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*The Angi rating for Radon Detection And Reduction companies in New Castle, PA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

*The HomeAdvisor rating for Radon Detection And Reduction companies in New Castle, PA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

Last update on September 05, 2026

Top-Rated Radon detection and reduction specialists in New Castle - Updated Nov 2026

Avatar for Alpha Radon, LLC
Alpha Radon, LLC
4.9(
34
)
Radon Gas - Abatement

Serving New Castle, PA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Alex and his crew showed up exactly on time and were very professional throughout the whole process. They asked me where I wanted the exhaust pipes placed as there were many options. After the work was completed Alex left a radon testing canister and explained how to use it. The pCi/L reading before the mitigation was 7 pCi/L and after it was < 0.4 pCi/L. To top things off, Alpha also has a great warranty. I couldn't be more pleased."
Radon System with Dark Brown Down-Spouting
Simple radon system
Laundry Room
Basement
Inside work

+1

Response time10 hrs
Recommended by100%of homeowners
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Avatar for Ohio Radon Testing and Mitigation Company
Ohio Radon Testing and Mitigation Company
5.0(
6
)
Radon Gas - AbatementRadon Gas - Testing

Serving New Castle, PA and surrounding areas

In business since 2020

Free estimates

Emergency services offered

"Very professional and friendly. Answered all my questions patiently. Problem appears to be solved."
Mitigation Install
Mitigation Install
Mitigation Install
Mitigation Install
Mitigation Install

+1

Recommended by100%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

Mitigation can take several days depending on home setup, equipment accessibility, and achieving effective diffusion system sealed efficiency.

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.

Options include sub-slab depressurization, crawlspace ventilation, and sealing cracks. Choose based on home construction and radon levels.

The New Castle, PA homeowners’ guide to radon detection and reduction services

From average costs to expert advice, get all the answers you need to get your job done.

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