Sun Nuclear Radon monitor used by Hankey & Brown


Sub slab suction radon mitigation system (drawing of typical installation)    

If radon levels are elevated, mitigation options are:

   Sub-slab suction - to remove radon from below the basement floor.
   This is a typical and effective system.

   Air to Air Heat Exchanger to ventilate the house (may not lower radon to below 4.0 piCu/l)

Both options are readily installed, and cost about $1500 - $2000. 
We aren't mitigators, but can refer you to trusted firms.

A secondary benefit of sub-slab suction systems is cost effective basement dehumidification.

If you are a tobacco smoker, your lung cancer risk factor from smoking multiplies with the cancer risk factor from radon.  Therefore, smokers should ALWAYS get radon tests when purchasing a home. For more information, visit the EPA web site on radon at

Radon test request

To order a radon test use the form below. Test takes at least 48 hours and closed house conditions 12 hrs. prior to start of test and during test. We will contact you for payment info. Reports issued only after payment is received. We accept PayPal payments. Thank you

Please use this form or call 970-393-6604