A 3 month radon test kit is ideal for use in most average-sized homes. Simply place one detector in a living room and one in a bedroom to ensure that the locations with highest occupancy are tested.

Radon levels are averaged over the number of hours exposed. A seasonal correction factor (calculated by the UK Health Security Agency) will be applied to the ‘raw’ results taken over a 3 month period from your property to calculate an estimated annual average concentration. Therefore, 3-month kits gives the most accurate results. This test kit can be used for residential and commercial properties.

If your property is very large, has been extended or has a basement, you may require additional detectors so that further areas can be tested.

Kit contains:

2 x passive radon detectors, to be left in place for 12 weeks

1 x tracking form

1 x instructions for use

Price includes laboratory testing & results report




Our radon detectors are analysed at an independent, third-party laboratory that is validated by a UK based laboratory to ensure a speedy test result. Results reports are emailed within 10 working days of receipt of detectors, but can often be available sooner than this.

If you are looking to purchase or sell a property and are in need of quick radon test results, then check out 10 day radon test kit page.

Detectors have a limited shelf life and should not be stored for long periods before being used; this may invalidate the test and prevent us from issuing a results report. Please begin the test as soon as possible after receiving your order.

For 3 month detectors, if you do not intend immediately starting the test, store the unopened bags in a freezer. Detectors have a 6-month lifespan and testing must be completed within this timeframe.