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What Radon Mitigation Typically Costs in Upstate SC
Important: The numbers below are typical national ranges from public sources, mainly EPA. They are not a quote and not local pricing. The only way to know your price is a written estimate for your specific house.
The public numbers
| Item | Typical range (source) |
|---|---|
| Professional radon reduction system, overall | $800 to $2,500; average about $1,200 (EPA Consumer's Guide to Radon Reduction, rev. 2006) |
| Active sub-slab suction (most common method) | $800 to $2,500 to install; $50 to $200 per year to operate, including fan electricity and heated/cooled air loss (EPA, same guide) |
| Passive sub-slab suction | $550 to $2,250 (EPA, same guide) |
| Fan electricity | Similar to running a 60 to 90 watt light bulb continuously (Kansas State University National Radon Program Services) |
| Fan lifespan | Warranties typically 5 years, life spans 10 to 15 years (Kansas State University National Radon Program Services) |
Read these carefully: EPA's ranges were published in 2006 dollars and haven't been updated since. Labor and materials cost more now, so treat them as a rough reference point, not a ceiling. EPA's current consumer guidance puts it more simply: most homes can be fixed for about the same cost as other common home repairs.
What moves the price on an Upstate house
1. Foundation type
Upstate homes run the gamut: older mill-village houses on crawlspaces, mid-century ranches on slabs, and newer Greer and Simpsonville builds with basements or bonus-room slabs. A single basement or slab is usually the simplest. A crawlspace typically needs a sealed plastic membrane over the soil (sub-membrane depressurization), which adds material and labor. Homes with a combination of foundation types may need more than one suction point.
2. What's under the slab
If air moves easily through gravel under the slab, one suction point may cover the house. Dense clay soil, which is common in the Piedmont, can mean extra suction points or a stronger fan.
3. Pipe routing and looks
An exterior pipe run up the side of the house is usually the most direct route. Routing through a garage, closet or attic hides the pipe but takes more time. Kansas State's radon program notes that part of the cost often comes from concealing the system.
4. Sealing and extras
A sump-pit cover, major crack sealing, electrical work for the fan, and condensate considerations in humid Southern summers can all show up as line items.
5. Testing
Budget for a post-mitigation test. EPA advises one after the system is running. Some installers include it; others don't.
How to compare quotes
- Number of suction points and where they go
- Pipe route (exterior vs. interior) and fan location
- Fan model and its warranty
- What gets sealed (cracks, sump, crawlspace membrane)
- Whether the post-mitigation test is included
- Any performance guarantee, in writing
- The installer's radon certification (NRPP or NRSB)
Is it worth it?
EPA ranks radon as the leading cause of lung cancer among non-smokers (see radon health risks). EPA's guide also notes that properly installed systems can cut radon levels by up to 99 percent. For a one-time install with modest running costs, most homeowners above 4 pCi/L decide it is.
For the details of each system type, see how radon mitigation systems work.
Get a real number
Have a result already? Request a free written quote for radon mitigation in Greenville. Haven't tested? Start with radon testing, since you shouldn't pay for mitigation without a number.
Sources: EPA Consumer's Guide to Radon Reduction; Kansas State University National Radon Program Services.
Quick answers
What is the typical cost of radon mitigation?
EPA's Consumer's Guide to Radon Reduction (rev. 2006) gives a typical range of $800 to $2,500, with an average around $1,200. Those are older national figures, not a local quote.
How much does a radon fan cost to run?
EPA's guide lists $50 to $200 a year for an active sub-slab system, including fan electricity and conditioned-air loss. Kansas State's radon program compares the fan to a 60 to 90 watt bulb running constantly.