Radon Testing



Steve is certified by the National Radon Safety Board (NRSB) as a Radon Measurement Specialist.  Steve uses Professional Continuous Radon Monitors made by Sun Nuclear Corporation. 

Radon testing using continuous monitors requires a minimum of 52 hours.  It also requires the cooperation of the homeowner to keep doors and windows closed.  Steve will brief the real estate agent,  and homeowner if available,   on the conditions that need to be maintained during the test.  He will also leave simple instructions on a placard placed under the monitoring equipment.  A copy of this placard is included below


The Environmental Protection Agency recommends mitigation of radon gas if testing indicates levels above 4 pCi/L  (picocuries per litre) 

Is a radon test necessary?  Nearly one out of every 15 homes in the United States is estimated to have an elevated radon level (4pCi/L or more). To read more about what the EPA says about radon click here (link to http://www.epa.gov/radon/healthrisks.html


For additional information on Radon gas and what to do if levels are above 4 visit the NRSB website by clicking here  (link to http://www.nrsb.org/consumers.asp


Proper conditions must be maintained for an accurate test.  The following placard is left to remind homeowners of these conditions: 


National Radon Safety Board Certified

Radon Measurement Specialist

Steven W. Vorrasi

Certification Nr: 11SS032


(except for entry and exit)



Open doors and windows will invalidate this test, thus delaying the process.  If closed-house conditions are not maintained, you may be subject to a fee.

The following conditions must be maintained:

1.  Do not touch, cover, move or alter the performance of the radon detector(s) or non-interference controls.

2.  Do not operate any whole house fan.  Do not use fireplace(s) or wood stove(s) unless they are the primary heat source.

3.  Operate heating and air-conditioning normally.  Turn off and keep any equipment which supplies fresh air to the dwelling unless it is vented supply air to a combustion appliance. 

Note:  Exhaust fans such as the dryer, range hood, or bathroom fans can be operated normally.  Any exhaust fan or any combustion appliance such as an attic ventilating fan may decrease the pressure in the dwelling, which can affect the radon concentration.  Windows must be kept closed because they can decrease pressure in the lower portions of the dwelling due to the warm air escaping, which can alter the radon levels.

Vorrasi Home Inspections, LLC


540 347 6558