Radon Mitigation in Billings — Certified Technicians. Guaranteed Results. Free Estimates.

Billings sits in EPA Radon Zone 1 — the highest-risk designation. Yellowstone County regularly tests above 4 pCi/L. The national average is 1.3 pCi/L; Billings-area homes frequently test 3x that or higher. Testing is strongly recommended, and mitigation is warranted at 4 pCi/L or above.

Radon mitigation in Billings typically costs $800–$2,500 for a standard sub-slab depressurization system. Crawl space systems run $1,500–$3,500. Homes requiring multiple suction points cost $2,500–$4,000. Post-mitigation testing is included in most quotes or runs $150–$300 separately. We provide fully itemized written quotes.

Most installations take 4–8 hours in a single day. Your home is fully usable immediately after — no curing period, no restricted areas. Post-mitigation testing is performed 24–48 hours after installation to confirm levels are below 4 pCi/L.

Yes — we serve all of Yellowstone County including Billings, Laurel, Lockwood, Shepherd, and Park City. We also serve Carbon County (Columbus, Red Lodge) and Stillwater County. Most service calls are scheduled within 48 hours.

Yes — we guarantee our systems reduce radon below 4 pCi/L or we return to fix it at no charge. Sub-slab depressurization reduces radon 90%+ in properly installed systems. You receive written before-and-after test results. If post-mitigation testing shows levels above 4 pCi/L, we adjust the system at no additional cost.

Sub-slab depressurization is the EPA-recommended method. A technician drills suction points through your foundation slab, installs PVC piping, and mounts a small exterior fan. The fan creates negative pressure beneath the slab, drawing radon out before it enters the living space and venting it safely above the roofline. Operating cost is approximately $5–$15 per month in electricity.

Montana's uranium-bearing soils are the primary driver. As uranium naturally decays in the soil, it produces radon that migrates upward through foundation cracks and utility penetrations into homes. Billings sits in geological formations that elevate radon potential across the county — which is why EPA Radon Zone 1 designation covers the area.

Not necessarily. Short-term test kits cost $15–$30 at hardware stores and give results in 48–96 hours. Long-term kits ($25–$50) provide more accurate 90-day averages. In Yellowstone County, the probability of elevated levels is high enough that testing is strongly recommended for any untested home. We can also arrange professional testing.

Radon systems are more discreet than most homeowners expect. A 3–4 inch PVC pipe runs from the slab through a utility space and exits through the wall or roof. The fan is compact and quiet — similar to a bathroom exhaust fan. Most homeowners barely notice the system after installation.

If post-mitigation testing shows radon above 4 pCi/L, we return at no charge to adjust the system — increasing fan capacity, adding a suction point, or sealing additional entry points. Our written guarantee covers this. Systems properly sized for a home's foundation type achieve results below 4 pCi/L in the large majority of cases on the first installation.

Quality radon fans typically last 5–10 years with continuous operation. Most systems include a visual pressure indicator so you can verify the fan is drawing properly at a glance. Fan replacement is a straightforward swap — typically $200–$400 including parts and labor. Annual inspection is recommended, particularly before Billings winters when sealed homes accumulate more radon.

Yes — radon systems operate year-round and are particularly important during Billings's cold winters when homes are sealed against the weather. Reduced ventilation causes indoor radon to increase significantly during the heating season. A properly installed sub-slab depressurization system maintains consistent sub-slab pressure regardless of season.