The presence of Radon may be had to tell, but it can be in a house you wish to buy or sell. There are adverse effects it is capable of. Home inspectors are needed to conduct certain tests to determine what radon levels are present in the house, and what measures need to be taken to reduce those levels. These inspectors are therefore important whenever a property goes up for sale.
They need to do their tests at the lowest levels of the house, such as the basement. You should also know about how long and when the test should be done. The shortest length should be two days. The test also needs non-interference.
They need to have certain equipment for such work. Home inspectors have said equipment, as they are qualified to use them. You can tell what the latest equipment is from the relevant health and safety authorities in your area.
They are either active or passive testing kits out there. The passive ones do not need electricity to work. They only need to be exposed to the air in the house for a given period, as per their settings. They shall thereafter be taken to labs for analysis. Passive devices serve the purpose of both short and long-term testing. They are not that expensive. They are also great at minimizing the negative impact of interferences to the test.
Active testing kits need electricity to work. They have radon monitors that are always recording, both the levels and amount. They shall thus keep recording and measuring the radon amounts and the decay products in the air. They are capable of detection of irregular spikes of the radon levels. The report can then be interpreted by the inspectors. They are capable of identifying and eliminating test interference effects. Their reliability makes them the favorites.
The best way to reduce interference to the results is to use test devices that keep on recording the radon and decay levels, so as to note when spikes turn up. Motion detectors shall tell when there was some interference. It also tells if there have been changes in the test conditions. The proximity detectors are used to show when people walked into the test area. Such intrusions can affect the results.
When you can tell more about the weather conditions, you will know how effective the test results shall be. By knowing the temperature readings, you will know if there was an intrusion. It is best if the windows and doors remain sealed.
As an act of good faith, there should be a non-interference agreement signed before inspectors start working. These points make up what needs to happen for an effective inspection to begin.