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Find Radon gas testers in Flagstaff

121 PRO, LLC

5.00(
1
)
Approved Pro

121 PRO, LLC

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

121 PRO, is committed to excellence 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.

"OK, this was a WILD ride! We finally moved in and hire a few contractors to repair the items Bill (121 PRO) highlighted on his report. Were we nervous, YES! 1st time buying a house and it is a fixer-upper. Bill was able to help us understand the complexities of each repair and was able to prioritize them for us. Bill is the defination of 'Salt of the Earth'. Also, I want to give a shout-out to our realtor David Swain. Rock Star!"

Rodger R on May 2024

121 PRO, is committed to excellence 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.

"OK, this was a WILD ride! We finally moved in and hire a few contractors to repair the items Bill (121 PRO) highlighted on his report. Were we nervous, YES! 1st time buying a house and it is a fixer-upper. Bill was able to help us understand the complexities of each repair and was able to prioritize them for us. Bill is the defination of 'Salt of the Earth'. Also, I want to give a shout-out to our realtor David Swain. Rock Star!"

Rodger R on May 2024


Avatar for Affordable Radon Southwest

Affordable Radon Southwest

4.82(
337
)
Approved Pro

Affordable Radon Southwest

4.82(
337
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
14 local quotes requested

We are a family owned and operated company specializing in Radon Gas testing & reduction. Our services include Radon Mitigation & testing, sump pump installation & pit excavation, crawl space vapor barrier installation, & crawl space insulation services. Along with our expert team of professionals, & wide portfolio of services, we also stand behind our work with a lifetime warranty on our Radon mitigation systems, at a guaranteed level of 3.9pCi/L or below! We have worked hard serving our clients for the past decade, and we would love the opportunity to earn your business whether you're a Real Estate Agent assisting a client through closing or a homeowner concerned with the dangers of Radon Gas, give us a Call Today!

"This company has great customer service. They care about their customers, putting our needs first. Very quick to scheduling and prompt on arrival time. Very educational on the process. Great work, job well done. Would definitely recommend! "

Michelle A on June 2025

We are a family owned and operated company specializing in Radon Gas testing & reduction. Our services include Radon Mitigation & testing, sump pump installation & pit excavation, crawl space vapor barrier installation, & crawl space insulation services. Along with our expert team of professionals, & wide portfolio of services, we also stand behind our work with a lifetime warranty on our Radon mitigation systems, at a guaranteed level of 3.9pCi/L or below! We have worked hard serving our clients for the past decade, and we would love the opportunity to earn your business whether you're a Real Estate Agent assisting a client through closing or a homeowner concerned with the dangers of Radon Gas, give us a Call Today!

"This company has great customer service. They care about their customers, putting our needs first. Very quick to scheduling and prompt on arrival time. Very educational on the process. Great work, job well done. Would definitely recommend! "

Michelle A on June 2025


MSP Contracting

No reviews yet

MSP Contracting

No reviews yet
27 years of experience

My company has been in business for over 12 years. I have handled problems that run the gamute of your imagination, from hoarders to hanta virus infestation to improper drainage around a house.

My company has been in business for over 12 years. I have handled problems that run the gamute of your imagination, from hoarders to hanta virus infestation to improper drainage around a house.


Ezra Builders

5.00(
1
)

Ezra Builders

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Ezra Builders is a family owned design-build company that implements integrated design methodology for construction management. We offer fixed bid and time and material contracts depending on client preference and project scope. We have a network of subcontractors we have partnered with to develop and construct our projects. Our staff includes and interior designer, Passivhaus consultant and certified Passivhaus builder, an electrician of 35 years, and carpenters who have specialized in custom home building. Ezra Builders is the only certified Passivhaus (or "passive house") builder in the state of Arizona.

Ezra Builders is a family owned design-build company that implements integrated design methodology for construction management. We offer fixed bid and time and material contracts depending on client preference and project scope. We have a network of subcontractors we have partnered with to develop and construct our projects. Our staff includes and interior designer, Passivhaus consultant and certified Passivhaus builder, an electrician of 35 years, and carpenters who have specialized in custom home building. Ezra Builders is the only certified Passivhaus (or "passive house") builder in the state of Arizona.


Avatar for Moldlab

Moldlab

4.74(
352
)

Moldlab

4.74(
352
)
Customers say: True professional
26 years of experience

Mold identification, mold test kits and testing supplies. If you suspect you have a mold problem give us a call toll free and we can walk you through your testing options.

"The self-test product was as expected. The reports require additional research to interpret and understand, so seemed more targeted at professionals."

