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Best Radon Testing in Washington County, PA

Compare 12 local radon testing providers in Washington County. Verified listings with real contact info.

12 verified providers · Updated 2026-03-29

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1

Home Radon Pros

4.7 ★ (12 reviews)

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2

Foundations Property Inspection

5.0 ★ (851 reviews)

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3

Mold Medics

5.0 ★ (685 reviews)

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1

Home Radon Pros

4.7 (12 reviews)
549 McCombs Rd, Venetia, PA 15367
2

Foundations Property Inspection

5.0 (851 reviews)
154 Arnoni Dr, Jefferson Hills, PA 15025
Mon–Sun 7am–9pm
3

Mold Medics

5.0 (685 reviews)
811 Washington Ave, Carnegie, PA 15106
Open 24 Hours
4

Omega Radon Measurement And Mitigation

4.6 (72 reviews)
5513 Keefe St, Pittsburgh, PA 15207
Mon–Fri 9am–5pm · Sat–Sun Closed
5

a Harmony Home Inspection, LLC

4.8 (82 reviews)
2839 Liberty Ave Suite 2509, Pittsburgh, PA 15222
Open 24 Hours
6

Radon X

4.3 (11 reviews)
1115 Cornell St, Pittsburgh, PA 15212
Mon–Fri 24hrs · Sat–Sun Closed
7

Ed Lampl Environmental and Home Inspections

4.8 (260 reviews)
462 Biddle Ave, Pittsburgh, PA 15221
Mon–Sun 7am–10:30pm
8

Shield Radon Measurement & Mitigation, LLC

5.0 (5 reviews)
258 Norris Ave, Steubenville, OH 43953
Mon–Fri 7am–9pm · Sat 7am–5pm · Sun 9am–5pm
9

Radon Detection & Control

3.5 (27 reviews)
4027 Jordan St, South Heights, PA 15081
Mon–Fri 9am–5pm · Sat–Sun Closed
10

HeRo Home Inspection

5.0 (251 reviews)
3400 University Ave Unit 4676, Morgantown, WV 26504
Open 24 Hours
11

Alpha Radon LLC

5.0 (180 reviews)
121 Cottonwood Dr, Aliquippa, PA 15001
Mon–Sun 9am–5pm
12

Vet Owned Radon

5.0 (19 reviews)
714 Venture Dr #208, Morgantown, WV 26508
Mon–Fri 8am–5pm · Sat–Sun Closed

Frequently Asked Questions

How much does radon testing cost in Pennsylvania?

Professional radon testing in Pennsylvania typically costs $150 to $300. Short-term tests (48 hours) are standard for real estate transactions. Long-term tests (90+ days) provide a more accurate annual average. The PA DEP also offers free DIY radon test kits to Pennsylvania residents through their website.

Why is radon testing so important in Pennsylvania?

Pennsylvania has some of the highest indoor radon levels in the United States. The PA DEP estimates that about 40% of homes exceed the EPA's recommended action level of 4 pCi/L. Every county in the state has homes with elevated radon. The PA DEP and EPA strongly recommend testing every home, regardless of location.

Are radon testers required to be certified in Pennsylvania?

Yes, Pennsylvania requires radon testers to be certified by the PA DEP under the Radon Certification Act. Certified testers must complete approved training, pass an exam, and follow PA DEP testing protocols. For real estate transactions, only a PA DEP-certified tester's results are accepted by lenders.

What happens if my home has high radon levels?

If radon levels exceed 4 pCi/L, the EPA recommends installing a radon mitigation system. The most common approach is sub-slab depressurization, which uses a fan and pipe to vent radon from beneath the foundation to the outside. Mitigation in Pennsylvania typically costs $800 to $1,500 and reduces radon levels by up to 99%.

When should I test for radon in Pennsylvania?

Test when buying or selling a home, after major renovations that alter the foundation, if you've never tested, or if your last test was more than 2 years ago. Testing is best done during the heating season (October through March) when windows are typically closed and radon levels tend to be highest.

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