Testing tells you the radon level in the home. Mitigation is the work done to reduce that level when it is elevated.
Testing vs. mitigation
| Question | Testing | Mitigation |
|---|---|---|
| Purpose | Measures radon level | Reduces radon entering the home |
| Typical trigger | You do not know the level yet | Result is elevated or buyer requests repair |
| Output | Report or test result | Installed system and follow-up testing guidance |
| Provider role | Places, retrieves, or analyzes test | Reviews layout and installs reduction system |
Start with testing if you have never tested
Radon cannot be seen, smelled, or tasted, so a test is the only way to know whether your home has elevated levels. A short-term test may be useful for a quick check or real estate transaction. A long-term test can provide a better picture over time.
Move toward mitigation if the result is elevated
If you already have a result at or above 4.0 pCi/L, you may need mitigation. EPA recommends fixing homes at 4.0 pCi/L or higher. In Pennsylvania, mitigation work requires radon certification, so homeowners should verify provider status before hiring.
The right next step depends on your situation
- Never tested before: order a test or contact a testing provider.
- Test result under 2.0 pCi/L: continue routine testing over time.
- Test result between 2.0 and 4.0 pCi/L: consider your risk tolerance and whether to reduce levels further.
- Test result at or above 4.0 pCi/L: request mitigation guidance.
- Existing system with high levels: request system inspection or repair guidance.
Next step
Not sure which service you need?
Share whether you already have a result. That usually determines whether testing or mitigation is the next step.
Common questions
Is a test kit the same as mitigation?
No. A test identifies the level. It does not reduce radon.
Can I request mitigation without a test?
A provider will usually want to know the result and testing context before recommending a system.
Who certifies radon providers in Pennsylvania?
PA DEP maintains radon certification information and a services directory for testing, mitigation, and laboratory services.