--- title: "How to Find a Radon Expert in Cranberry Township, PA: Testing, Mitigation & Cost Guide | Radon Roster" description: "Cranberry Township, PA radon guide: 38% of 10,735 basement tests at or above 4 pCi/L (median 2.9). How to verify DEP certification, questions to ask, typical costs and real estate tips." canonical: https://radonroster.com/pa/city/cranberry-township-pa/radon-guide/ --- [Pennsylvania](https://radonroster.com/)›[Cities](https://radonroster.com/pa/cities/)›[Cranberry Township, PA](https://radonroster.com/pa/city/cranberry-township-pa/)›Radon guide # How to find a radon expert in Cranberry Township, PA In Cranberry Township, 10,735 basement radon tests in PA DEP's records give a median of **2.9 pCi/L**, and **38%** were at or above 4 pCi/L. That's below Butler County as a whole (47%) and about level with the statewide share (37%). The median Cranberry Township result (2.9 pCi/L) is below the 4 pCi/L line; it is still in the 2-4 pCi/L range where EPA says to consider fixing. The Butler County median is 3.6 pCi/L. Source: computed 2026-10-11 from PA DEP's [Radon Test Results](https://data.pa.gov/Energy-and-the-Environment/Radon-Test-Results-September-1986-Current-Annual-C/vkjb-sx3k) (data.pa.gov, public domain), using tests with a Cranberry Township municipality/mailing name. Counts tests, not homes, and includes repeat and post-mitigation tests. ## Cranberry Township at a glance Cranberry Township**38%** Butler Co.**47%** Statewide**37%** Share of basement tests ≥ 4 pCi/L **2.9**median pCi/L **10,735**tests on record **#19**of 33 guide cities [Get free quotes](https://radonroster.com/get-quotes/?city=cranberry-township) [Browse all Cranberry Township radon firms](https://radonroster.com/pa/city/cranberry-township-pa/) · [Butler County](https://radonroster.com/pa/county/butler/) ## Cranberry Township compared with other PA cities Among the 33 Pennsylvania cities with guides on Radon Roster, Cranberry Township ranks **#19** by share of basement tests at or above 4 pCi/L. About 4,029 Cranberry Township basement tests in DEP's records were at or above 4 pCi/L. A certified short-term test is a quick first step. Nearby city guides: [Williamsport](https://radonroster.com/pa/city/williamsport-pa/radon-guide/) · [Greensburg](https://radonroster.com/pa/city/greensburg-pa/radon-guide/) · [Quakertown](https://radonroster.com/pa/city/quakertown-pa/radon-guide/) · [Doylestown](https://radonroster.com/pa/city/doylestown-pa/radon-guide/) ## Buying or selling in Cranberry Township? Radon timing tips * Pennsylvania sellers must give buyers a property disclosure statement before an agreement of sale is signed. The Real Estate Commission's minimum form asks whether the seller knows of hazardous substances "including... radon" and whether the property has been tested ([49 Pa. Code § 35.335a](https://www.pacodeandbulletin.gov/secure/pacode/data/049/chapter35/s35.335a.html); [68 Pa.C.S. Chapter 73](https://www.legis.state.pa.us/WU01/LI/LI/CT/HTM/68/00.073..HTM)). * Sellers aren't required to test, but must not hide known defects (68 Pa.C.S. § 7308). * Real estate radon tests by certified testers follow DEP anti-tampering rules, including a signed non-interference agreement ([25 Pa. Code Chapter 240](https://files.dep.state.pa.us/RadiationProtection/BureauOfRadiationProtection/BRPPortalFiles/Chapter_240_2015-04-23.pdf)). Book the test early in the inspection contingency window, because short-term tests run at least 2 days plus lab time. * If a result is high near closing, ask certified mitigators for written quotes. Buyers and sellers often negotiate who pays for a system. General information, not legal advice. ## How to verify a Cranberry Township radon contractor's PA DEP certification 1. Check the name against DEP's current certified mitigation and testing lists in the [PA DEP Radon Services Directory](https://www.pa.gov/agencies/dep/programs-and-services/radiation-protection/radon-division/radon-services-directory). The lists are updated periodically, and ours were retrieved 2026-10-11. 2. Ask for the DEP certification number and photo ID. Pennsylvania requires anyone doing radon testing, mitigation or lab work for the public to be DEP-certified ([25 Pa. Code Chapter 240](https://files.dep.state.pa.us/RadiationProtection/BureauOfRadiationProtection/BRPPortalFiles/Chapter_240_2015-04-23.pdf)). 