Radon Mitigation System Inspection in Milwaukee, WI
A radon system can look fine and still not be doing its job. Milwaukee Radon Mitigation offers radon mitigation system inspections across Greater Milwaukee for homeowners, home buyers and landlords. Owner Brian Thompson, an NRPP-certified radon mitigation specialist, checks the fan, manometer, pipe, seals and exhaust against current standards, then tells you honestly whether the system is working, what needs attention, and whether you should retest. Most inspections take under an hour and include a written report. Bought a home with a system already installed? This is the place to start.
- Fast Estimates
- Transparent Pricing
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- NRPP Certified
- Fast Estimates
- Transparent Pricing
- Clean Installations
- NRPP Certified
What is a radon system inspection?
A radon system inspection is a hands-on check of an existing mitigation system: fan operation, manometer suction, pipe and seals, sump cover, labeling and exhaust location. In Milwaukee, NRPP-certified Brian Thompson of Milwaukee Radon Mitigation in West Allis, WI, inspects systems from any installer and recommends a retest when needed.
Why Annual Radon System Inspections Matter
A mitigation system runs day and night for years. Fans wear out, pipe joints can loosen, sump covers get lifted and not resealed, and foundation cracks open as a house settles. None of that is visible to the nose, because radon has no smell.
A yearly look at the system catches problems early. The EPA also recommends retesting every two years after mitigation, and after any major renovation. Pairing an inspection with a retest gives you both: proof the hardware works, and proof your level is still low.
What Our Radon System Inspection Covers
| Component | What we check |
|---|---|
| Fan | Running, correct model for the system, no bearing noise, outside living space, secure mounts |
| Manometer | Reading present and compared to the install reading if known |
| Pipe | Joints sealed, supported, sloped to drain condensation, labeled |
| Slab and sump | Suction point sealed, cracks and openings sealed, airtight sump cover in place |
| Exhaust | Discharges above the roofline, clear of windows and openings |
| Electrical | Proper outlet or disconnect, no extension cords |
| Alarm | Working, if the system has one |
You get a written inspection report in plain language: what is working, what is not, and what we would fix first. Most inspections take under an hour. A radon retest can be added; a standard home test is $150.
How to Check If Your Radon System Is Working
Between professional inspections, you can do a quick check yourself once a month:
- Look at the manometer. The liquid in the U-tube should sit at different heights. Level liquid (both sides at zero) means no suction.
- Listen and feel. A running fan makes a low hum, and the pipe has a slight vibration.
- Check the sump cover. It should be sealed and in place.
- Look outside. The exhaust should be clear of ice, nests or damage.
- Retest every two years, as the EPA recommends.
If anything looks off, see radon fan replacement or call us.
System Inspections for Homeowners, Buyers, Landlords and Daycares
Homeowners: A yearly inspection keeps an older system honest, especially once the fan has been running for many years.
Home buyers: Buying a house with a radon system? An inspection tells you whether it was installed properly and is working, and a test confirms the level. Read should you buy a house with a radon mitigation system and see real estate radon testing.
Commercial and landlords: Multi-fan and multi-unit systems, including condo associations, get a component-by-component check. See commercial radon mitigation.
Daycares: Licensed child care providers in Wisconsin must mitigate above the EPA action level (DCF, since March 2023). Regular inspection and retesting help show the system is still doing its job.
What Customers Say
Mike B.’s system had been installed by another party back in 2013. Brian replaced the fan, rerouted the stack to improve the exhaust, and reviewed the whole system.
Melissa O. found Brian prompt and knowledgeable, and her system was still working perfectly two months later.
Radon System Inspection Cost
Inspections are quoted per job, so request a free quote. Adding a standard home radon test is $150. What can change the price:
- Retest added or not. A professional test of at least 48 hours ($150 for a standard home) shows your current level.
- System size. Multiple suction points or fans take longer.
- Access. Attic or high exterior fans take more time to reach.
- Repairs found. Quoted separately, and only done with your approval.
