Clarity for your home.Choose for the result you need
A suitable mail-in kit can be the sensible first purchase for a defined test. A continuous monitor fits repeated observation and access to readings over time. For a home sale, confirm the required procedure and report with your provider.
What each method provides
A mail-in kit collects a sample for laboratory analysis. A continuous monitor records and displays readings, with history access that depends on the model. Choose the procedure and test period for your purpose.
The EPA distinguishes short-term testing from tests lasting more than 90 days. Check the actual measurement dates alongside the displayed average. See measurement duration.
Compare the complete purchase
| Buying question | Mail-in radon test kit | Continuous monitor |
|---|---|---|
| What result do I receive? | A lab result for the sampling period | Displayed values and a model-dependent record |
| What do I check first? | Sampling instructions, laboratory and return deadline | Display averages, power, storage and reset behavior |
| What can add cost? | Lab analysis, postage or a further test | Batteries, power equipment or connection hardware |
| Can I revisit earlier readings? | Keep the lab report | Check stored history, export and synchronization |
| Can I read it while away? | Follow the lab's result-delivery process | Requires a complete remote-access arrangement |
Use this checklist to compare the actual package and service.
How to choose a radon test kit
Before comparing offers, answer these questions:
- Purpose: initial household test, follow-up, longer measurement or property transaction?
- Procedure: what sampling period and room conditions does the kit require?
- Laboratory: who analyzes the sample, and is the service appropriate for your intended use?
- Complete cost: are analysis and return postage included or separate?
- Return deadline: how soon must the completed sample reach the laboratory?
- Result: how is the report delivered, and what instructions accompany it?
Compare the complete package and laboratory service before ordering.
Check local testing options first
The EPA points to state radon programs, local health departments, National Radon Program Services and other kit sources. Ask your local program about available free or subsidized kits. Check the EPA's kit information.
This can give you a practical starting point for your first test.
When a continuous monitor is useful
Choose a monitor when you want a continuing record and will use its readings repeatedly. Decide whether you need local averages, browsable history or access while away. Then compare Home 2, View Plus and RD200.
If the location is in a basement, check placement and operating conditions first. Saving records before a reset matters when a monitor is moved between rooms.
Testing for a home sale
Confirm the accepted procedure and report with the relevant state program or qualified tester. Use the EPA Home Buyer's and Seller's Guide for that separate question.
Documentation used
- US EPA — A Citizen's Guide to Radon (2025)US public guidance · checked 2026-10-12
- US EPA — Obtaining radon test kitsUS public guidance · checked 2026-10-12
- US EPA — Home Buyer's and Seller's Guide to Radon (March 2024)US public guidance; property transactions · checked 2026-10-12