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Radon gas testers in Grand Junction
Square One Radon is the premier choice for radon measurement and mitigation on all projects small and large, old and new. Owner and founder, Rob Hartop, brings over 12 years of radon industry experience along with a multitude of credentials including NRPP specialty certifications for new construction, multifamily, and advanced mitigation techniques. We are licensed in the State of Colorado, and are fully insured, certified, and bonded. We can mitigate any home or building, and will give you a free quote right away. Ask about our industry-leading guarantee!
"Rob's remediation plan was clear and dealt with two crawl spaces simultaneously with one fan. The other contractor's we got estimates from were looking at two systems. His laborers were friendly and competent. They also cleaned up after themselves at the end of the first day even though they were coming to finish the job the next day. Nice clean up at the end of the job."
Cherlyn C on June 2025
Square One Radon is the premier choice for radon measurement and mitigation on all projects small and large, old and new. Owner and founder, Rob Hartop, brings over 12 years of radon industry experience along with a multitude of credentials including NRPP specialty certifications for new construction, multifamily, and advanced mitigation techniques. We are licensed in the State of Colorado, and are fully insured, certified, and bonded. We can mitigate any home or building, and will give you a free quote right away. Ask about our industry-leading guarantee!
"Rob's remediation plan was clear and dealt with two crawl spaces simultaneously with one fan. The other contractor's we got estimates from were looking at two systems. His laborers were friendly and competent. They also cleaned up after themselves at the end of the first day even though they were coming to finish the job the next day. Nice clean up at the end of the job."
Cherlyn C on June 2025
Our 5-star disaster response experts provide on-demand emergency services including flood response and restoration, water damage restoration, fire and smoke damage restoration, and mold remediation to Colorado residents in the Roaring Fork Valley and beyond. We're a locally owned and operated team of certified technicians who provide residential and commercial restoration including insurance assistance for an easy, stress-free experience.
Our 5-star disaster response experts provide on-demand emergency services including flood response and restoration, water damage restoration, fire and smoke damage restoration, and mold remediation to Colorado residents in the Roaring Fork Valley and beyond. We're a locally owned and operated team of certified technicians who provide residential and commercial restoration including insurance assistance for an easy, stress-free experience.
Fully certified and locally owned, Square One Radon offers full service radon testing, radon mitigation, crawlspace encapsulation, and new construction radon services. Square One stands apart from the competition by utilizing the most scientific and calculated approaches to providing radon testing and mitigation solutions. Precise measurements to determine and document air flow, air pressure, pressure field extension, and more are routine practice at Square One. Unfortunately, many radon companies do not invest in the tools, training and techniques required to provide the most effective and efficient solutions to radon problems. Square One Radon was founded with the ideal of offering some of the most advanced, reliable, and proven testing and mitigation technologies in an affordable and practical solution for homeowners, businesses, schools, and other clients. Rob Hartop, Owner and Founder, brings eight years of experience in the radon industry to the Western Slope of Colorado along with his NRPP certifications in both radon testing and radon mitigation. Rob is also a member of the American Association of Radon Scientists and Technologists (AARST), spent over 12 years working in customer relations, has over four years experience in automotive and industrial fluid line fabrication, and holds a Bachelor of Business Adminnistration with concentrations in finance and economics.
"Square One Radon was professional, knowledgeable, reasonably priced, prompt, and did a beautiful job. The company's owner, Rob is the best. I would recommend his company enthusiastically and without any reservations. I'm a retired consumer-protection lawyer, so I know an outstanding company when I see one."
Pat T on January 2023
Fully certified and locally owned, Square One Radon offers full service radon testing, radon mitigation, crawlspace encapsulation, and new construction radon services. Square One stands apart from the competition by utilizing the most scientific and calculated approaches to providing radon testing and mitigation solutions. Precise measurements to determine and document air flow, air pressure, pressure field extension, and more are routine practice at Square One. Unfortunately, many radon companies do not invest in the tools, training and techniques required to provide the most effective and efficient solutions to radon problems. Square One Radon was founded with the ideal of offering some of the most advanced, reliable, and proven testing and mitigation technologies in an affordable and practical solution for homeowners, businesses, schools, and other clients. Rob Hartop, Owner and Founder, brings eight years of experience in the radon industry to the Western Slope of Colorado along with his NRPP certifications in both radon testing and radon mitigation. Rob is also a member of the American Association of Radon Scientists and Technologists (AARST), spent over 12 years working in customer relations, has over four years experience in automotive and industrial fluid line fabrication, and holds a Bachelor of Business Adminnistration with concentrations in finance and economics.
