Radon testing device(s) should be placed in the lowest level of the home suitable for occupancy. This means testing in the lowest level (such as a basement), which a buyer could use for living space without renovations. The test should be conducted in a room to be used regularly (like a family room, living room, playroom, den or bedroom); do not test in a kitchen, bathroom, laundry room or hallway. Usually, the buyer decides where to locate the radon test, based on their expected use of the home. A buyer and seller should explicitly discuss and agree on the test location to avoid any misunderstanding. Their decision should be clearly communicated to the person performing the test.
Set fan clearance at 9 feet above the floor if possible (if this is not possible, maintain a minimum clearance of 7 feet. This will help you and your family avoid injuries. Conversly, don’t fit the ceiling fan too snugly to the ceiling; doing so will prevent it from circulating air properly.