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Q: How much does a radon mitigation system cost?

• <div><p>The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.</p></div>

Q: Can I perform radon gas abatement myself?

• <div><p>While DIY testing is possible, abatement generally requires professional installation to ensure efficacy and meet safety standards.</p></div>

Q: How long can you go without a radon fan?

• <div><p>Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.</p></div>

Q: What is the biggest source of radon?

• <div><p>The soil beneath your house is most likely what&rsquo;s causing an increased level of radon. This is because soil holds radioactivity for a long time and it&rsquo;s also what most buildings are built on. Another common source of radon is water from a source that hasn&rsquo;t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.</p></div>

Q: What is considered a safe or dangerous level of radon?

• <div><p>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.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in O'ahu, HI

*The Angi rating for Radon Detection And Reduction companies in O'ahu, HI 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 O'ahu, HI 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 August 16, 2025

Reviewed in August 2025
Handiman performed 84” door hinge replacement for a drooping door. I supplied hinges and hinge replacement kit. Job was done with exceptional care of door trim and door jam. Vacuuming during drilling and cleanup up of door landing. Overall outstanding work.
Kekoa Alo
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Reviewed in April 2025
AAA Maintenance and Remodeling is outstanding. Andy replaced my hand railing on porch and replaced a few panels that were weathered. Made it look brand new . He power washed my driveway and house . He was always on time and respectful. Very clean and professional, I recommend highly .
AAA Maintenance and Remodeling, LLC
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Reviewed in June 2024
I have found P&E Solutions to be very knowledgeable, professional, thorough and executed a fast and thorough treatment. Their service charge is very reasonable for the high quality work provided. All work agreements were fulfilled efficiently and in a timely manner. The worker double checked...
P&E Solutions, LLC.
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Reviewed in December 2023
I went very straightforward and complete and the range hood seems to be working perfectly well. Ray and his sone were friendly and courteous, and left things all tidy.
Lasala Handyman Services
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Reviewed in November 2023
I had a wonderful experience with Ds Handy Hands!! He was very knowledgeable and efficient. I am very pleased with the work done and will definitely use him again
Ds Handy Hands llc
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Reviewed in June 2023
They not only arrived on time but were very thorough and efficient in their services and in the information they provided me about my AC system and suggested a cleaning every 6mths which I now know and will continue to do to keep my family and house cool and clean air! Thank you sooo much...
Ultimate Air Conditioning
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Reviewed in May 2023
Excellent, excellent job done!! Matagi removed overgrown vines and re-hung a gutter, fixed a running toilet, a broken doorbell, and power washed patio deck, all timely and efficiently at a ressonable price. He is a life-saver and will be asked to come back for more jobs!
Windward Home Services
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Reviewed in March 2023
Jamone and his crew are the best, reliabke, on time and they have the Aloha spririt and work with tenahts of ours who had a lesser budget and worked around the budget. Mahalo J-4 removal
J-4 Removal LLC
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Reviewed in September 2022
Nainoa did a great job installing our Home Security system. He was knowledgeable about the equipment and answered any questions I had regarding the install. He made the process seamless and easy and was great to work with!
APN Alarm Company
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Reviewed in May 2021
Very quick to respond on weekend to fix and service our A/C. Techs explained process and findings throughout.
Alpha Omega Air Conditioning
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Find Radon detection and reduction specialists in O'ahu

GLOBETECK GROUP

5.0(

)

Serving O'ahu, HI and surrounding areas

In business since 1995

Free estimates

Credit card accepted

"Mohammad is very knowledgeable, he's been doing it for a very long time and it shows in his final product. I reference Mohammed's knowledge on consulting issues that can range from asbestos and other hazardous problems."

Response time2 days

Recommended by100%of homeowners

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Arete Home Inspectors

5.0(

)

Serving O'ahu, HI and surrounding areas

In business since 2008

Free estimates

Small jobs welcome

"So thankful for Joe! He responded promptly and was able to conduct his inspection the very next day. Very professional, knowledgeable and kind. I will be recommending Arete Home Inspectors to everyone. Mahalo nui!"

Response time1 day

Response rate87%

Recommended by20%of homeowners

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Hippo Home Inspections

5.0(

)

Serving O'ahu, HI and surrounding areas

In business since 2021

Free estimates

Credit card accepted

Hippo Home Inspections 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.

Response time1 day

20 neighbors recently requested a quote

Serving O'ahu, HI and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"Professional, courteous, and knows what he's doing. I would highly recommend anyone to use his service."

Recommended by100%of homeowners

Serving O'ahu, HI and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"I am awaiting for his quotation for my home and two others homes. Mrs. Julia Duarte my mother who has two homes that she would like to see his work His name is DREW. He never gave me his card, although he has my email address."

Response time1 day

Recommended by70%of homeowners

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Akamai Remediation & Management Services,

3.0(

)

Serving O'ahu, HI and surrounding areas

Credit card accepted

"The work was done on time and on budget and the workers are on time and professional."

Recommended by50%of homeowners

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Radon Detection and Reduction questions, answered by experts

The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.

While DIY testing is possible, abatement generally requires professional installation to ensure efficacy and meet safety standards.

Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.

The soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

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.

The O'ahu, HI 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.

See all articles

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•
Mar 18, 2026Mar 18, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
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Apr 6, 2026Apr 6, 2026
How Much Does Radon Remediation Cost? [2026 Data]
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
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•
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How Much Does Radon Testing Cost? [2026 Data]
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
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•
Jul 9, 2026Jul 9, 2026
Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
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•
Jul 9, 2026Jul 9, 2026
What Is Radon and How Does It Get In Your Home?
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
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•
Jul 9, 2026Jul 9, 2026
What Is Radon Testing?
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.