RADON TEST REQUIREMENTS
Radon Test Requirements: CLOSED BUILDING CONDITIONS
Radon Test Process Requirements
WINDOWS & DOORS :
- All windows in the home, on all levels, must be kept closed. Its a main Radon Test requirement !
- Kept All exterior doors closed except for normal entry and exit (60 second or less).
Radon Test Process Requirements TEMPERATURE :
- If the home is occupied, then use the HVAC system to keep the home at a comfortable temperature for the residents. The fan status must be in the AUTO mode.
- If the home is vacant, or if the residents are out of town, keep HVAC system to a temperature between 67-77 F with the fan in the AUTO mode.
- If present and manually controlled, the whole house fan should be off.
- Clothes dryers, range hoods, and bathroom exhaust fans can be used in moderation.
- Do not use Ceiling fans, portable dehumidifiers, and air cleaners within 20 feet of a monitor.
- If the home has a radon mitigation system, it must be functioning.
- The test provider can seal accessible windows and exterior doors on the lowest level of the home with anti-tampering tape that must remain intact for a valid test.
.
In addition, closed-building conditions for 12 hours prior to the initiation of the measurement are a required condition for measurements lasting less than four days. There are recommended prior to measurements lasting up to a week in duration. Normal operation of permanently installed energy recovery ventilators (also known as heat recovery ventilators or air-to-air heat exchangers) may also continue during closed-building conditions. In houses will functioning permanent radon mitigation systems , these systems should be ON during the measurement period.
Closed-building conditions will generally exist as normal living conditions in northern areas of the country . Thus, the homeowner can keep the windows closed when the average daily temperature is low enough. Depending on the geographical area, this can be the period from late fall to early spring. Also, in some houses the most stable radon levels occur during late fall and early spring. The house occupants keep windows closed and not using the house heating system. Such conditions are not causing any ventilation and circulation). Available information about variations of indoor radon levels in a particular area can be used to choose a measurement time when the radon concentrations are most stable.
QUESTIONS?
Should you have any additional questions regarding radon testing procedures please don’t hesitate to email | book appointment online | call us at 240-224-0577
Radon Test Authorization and Non-Interference Agreement
The continuous radon monitor being deployed to conduct the indoor radon assessment at the residence identified below has been approved by National Radon Proficiency Program. The operator will conduct a radon test for a minimum of 48 hours according to the ANSI-AARST Protocol for Conducting Radon Measurements in Homes (MAH-2019). These protocols were developed specifically to deal with the time-sensitive nature of real-estate transactions.
The following requirement must be maintained in order to achieve a valid test:
- All exterior windows on all levels of the building must be kept closed. All exterior doors must be kept closed except for momentary entry and exit.
- These “closed building conditions” must have been maintained for 12-hours prior to the start of the test as well as throughout duration of the test.
- The thermostat must be set to normal occupied operating conditions with the temperature set between 65° and 80° F.
- The radon test device must not be moved, covered, or tampered with.
- High volume, whole-house, and window fans must not be operated. Fireplaces or wood stoves shall not be operated unless they are the primary heat source.
- Excessive use of clothes dryers, range hoods and bath fans should be avoided
