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Best radon detection and reduction specialists near Portland, ME

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

Avatar for Safe Radon Solutions, LLC
Safe Radon Solutions, LLC
4.9(
32
)
Radon Gas - Abatement

Serving Portland, ME and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Nick and Dori are a good team. I was promptly contacted by Dori and after a quick phone call, we were able to schedule an appointment for radon mitigation. Nick showed up and installed everything. It took 2 days, but that was only because the day of the initial install was very windy and rainy. Nick was very conscious of safe work and did not perform unsafe tasks. Once the install was complete, they provided me with a radon test that I submitted for validation of mitigation."
Response time1 day
Response rate86%
3 neighbors recently requested a quote
Avatar for Radon Defense
Radon Defense
4.8(
4
)
Radon Gas - Abatement

Serving Portland, ME and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

With 10 over years of experience Radon Defense is your trusted choice for all of your mitigation needs. We take pride in our work and can assure your satisfaction with your project. Give us a call today for a free estimate!\n

Kennebunkport
Radon Mitigation
3 neighbors recently requested a quote
Recommended by50%of homeowners
Mathews Home Inspections
4.9(
7
)
Radon Gas - AbatementRadon Gas - Testing

Serving Portland, ME and surrounding areas

In business since 2016

Free estimates

Emergency services offered

Although I am new to Angies List, I have more than 30 years experience in the home construction and inspection business. Starting as a building contractor in the early 80's and over 9 years as a Technical Services Compliance Specialist with Maine State Housing Authority, I have the experience and expertise you are looking for as a Home Inspector. I pride my company on reliability, great communication, integrity, and quality work. A home is the biggest investment you will make. Let Mathews Home Inspections provide you with the thorough inspection and in-depth report you need to make a confident decision. I look forward to earning your business! For a quick response, call or message me at (207) 689-8950 or email at [email protected]

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+14

Recommended by100%of homeowners
Avatar for Mathews Home Inspections  Facebook
Mathews Home Inspections Facebook
4.7(
17
)
Radon Gas - Testing

Serving Portland, ME and surrounding areas

In business since 2015

Free estimates

Credit card accepted

Although I am new to the Home Adviser web site, I have more than 30 years experience in the home construction and inspection business. Starting as a building contractor in the early 80's and over 9 years as a Technical Services Compliance Specialist with Maine State Housing Authority, I have the experience and expertise you are looking for as a Home Inspector. I pride my company on reliability, great communication, integrity, and quality work. A home is the biggest investment you will make. Let Mathews Home Inspections provide you with the thorough inspection and in-depth report you need to make a confident decision. I look forward to earning your business! For a quick response, call or message me at (207) 689-8950 or email at [email protected]

Inspection concerns
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+6

Response time4 hrs
Response rate94%
Recommended by93%of homeowners
Maine Line Water & Radon Treatment
4.9(
12
)
Radon Gas - AbatementRadon Gas - Testing

Serving Portland, ME and surrounding areas

In business since 2000

Free estimates

Credit card accepted

Maine Line Water & Radon Treatment, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time1 day
Response rate100%
Recommended by100%of homeowners
Avatar for Rhino Radon Services
Rhino Radon Services
4.2(
9
)
Radon Gas - AbatementRadon Gas - Testing

Serving Portland, ME and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"It went fantastic. Scheduling wise the gentlemen at Rhino Radon were quick to respond to our inquiry via there website were I filled out a online questionnaire. Once speaking to Henry about the specifics of my home via phone and letting him no my situation. They were prompt in scheduling a date for installation to assure my radon problem didn't delay my ability to sell the home. From the time I filled out there questionnaire on there website till the system was installed and fully operational, all took place In one weeks time. I no from experience that these days the attentiveness and service Rhino Radon provided me can be difficult to find. Having recently just finished the process of building my own home in Malden and dealing with a wide range of company's and workers. It's the little things that stand out like personal treatment,responding quick to inquiries or concerns and of course taking the time to do things properly the first time around while still treating the home with respect. Rhino Radon came recommended to me via a friend and I couldn't thank them enough for steering me in the right direction for my radon mitigation needs. I would like to do the same to anyone currently searching for a radon company. If you want the job done right and a pleasant experience, look no further for your radon needs then Rhino Radon Services.


"
Recommended by100%of homeowners
Avatar for Main Choice Inspections
Main Choice Inspections
5.0(
82
)
Radon Gas - AbatementRadon Gas - Testing

Serving Portland, ME and surrounding areas

In business since 2013

Free estimates

Emergency services offered

"Main Choice Inspections is the best inspection company out there. They are so thorough and their reports are very detailed. They really are a one-stop-shop and do everything including: sewer line scoping, well flow test, septic inspection, mold testing, water testing, air radon testing, and the list goes on. I wouldn't hire anyone else to inspect my home! Always quick to respond and answer any questions for myself and my clients. When you use MCI to inspect your home.... you have them for life! FIVE STARS!"
Recommended by92%of homeowners
Avatar for Indy Properties, LLC
Indy Properties, LLC
4.5(
6
)
Radon Gas - Testing

Serving Portland, ME and surrounding areas

In business since 2018

Free estimates

Indy Properties LLC is the solution to all of your home inspection needs. We take great pride in our extreme professionalism, timeliness, and superior customer service on every job. We make sure to develop a lasting relationship, so that the next time service is needed, there will be no question on who to call.

New wall mount propane boiler
New electrical panel
Response time20 mins
Response rate91%
Recommended by100%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

Your radon mitigation system may be loud because it’s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.

Long-term exposure increases lung cancer risks. Prolonged homestay individuals and smokers encounter heightened vulnerability and exposure concerns.

The Portland, ME 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.