3. Still unsure? Call the PA DEP Radon Hotline at 800-237-2366. Every firm listed for Cranberry Township on Radon Roster shows its DEP IDs and a link to the source list. ## Nearest certified radon firms Nearest DEP-certified firms: **0** based in Cranberry Township (0 mitigation), **12** elsewhere in Butler County (1 mitigation), and **7** mitigation firms in neighboring counties. ### Kennihan Plumbing And Heating Inc ✓ PA DEP certifiedMitigation Valencia4 certified people #### Address * 530 Steiner Bridge Rd, Valencia, PA * ✉ [bill@kennihans.com](mailto:bill@kennihans.com) * [kennihans.com](https://www.kennihans.com/) #### Certified individuals * Himme, Gregory L. (mitigation #7632) * Kennihan, Jerome (mitigation #7719) * Kennihan, William (mitigation #3535) * Tosi, Zachary C. (mitigation #7630) #### DEP cert IDs mitigation #3535 · mitigation #3536 · mitigation #7630 · mitigation #7632 · mitigation #7719 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyMitigation.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F3535) [**Call** (724) 898-2587](tel:7248982587) [See all firms near Cranberry Township →](https://radonroster.com/pa/city/cranberry-township-pa/) ## Questions to ask a mitigator before you sign * What is your PA DEP certification number, and will you show your DEP photo ID? (Certified people must show it on request under [25 Pa. Code Chapter 240](https://files.dep.state.pa.us/RadiationProtection/BureauOfRadiationProtection/BRPPortalFiles/Chapter_240_2015-04-23.pdf).) * Will you do diagnostic (sub-slab suction) testing before choosing fan size and suction points? * Where will the pipe run (inside or outside), and where will the fan and exhaust go? * What post-mitigation level do you guarantee, and what happens if the retest is high? * Who does the follow-up test, and is it an independent certified tester? ## What a typical Pennsylvania radon system install involves Most systems use **active soil depressurization** ([EPA Consumer's Guide to Radon Reduction](https://www.epa.gov/radon/consumers-guide-radon-reduction-how-fix-your-home)). The installer drills a suction point through the basement slab (or seals a crawlspace with a membrane), runs PVC pipe to an inline fan, and vents the exhaust above the roofline. Then they seal major openings and add a pressure gauge. A follow-up test should confirm the level dropped. PA DEP describes the confirm-then-mitigate steps on [PA DEP: Radon in the Home](https://www.pa.gov/agencies/dep/programs-and-services/radiation-protection/radon-division/radon-in-the-home). ## Radon mitigation cost: what Cranberry Township homeowners can expect | Item | Typical range (national) | | --- | --- | | Mitigation system installed | $786-$1,274, average about $1,028 (reported range $395-$2,453) | | Professional radon test | $150-$800 | Source: [HomeAdvisor cost guide](https://www.homeadvisor.com/cost/environmental-safety/remove-radon-gas/). These are national figures, not local quotes. Prices depend on foundation type, the number of suction points and pipe routing. Try the [estimate tool](https://radonroster.com/radon-mitigation-cost/). ## Frequently asked questions **How do I find a certified radon expert in Cranberry Township, PA?** Use a firm on PA DEP's certified lists. Radon Roster lists 0 DEP-certified firms based in Cranberry Township and 12 more in Butler County. Confirm any name in the [PA DEP Radon Services Directory](https://www.pa.gov/agencies/dep/programs-and-services/radiation-protection/radon-division/radon-services-directory) or call 800-237-2366. **Is radon common in Cranberry Township?** In PA DEP's test records, 38% of 10,735 basement tests with a Cranberry Township address were at or above 4 pCi/L (median 2.9 pCi/L). Results vary house to house, so only a test tells you your level. **How much does radon mitigation cost in Cranberry Township?** We don't have Cranberry Township-specific price data. A national cost guide puts typical installs at $786-$1,274 (average about $1,028). Get written quotes from certified local mitigators. **Do I need a radon test when buying a home in Pennsylvania?** It isn't required by state law. The seller's disclosure form asks about known radon and past testing, and many buyers order a test during the inspection period. Real estate tests by certified testers follow DEP anti-tampering rules. **How long does a radon test take?** Short-term tests run 2 to 7 days. Long-term tests run more than 90 days. PA DEP suggests confirming a high short-term result before deciding on mitigation. **Want firms to contact you?**One request to Cranberry Township mitigators[Request quotes](https://radonroster.com/get-quotes/?city=cranberry-township) Our advice ## Before you hire in Cranberry Township 1. Ask for the DEP cert ID and match it to the listing. 2. Get at least two written quotes for mitigation. 3. Retest after the system is installed. PA Radon Hotline **800-237-2366** Typical mitigation cost $786–$1,274 National range (HomeAdvisor). No local price data; quotes vary by foundation type. [Estimate your cost →](https://radonroster.com/radon-mitigation-cost/) ## Want firms to contact you? Send one request to certified mitigators who serve Cranberry Township. [Request quotes](https://radonroster.com/get-quotes/?city=cranberry-township)