Why Choose Milwaukee Radon Mitigation for Your Inspection
Certified eyes. Brian Thompson is NRPP certified in radon measurement and mitigation.
Any installer. We inspect systems other contractors installed, as a standalone service.
No upsell. If your system is working, we tell you so. As Maria D.V. put it, "he didn't try to upsell but rather was genuine and honest."
Clear next steps, with repairs priced before any work.
Is Your Radon System Still Protecting You?
Book an inspection and find out for sure.
Inspected Against Current Radon Standards
We check systems against the ANSI/AARST mitigation standards and EPA guidance: fan outside living space, sealed suction points and sump, labeled piping, a working monitor, and an exhaust above the roofline away from windows. Older systems may not meet today’s standards; we explain what matters most for your safety and what is optional.
How a Radon System Inspection Works
1. Book
Call or use the quote form. Tell us when the system was installed and by whom, if you know.
3. Explain
You get a written report of findings, with any repairs priced.
2. Inspect
Brian checks every component on the list above and notes the manometer reading. Most inspections take under an hour.
4. Retest
If your last test is more than two years old, or anything was fixed, we recommend a professional test of at least 48 hours.
1. Book
Call or use the quote form. Tell us when the system was installed and by whom, if you know.
2. Inspect
Brian checks every component on the list above and notes the manometer reading. Most inspections take under an hour.
3. Explain
You get a written report of findings, with any repairs priced.
4. Retest
If your last test is more than two years old, or anything was fixed, we recommend a professional test of at least 48 hours.
What a Typical Milwaukee Radon System Inspection Looks Like
Most inspections are within about 25 minutes of our West Allis base, often in homes with block foundation walls and an older sump with clay or concrete drain tile. Many North Shore homes already have systems, so buyers there often start here. Brian works through the fan, manometer, pipe, sump lid, seals and exhaust in under an hour and leaves a written report. If something needs fixing, he prices it first; if your last test is more than two years old, he recommends a retest.
Related Radon Services
Radon System Inspection FAQs
How often should a radon mitigation system be checked?
Check your radon system’s manometer yourself about once a month, have a professional inspect it about once a year or when you buy the home, and retest every two years as the EPA recommends. Also retest after renovations, foundation work or a fan replacement, since any of these can change how the system performs.
How much does a radon inspection cost?
The cost of a radon system inspection depends on system size, access to the fan and whether a retest is added. Inspections are quoted per job, so request a free quote; adding a standard home radon test is $150. Most inspections take under an hour and include a written report. Any repairs we find are quoted separately and only done with your approval.
How do I know if my radon mitigation system is working?
Your radon mitigation system is working if the manometer shows a steady reading off zero, the fan hums with a slight vibration at the pipe, the sump and slab seals are intact, and a recent radon test is below 4.0 pCi/L. The test is the final proof; hardware checks only show the system is running.
What should my radon manometer read?
Your radon manometer should show the liquid at different heights on each side of the U-tube, which means the fan is creating suction. The exact number varies by home, so the key is that it is off zero and close to the reading marked at installation. A reading of zero means no suction: call for service.
Do you inspect systems installed by other companies?
Yes. We work on systems installed by other contractors, including systems in homes that changed owners; one customer’s system dated back to 2013. Inspecting other contractors’ systems is a standalone service: we check the design and components against current standards, explain what, if anything, needs attention, and give you a written report.
Book Your Radon System Inspection
Send us a photo of your manometer and fan with the form and we will take it from there.
Radon won't wait, why should you?
Contact Milwaukee Radon Mitigation today for expert radon testing, mitigation, and system installation services in Milwaukee, WI. Ensure a healthy indoor environment for your family by reaching out to our certified professionals for reliable and efficient radon solutions.
6301 West National Avenue West Allis, WI 53214
Radon System Inspections Across Greater Milwaukee
We inspect systems in all 19 communities we serve, including Bayside, Fox Point, Brown Deer, Hales Corners and South Milwaukee. See all service areas.