Radon Testing & Mitigation in Eau Claire, WI
Short-term and long-term radon tests, full mitigation system installs, and post-mitigation retests across the Chippewa Valley — including Eau Claire, Chippewa Falls, Menomonie, Altoona, and the rest of the county. Eau Claire, Chippewa, and Dunn counties are all EPA Zone 1 (highest predicted radon levels), so every home in the region should be tested regardless of age.
Real-estate-deadline tests can usually be slotted within 24–48 hours. For mitigation work, a fixed quote is provided after a short walkthrough — no add-on surprises after the install starts.
Services
Radon work covers two basic phases: finding out what your home is reading, and fixing it if the reading is too high. Both phases are handled in-region for the Chippewa Valley.
Radon Testing
Short-term (48–96 hour) and long-term (90+ day) radon tests in homes, rental properties, and pre-listing inspections. Sealed canisters, lab-analyzed results. Suitable for routine screening or as the first step before any mitigation conversation.
Radon Mitigation
Active sub-slab depressurization is the standard mitigation approach for basement and slab-on-grade homes in the region. Includes fan, PVC stack, manometer, and exterior discharge above the eaves.
Sub-Slab Depressurization
The specific technique behind most installations: a small core hole through the slab, pipe routed to a fan-driven exhaust outside. Reliably brings homes below 4.0 pCi/L when designed for the building's footprint.
Radon System Inspection
Existing radon system not running, or running but not pulling? Inspections cover fan operation, manometer reading, pipe routing, and discharge code compliance. Repairs are scoped on the spot.
Post-Mitigation Retest
A short-term test performed 24 hours to 30 days after the fan is energized to confirm the home reads below 4.0 pCi/L. Standard step on every install and required by most real-estate transactions.
Real Estate Radon Test
Inspection-period tests with tight turnaround. Continuous radon monitors (CRMs) used when same-day or next-day data is needed. Reports are formatted for buyer's agents and inspection contingencies.
Need a radon test or mitigation system in the Chippewa Valley?
Same-week appointments are typical. Real-estate-deadline tests can usually be slotted in 24–48 hours.
How a typical mitigation install goes
1. Walkthrough. The basement, slab, sump, and utility chases are looked at to choose a suction point. Crawl spaces and finished basements are common in this region — both can be mitigated, just differently.
2. Suction-point install. A 4–5" core hole through the slab, dirt cleared from below, PVC suction pipe set and sealed. The pipe runs through a closet, utility chase, or up the exterior wall.
3. Fan + discharge. Mitigation fan installed in an attic or on the exterior. Discharge stack terminates above the eaves and away from windows, per EPA and ASTM standards.
4. Manometer + label. A U-tube manometer is mounted on the visible portion of the pipe so the homeowner can verify the fan is pulling at a glance. System label and warranty paperwork left on site.
5. Post-mitigation retest. A short-term test is run 24–48 hours after energizing the fan. If the home isn't below 4.0 pCi/L, adjustments are made at no additional cost until it is.
Service Area
The full Chippewa Valley is covered, with most appointments scheduled same-week. The map below frames the service region.
Dedicated geo pages: Eau Claire · Chippewa Falls · Menomonie · Altoona
Other towns and townships served: Bloomer · Stanley · Cornell · Boyd · Cadott · Augusta · Fall Creek · Osseo . Full list on the locations page.
What homeowners say
"Test came back at 9.2 in the basement, which I didn't expect at all in a house this new. Install was clean, manometer is right where I can see it. Retest came back at 1.1."
— Brent K., Eau Claire
"Needed a 48-hour test for the inspection contingency on a Menomonie house. Got the report back in time and the buyer's agent was happy with the format."
— Sara M., Menomonie
"Old fan had quit and the manometer was reading zero. Inspection found a cracked elbow above the attic insulation. Fixed and re-tested same week."
— Doug P., Chippewa Falls
Frequently asked questions
How long does a short-term radon test take?
A standard short-term test runs for 48 to 96 hours under closed-house conditions. Results are typically available within one business day after pickup. Real-estate-deadline tests are usually scheduled to start within 24–48 hours of the request.
What radon level requires mitigation?
The EPA recommends mitigation when a home tests at 4.0 pCi/L or higher. Levels between 2.0 and 4.0 pCi/L are considered elevated and mitigation is often advised. Most homes in the Chippewa Valley test in the 2–10 pCi/L range; some basements run higher.
How much does a radon mitigation system cost in the Chippewa Valley?
Pricing typically runs $1,200–$2,200 in the Chippewa Valley for a standard active sub-slab depressurization system on a single basement. Crawl spaces, multi-zone slabs, and drain-tile systems can run higher. A fixed quote is provided after a brief site walkthrough — no surprise add-ons.
How long does a mitigation install take?
Most single-zone installs are completed in four to six hours. The system is operational the same day. A post-mitigation retest is performed roughly 24–48 hours after the fan is energized to confirm the home is below 4.0 pCi/L.
Do new homes in Wisconsin still test high?
Yes. Newer construction often tests as high as older homes — sometimes higher because tighter envelopes trap soil gas. Eau Claire, Chippewa, and Dunn counties are all designated EPA Zone 1 (highest predicted radon levels). Every home should be tested regardless of age.
Is the system warrantied?
Mitigation fans typically carry a five-year manufacturer warranty. Workmanship warranties of one to two years are standard from local installers. Specifics are confirmed in writing before any work begins.
Need a radon test or mitigation system in the Chippewa Valley?
Same-week appointments are typical. Real-estate-deadline tests can usually be slotted in 24–48 hours.