Radon Mitigation FAQ | Cincy Radon Mitigation

Question 1

What is radon and why does it matter?

Accepted Answer

Radon is a naturally occurring radioactive gas produced by the decay of uranium in soil and rock. It is colorless, odorless, and present in trace amounts nearly everywhere. It enters homes through cracks in foundations, open sump pits, utility penetrations, and hollow block walls. The EPA identifies long-term radon exposure as the leading cause of lung cancer among non-smokers and recommends mitigation at 4.0 pCi/L or above.

Question 2

How does a radon mitigation system work?

Accepted Answer

Most residential systems use active soil depressurization. A hole is cored through the basement slab, a small cavity is opened in the gravel underneath, and a continuously running fan draws soil gas from below the foundation and vents it above the roofline. The fan reverses the pressure relationship — instead of your home pulling gas upward through the floor, the system pulls it through the pipe instead.

Question 3

How long does a mitigation installation take?

Accepted Answer

A standard single-family home is typically completed in one visit of four to eight hours. Homes with multiple foundation types, crawlspaces requiring membrane sealing, or unusually large footprints may extend into a second day. The timeline is established in your written estimate before any work begins.

Question 4

What does radon mitigation cost in the Cincinnati area?

Accepted Answer

Published industry ranges place most residential systems between roughly $800 and $2,500. The actual cost for your home depends on how many suction points the foundation requires, what material the foundation is built from, how far pipe must travel to reach the roofline, and whether crawlspace sealing is involved. We provide a written estimate after evaluating the property — not a range quoted over the phone.

Question 5

Is a post-installation test necessary?

Accepted Answer

Yes. A confirming test after installation is the only way to verify the system actually reduced the radon level. Running a fan proves the fan runs — it does not prove the level dropped. We include a post-installation verification test with every system we install, and the documentation is yours to keep.

Question 6

How much electricity does the fan use?

Accepted Answer

A radon fan draws roughly the same wattage as a standard light bulb and runs continuously. For most households this adds a few dollars per month to the electric bill. Proper sealing of floor penetrations and sump covers also minimizes the loss of conditioned air.

Question 7

Will insurance cover radon mitigation?

Accepted Answer

Standard homeowner's insurance policies generally do not cover radon mitigation because it is classified as a maintenance or environmental issue rather than sudden damage. However, if mitigation is part of a real estate transaction, the cost is commonly negotiated between buyer and seller. Check with your insurer for your specific policy terms.

Question 8

When are radon levels typically highest?

Accepted Answer

Indoor radon levels tend to peak during the heating season. Cold weather increases the stack effect — warm air rising through the house draws soil gas upward through foundation openings more aggressively. Testing can be performed at any time of year, but winter readings are often the highest a home will produce.

Question 9

Does mitigation work in a finished basement?

Accepted Answer

Yes. Systems are routinely installed in finished basements. The suction point is cored through the slab in an accessible location — often a utility room or closet. Pipe routing is planned to minimize visual impact in the living space.

Question 10

Can a crawlspace be mitigated?

Accepted Answer

Absolutely. Crawlspace mitigation typically involves sealing the exposed soil with a durable membrane and applying suction beneath it. The approach differs from slab depressurization but achieves the same result — redirecting soil gas to the exterior before it enters the living space.

Question 11

What happens if the radon fan stops working?

Accepted Answer

The system includes a manometer (a small gauge on the pipe) that indicates whether the fan is drawing suction. If suction drops to zero, the fan likely needs replacement. Radon fans are mechanical components with a typical lifespan of five to ten years. Replacing one is straightforward and usually completed within a single visit.

Question 12

How loud is the fan?

Accepted Answer

Mounted outside or up in an attic and sized correctly, it is close to inaudible from inside the house. What people usually notice is a faint rush of air if they stand near the pipe. Fans get matched to the system they are serving rather than picked off the shelf in the largest size available, partly because an oversized one is the main reason anyone ends up unhappy with the noise.

Question 13

Can radon get in through a private well?

Accepted Answer

It can, although soil gas is far and away the dominant route in this part of the country. The case where water is worth investigating is a private well combined with indoor readings that stay stubbornly high after a system is in and working properly. At that point testing the water rules it in or out.

Question 14

Does having a system hurt resale?

Accepted Answer

Our experience runs the other way. An undocumented house is an open question a buyer has to price in; a house with a system and a low confirming test on file has already answered it. Most buyers read it the way they read a newer roof, which is as a job somebody else has already paid for.

Question 15

How many years does a fan last?

Accepted Answer

Manufacturers rate them for several years of running without pause and plenty exceed that comfortably. Glance at the gauge now and then, since a fan that has stopped is not always obvious from indoors, and retest every couple of years or any time a fan gets replaced.

Radon mitigation questions, answered directly

Cost, and how long it takes

Testing, before and after

Living with the system afterward

See what a system on your house would look like