"Square One Radon was professional, knowledgeable, reasonably priced, prompt, and did a beautiful job. The company's owner, Rob is the best. I would recommend his company enthusiastically and without any reservations. I'm a retired consumer-protection lawyer, so I know an outstanding company when I see one."
Pat T on January 2023
ASR Companies specializes in performing reconstruction, restoration and renovation services on occupied properties across the Western United States. Our clients include homeowners, homeowner associations, home builders, management companies, apartment owners, commercial property owners, engineers, architects, insurance companies, contractors, attorneys and government entities.
ASR Companies specializes in performing reconstruction, restoration and renovation services on occupied properties across the Western United States. Our clients include homeowners, homeowner associations, home builders, management companies, apartment owners, commercial property owners, engineers, architects, insurance companies, contractors, attorneys and government entities.
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
Frostbusters & Coolth Co. is a full-service Home Performance Contractor. We first help our clients learn their best options for improving the health, safety, comfort, & efficiency of their homes by conducting an energy audit. We then work with the customer to implement the recommended improvements to their home. We work with gas & electric utilities that offer rebates to their customers to help cover the cost of the audit & improvements. We also work with home builders as their "Energy Rater", providing consultation, design assistance, testing, and certification of their homes as ENERGY STAR qualified homes.
Frostbusters & Coolth Co. is a full-service Home Performance Contractor. We first help our clients learn their best options for improving the health, safety, comfort, & efficiency of their homes by conducting an energy audit. We then work with the customer to implement the recommended improvements to their home. We work with gas & electric utilities that offer rebates to their customers to help cover the cost of the audit & improvements. We also work with home builders as their "Energy Rater", providing consultation, design assistance, testing, and certification of their homes as ENERGY STAR qualified homes.
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.
Services we offer: Water Damage Restoration, Fire & Smoke Damage Restoration, Trauma Restoration, and Mold Remediation, If you aren't 100% satisfied let us know and we will fix it. If we can't then you won't pay for that service. In addition we offer Commercial Building Restoration Services, Emergency Services, Disaster Response, Storm Damage Restoration, Sewage Cleaning. We are available 24 hours a day/ 7 days a week / 365 days a year to Restore Your Property at Restoration 1 of Western Colorado! We guarantee our clients 100% satisfaction with our services.
Services we offer: Water Damage Restoration, Fire & Smoke Damage Restoration, Trauma Restoration, and Mold Remediation, If you aren't 100% satisfied let us know and we will fix it. If we can't then you won't pay for that service. In addition we offer Commercial Building Restoration Services, Emergency Services, Disaster Response, Storm Damage Restoration, Sewage Cleaning. We are available 24 hours a day/ 7 days a week / 365 days a year to Restore Your Property at Restoration 1 of Western Colorado! We guarantee our clients 100% satisfaction with our services.
Additional DBA - Renewal by Andersen, an Andersen Company.
"We bought an older home and several windows were letting in the winter draft. We decided this past year to have the windows replaced. From the consultation appointment to installation this company was completely professional. We did not feel forced into buying and the installers did an exceptional job. Our house stayed much warmer this winter. We will be using Renewal again!"
Jana C on April 2019
Additional DBA - Renewal by Andersen, an Andersen Company.
"We bought an older home and several windows were letting in the winter draft. We decided this past year to have the windows replaced. From the consultation appointment to installation this company was completely professional. We did not feel forced into buying and the installers did an exceptional job. Our house stayed much warmer this winter. We will be using Renewal again!"
Jana C on April 2019
FAQs for radon gas testing projects in Grand Junction, CO
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.
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