During the testing period, ensure that windows and exterior doors remain closed as much as possible. The test requires a stable indoor environment. Minimal opening of doors for entry/exit is acceptable, but prolonged ventilation should be avoided.
Step 6 · Maintain Closed House Conditions
During the testing period, ensure that windows and exterior doors remain closed as much as possible. The test requires a stable indoor environment. Minimal opening of doors for entry/exit is acceptable, but prolonged ventilation should be avoided.
