Resources

Radon guides

Short guides for each step: getting ready for a test, reading your result, picking a test, and getting a system put in.

Which guide do you need?

Haven't tested yet? Cook County homes can get a free kit, and Will County kits are $8. Our testing guide shows how to get one. The five guides below are in the order most people need them. Skip ahead if you already have a result or an install date.

  1. What to expect during a radon test. Read this before you set out a test kit.
  2. What your radon test result means. Read this when your result comes in.
  3. Short-term or long-term radon test: which one do you need? Read this when you’re picking how long to test, or when you’re buying or selling.
  4. Getting a radon system put in: what Illinois homeowners should know. Read this when your number is high and you want to know what a fix involves.
  5. How long does radon mitigation take, and what happens on install day? Read this when you need dates. New systems are usually scheduled within a week or two, and that wait is separate from the time we spend at your home.

Buying or selling a home? The state radon office, IEMA-OHS, puts out the seller pamphlet and the radon hazards disclosure form.

Already have a high number? Call Bill at (815) 370-9682 or send your info for a quote. That number is Bill's cell phone. Calls Mon-Sun, 7 a.m.-7 p.m. Texts, photos, and forms can be sent anytime. Our price ranges are on the cost page. The services page covers a new system, passive activation, and fan replacement. New to radon? Start with what is radon. Everything else is in the radon knowledge base.

All radon guides

Testing Guide4 min read

What to expect during a radon test

Where the test goes, how to keep your home closed up, and what to do while it runs.

April 14, 2026Read guide →
Test Results5 min read

What your radon test result means

What pCi/L means, where the EPA draws the line, and what to do if your number is high.

April 11, 2026Read guide →
Testing Guide4 min read

Short-term or long-term radon test: which one do you need?

How long each test runs, what each one tells you, and the extra rules when a home is being sold.

April 8, 2026Read guide →
Mitigation Guide4 min read

Getting a radon system put in: what Illinois homeowners should know

How a radon system works, what the install involves, what Illinois requires, and what to do once it is running.

April 17, 2026Read guide →
Mitigation Guide4 min read

How long does radon mitigation take, and what happens on install day?

Most installs are done in one visit. Here is the timeline from your first call to a running system, and what the crew does that day.

April 17, 2026Read guide →

Towns we serve

These are the towns our crew works in. Each one has its own page.

Helpful official radon resources

Last reviewed by American Radon Systems: October 10, 2026

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