Top-rated radon detection and reduction specialists.

Best radon detection and reduction specialists near Ellicott City, MD

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Ellicott City, MD?

Select your specific project to find the pro for you.

TRUSTED BY ELLICOTT CITY, MD HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon15
    Verified radon detection and reduction services reviews

Top-Rated Radon detection and reduction specialists in Ellicott City - Updated Nov 2026

Avatar for NextDay Inspect
NextDay Inspect
4.9(
526
)
Radon Gas - Testing

Serving Ellicott City, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"It all went very well Azmi came out and checked all areas of my home for Mold, particulate, and Radon as well as other gases, we opted for complete screening but they offer all size packages"
Inspections with Matthew
Inspections with Larry
Inspections with Dimitri
Inspections with Rhonda
Cracks in the Foundation- Here we find moderate cracks in the foundation, with evidence that they've been repaired before.

+738

Response time8 hrs
Response rate100%
2 neighbors recently requested a quote
Fidelity Home Inspections of Maryland
4.8(
59
)
Radon Gas - Testing

Serving Ellicott City, MD and surrounding areas

Approved

In business since 1990

Free estimates

Customers say: Quick response

"I contacted Fidelity Home Inspections of Maryland to inspect my roof. Mr. Alderson arrived on time. He was very professional. Answered all of the questions I had prior to the inspection and gave me a verbal critique after the inspection. As he promised I received a detailed written report via email within 24 hours."
Certified Fireplace & Chimney Inspector
Certified Experienced Contractor
Certified Deck Inspector
Certified Home Energy Inspector
Certified Moisture Intrusion Inspector

+4

Response time1 day
Recommended by98%of homeowners
Avatar for Eco Pro Restoration
Eco Pro Restoration
4.8(
104
)
Radon Gas - Testing

Serving Ellicott City, MD and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Jerry provided excellent service for our air mold test. He was prompt in scheduling the appointment and arrived at the property as planned. After conducting the test, we received the results in just two days, which thankfully turned out negative."
Response time9 hrs
1 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Baltimore Home Specs, LLC
Baltimore Home Specs, LLC
5.0(
4
)
Radon Gas - Testing

Serving Ellicott City, MD and surrounding areas

Approved

Warranties offered

Credit card accepted

Customers say: True professional

Home inspection company that covers the house from top to bottom. Covering from the roof to the basement and / or crawl space. Nothing is left un turned. Also, specialize in radon, mold, and lead testing. Former Level II Thermaligist (infrared scanning). I can do it all. I am also certified through the Baltimore city and county to conduct rental inspection.

1 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for D & H Demolition, LLC
D & H Demolition, LLC
5.0(
11
)
Radon Gas - Testing

Serving Ellicott City, MD and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

Leading the industry by providing a comprehensive service to residential & commercial clients in need of selective & structural demolition , hazardous material abatement and disposal , as well as mold remediation services. Call or click for your FREE estimate today!\n

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

Response time8 hrs
Response rate100%
8 neighbors recently requested a quote
Avatar for JWH Inspections
JWH Inspections
5.0(
1
)
Radon Gas - Testing

Serving Ellicott City, MD and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

Hello my name is Jason William Hornung. Buying a home is a big investment. I want to help you make a well informed decision. I have been in the residential construction field for 17 years, and have an intimate knowledge of the homes in our area having done so much work in them myself. I stay continuously trained studying current information to give the best reports out there. I've seen many things that other inspectors have missed both as a home inspector and a contractor. My inspections meet or exceed the ASHI standards of practice. WWW.Homeinspector.org/standards WWW.JWHInspections.com

Home Inspection
Home Inspection
Home Inspection
Green Certified
Radon Certified

+3

Response time2 hrs
Response rate100%
Recommended by100%of homeowners
Showing 1-10 of 49
Radon Detection and Reduction FAQs, answered by experts

Radon is the number one non-smoking cause of lung cancer in the United States, but it can cause some other concerning side effects in the meantime. If you have a raspy voice, chest pains, trouble breathing, difficulty swallowing, or any of the above, don’t hesitate to perform radon testing and install a mitigation system as soon as possible.

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

The cost to replace a radon fan ranges from $300 to $600 for the fan itself, with installation adding an additional $200 to $500. Overall, the total cost for replacement can range from $500 to $1,100, depending on factors such as the fan model, home size, and local labor rates. If the fan is part of a larger radon mitigation system, the price may be higher.

Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

The Ellicott City, MD 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.