Who we help
Buying, selling, renting out a home, or helping a client? Pick the page that fits you.
Real estate agents
Buyer's agents and listing agents need different things, so each side has its own page.
Buyers and buyer's agents
Get a price during your inspection window, and see if a credit from the seller makes more sense than a repair the seller picks.
Sellers and listing agents
Call early, get a price, and get radon off the repair list before closing.
Buying or selling
What you need when radon comes up in a home sale, like the paperwork, the warranty, and what to do next.
Investors
We work around your dates, and the warranty goes with the home to the next owner.
Landlords
We keep the work neat for your tenants, and we come back when a fan needs work.
What’s your radon number?
The U.S. EPA says to fix a home at 4.0 pCi/L or higher, and to think about fixing it between 2.0 and 4.0 pCi/L. That’s on the EPA action level page. If your result is high, call Bill at (815) 370-9682.
Need a test and not selling? Our testing guidance links to the free Cook County kit, where that program covers you, the $8 Will County kit, and radon detectors you can leave in the home. If you’re buying or selling, use an Illinois-licensed measurement professional. IEMA-OHS has the state papers for radon in a home sale, including the seller pamphlet and the radon hazards disclosure form.
That number is Bill's cell phone. Calls Mon-Sun, 7 a.m.-7 p.m. Texts, photos, and forms can be sent anytime.
Which page matches your situation?
Buying a home
The inspection window is the time to get a price for the home you’re buying. One choice is a credit from the seller. The other is a system put in by a company you pick. The buyer page walks through both. Read the buyer-side guidance.
Selling a home
Call when the buyer's result comes in, or before you list if you already have a number. Bill looks at the home and gives you the price before work starts. You get written paperwork for the file. Read the seller-side guidance.
You’re the agent
Listing agents and buyer's agents need different things from us. The realtor page covers both. Go to the realtor page.
Getting a property ready to sell or rent
The investor page covers more than one address, our price ranges, and the warranty that goes to the next owner. Read the investor page.
Renting the home out
The landlord page covers homes with tenants in them, keeping the work neat, and the written warranty. Read the landlord page.
You live there and aren’t selling
Start with the testing guidance if you still need a number. If the home needs work, the services page covers new systems, fan replacement, adding a fan to a radon pipe, repairs, and moving a system. See our services.
We can usually schedule a new system within a week or two, and most are done in one visit. A fan replacement is usually within a day or two. When you call, have your address, your radon number, a photo of any radon pipe you already have, and your closing date if there is one.
Radon came up in a sale and you’re not sure which page fits? Start with the buying or selling page. It covers both sides.
Helpful official radon resources
Last reviewed by American Radon Systems: October 10, 2026
- EPA explanation of the 4.0 pCi/L action level
EPA recommends fixing a home at 4 pCi/L or more, and considering a fix between 2 pCi/L and 4 pCi/L.
- Illinois IEMA-OHS real estate radon guidance
Official Illinois materials for radon in a real estate transaction, including the seller pamphlet and disclosure form.
- Illinois IEMA-OHS Radon Program
Illinois radon program information for homeowners.
Not sure which page fits?
Call Bill. He'll ask a couple of questions and tell you what to do next.