Jessica H on February 2018

Mold identification, mold test kits and testing supplies. If you suspect you have a mold problem give us a call toll free and we can walk you through your testing options.

"The self-test product was as expected. The reports require additional research to interpret and understand, so seemed more targeted at professionals."

Jessica H on February 2018


Global Plasma Solutions

5.00(
1
)

Global Plasma Solutions

5.00(
1
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Global Plasma Solutions is a manufacturing company that sells air purification systems primarily into the commercial and residential markets. Home owners can benenfit from our systems as they are easily adapted to any HVAC system. Go to www.gpshvac.com to find a certified contractor near you to have one installed within your home.

Global Plasma Solutions is a manufacturing company that sells air purification systems primarily into the commercial and residential markets. Home owners can benenfit from our systems as they are easily adapted to any HVAC system. Go to www.gpshvac.com to find a certified contractor near you to have one installed within your home.


Avatar for SMALLJOBSNOW.COM

SMALLJOBSNOW.COM

5.00(
1
)

SMALLJOBSNOW.COM

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Angie's List customers are receiving 20% off any two or more projects performed.

Angie's List customers are receiving 20% off any two or more projects performed.


Perfection Tech

No reviews yet

Perfection Tech

No reviews yet

The world of technology can be fast-paced and frustrating. That's why we try to put you at ease, by installing and configuring your equipment correctly the first time. We pride ourselves on providing the best experience for our customers. This in turn helps provide the best business relationships and partnerships. Perfection! Why expect anything less?

The world of technology can be fast-paced and frustrating. That's why we try to put you at ease, by installing and configuring your equipment correctly the first time. We pride ourselves on providing the best experience for our customers. This in turn helps provide the best business relationships and partnerships. Perfection! Why expect anything less?


CMT Technical Services

No reviews yet

CMT Technical Services

No reviews yet
48 years of experience

CMT Technical Services (since 1978) provides a full range of environmental services such as Phase I and Phase II ESA's, asbestos surveys, lead testing, and indoor air quality surveys.

CMT Technical Services (since 1978) provides a full range of environmental services such as Phase I and Phase II ESA's, asbestos surveys, lead testing, and indoor air quality surveys.


Avatar for TG's Carpet & Restoration Services

TG's Carpet & Restoration Services

No reviews yet

TG's Carpet & Restoration Services

No reviews yet
31 years of experience

TG's Carpet and Restoration Services is the premium carpet, tile, and upholstery cleaning service in Nothern Arizona. TG's is the leading water, fire, mold and asbestos restoration and remediation experts in Northern Arizona. We have a 1 hour response time, 24hours a day.

TG's Carpet and Restoration Services is the premium carpet, tile, and upholstery cleaning service in Nothern Arizona. TG's is the leading water, fire, mold and asbestos restoration and remediation experts in Northern Arizona. We have a 1 hour response time, 24hours a day.

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FAQs for radon gas testing projects in Flagstaff, AZ

Radon is the second leading cause of lung cancer in the U.S. The gas seeps through cracks in foundations and collects in basements and other low areas. Once you breathe it in, radioactive particles lodge in lung tissue and do long-term damage. Because you can’t see or smell radon, the EPA recommends testing your home every two years—and after major renovations—to keep your family safe.

Yes—every home should be tested. The EPA advises doing it at least every two years and any time you remodel, buy, or sell. On average, one in 15 houses nationwide sits above the recommended limit, and the only way to know where yours stands is a formal test. The equipment simply measures gas levels and won’t change your indoor environment, so the process is completely harmless.

Certified radon professionals—often home inspectors or dedicated radon mitigation contractors—handle testing. These radon testing professionals follow EPA protocols and use calibrated instruments to check levels throughout your house. Hiring a certified radon specialist means results you can trust for real estate deals, insurance requirements, and, most importantly, your family’s health.

Inspectors specialize in measuring radon gas levels, while licensed mitigation contractors design and install the systems that remove it. If your test comes back high, your inspector can point you to a qualified mitigation pro who will size and install the right fan, piping, or other equipment to bring levels down.

No—standard home air purifiers don’t touch radon. They’re built to trap dust and pollen, not radioactive gas. If testing shows high levels, you’ll need a dedicated mitigation system that vents the gas from beneath your home to the outdoors. Relying on a room purifier alone won’t keep your indoor air safe.

Opening a few windows in your home might dilute radon for a short time, but the gas seeps back in as soon as they’re closed. For a lasting fix, you’ll need a professional mitigation system—often a sub-slab depressurization fan—that pulls radon from beneath the foundation and safely vents it outside.

The Flagstaff, AZ homeowners’ guide to radon gas testings

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