Port Washington Radon Mitigation and Testing

Radon Mitigation Post Washington, WI 

A-1 Radon Services the Wisconsin Radon Mitigation Experts

Affordable Pricing, Lifetime Radon Mitigation System Guarantee, Fast Quality Installation, Free Radon Mitigation Bid

If your home has high radon levels, don’t worry. Our team has installed thousands of radon mitigation systems all over Wisconsin since 1988. A radon mitigation system can be installed quickly and affordably in less than a day. Our radon mitigation systems significantly reduce the radon levels in your home – guaranteed. Our systems will lower the radon levels in your house to below 3.9 and in many cases, our radon removal systems will bring a house down to under      1.9 pCi/L at no extra charge.

Installed by our experienced and certified technicians, a radon removal system creates ventilation in the soil under the foundation. The suction created by a specialty radon fan carries the radon and other soil gasses through a series of pipes and exhausts them into the air outside the house.

A-1 Radon Advantages:

  • Very competitive priced systems using the highest quality certified parts and radon fans
  • Lifetime warranty on system parts and labor, (fan carries the 5-year manufacturer’s warranty)
  • Lowers the radon levels in your home to 3.9 pCi/L or less – guaranteed. Most homes will be below 1.9 pCi/l
  • Reduces the humidity under your foundation, which in turn can reduce both mold and moisture from the basement
  • Reduces other dangerous ground gases (VOC’s) such as methane and formaldehyde in your home

A radon mitigation system installation can generally be scheduled within a week and takes less than a few hours to install. A-1 Radon goes the extra mile for our customers – including installing systems in the most discreet location possible, whether exterior or interior, and doing all clean-up once the job is done.

EPA And World Health Organization Recommendations:

Radon is measured in picoCuries per liter, or “pCi/L”. While the EPA recommends that you take action if the radon level in your home is 4.0 pCi/L or higher, the World Health Organization (WHO) actually recommends that your home not have levels above 2.7 pCi/L. So you’ve had your house tested and the level is above the WHO recommendation. What now?

If your home has been tested and has high levels of radon, call (262) 977-7799 to request a FREE radon removal bid.


Radon Testing Port Washington, WI

Ask about our Free Radon Test Program!

Nearly half of all Wisconsin homes have radon levels that pose significant health risks. Is your home one of them?

Don’t leave your family’s health to chance. The only way to know for sure if your home has dangerous levels of radon gas is to perform radon testing.

Why buy your test kit from A-1 Radon?

The benefit from buying a radon test from A-1, when we get the report back we are going to email it to you along with the EPA’s recommendation and we will call you and explain exactly what they mean and answer any questions that you might have.

Who is the radon testing for?

Radon is a radioactive and cancer-causing gas that occurs naturally in the rocks and soil beneath our very feet. Unfortunately, you can’t see, smell, or taste it, yet it’s harmful to each and every one of us.

As such, radon testing is for anyone responsible for the safe living conditions of themselves, their families, and others. This includes:

  • Homeowners
  • Homebuyers and sellers
  • Landlords
  • Building/property managers
  • Radon mitigation experts

What radon test kit or detector should I use?

  • Short-term kits are by far the most widely used and cost-effective tests in the world. If you are testing radon in your home for the first time, you should start with an EPA-approved single-use, short-term test.


A-1 offers a short term test kits for purchase  ONLY $13.95  Ask about our Free Radon test option. (262) 977-7799


  • Long-term tests are the best way to determine your exposure to radon during different seasons and living conditions in your home. They are typically used after a short-term test returned radon levels between 2–3.9 pCi/L.
  • At-home digital radon monitors: These portable measuring instruments allow you to take accurate readings of radon concentrations daily, weekly, and long-term. They are primarily used when needing to test multiple rooms or locations.


When is the best time to test for radon?

If you’re testing your home for the first time, radon testing can be conducted during any season, so long as the following conditions are maintained:

  • All external doors, windows, and vents are kept closed for 12 hours leading up to the test. Normal entry and exit are fine, so long as you close the door behind you.
  • No whole house, ceiling, or window fans are in operation. Heavy air circulation can increase a test’s sensitivity to radon.
  • No severe weather (heavy rain, snow, or wind) has been forecasted. These weather events can cause radon levels to temporarily spike.
  • Your radon fan has been running for at least 24 hours (if conducting a post-mitigation radon test).

If your initial radon test comes back low, we recommend retesting your home again in a different season and every few years to ensure your radon levels remain low.

Where should you place your radon test(s)?

Finding the ideal placement for your radon test(s) is arguably the most important thing you can do. To determine the best placement and number of tests needed in your home, please refer to the image below and answer the following questions.


  • Is this a real estate transaction? If it is, you will need to have a radon test conducted by a licensed radon measurement professional.
  • Does your home have multiple foundations? If it does, you’ll want to test each of those foundation types. For example, if you have a four-level split, you’ll want to test both the basement and the area at ground level.
  • Does your home have an addition? You should test both the original part of the house and the addition.
  • Does your home have a basement and a crawl space? If it does, then you’ll need to test both the basement and the room above the crawlspace (see image above).

Why do you need to test your home of radon?

According to the Wisconsin Department of Health, 2 out of every 5 homes tested in Wisconsin contain radon levels that pose significant health risks. In fact, the average southeast Wisconsin home contains radon levels that pose the same health risks as smoking 10 cigarettes a day (5.4 pCi/L). The EPA recommends fixing your home if Radon levels are higher than 4 pCi/L. However, the EPA cautions that radon levels less than 4 pCi/L still pose a risk for health issues.

Since radon is colorless, odorless, and tasteless—and radon symptoms can take years to present themselves—the only way to know for sure if radon is present in your home is to test for it.

How long do I need to leave the radon test in place?

Exactly how long a radon test needs to be left in place for an accurate reading depends entirely on the type of test. If you’re unsure, always follow the instructions on your test kit’s packaging.

  • Short-term radon tests are designed to be exposed for 72 to 168 hours (or 3–7 days).
  • Long-term radon tests are designed to be left out for 3 to 12 months under normal living conditions.
  • At-home digital radon monitors are designed to give more real-time measurements. For the most accurate test results, leave them in one location for at least a week, and be sure to use the reset button before moving to a new room.

It’s time to test your home for radon

If you still have questions, the experts at A-1 Radon Wisconsin are always here to help.

Call us at (262) 977-7799.

Browse our shop to purchase any of the test kits and detectors we covered in this guide. When you buy your test kits from A-1 Radon Wisconsin, you’ll receive a personal message where we explain exactly what your results mean and discuss the best course of action to keep you and your family safe.