Certified Radon Gas Testing in Connecticut
Fast, continuous electronic radon monitoring for home buyers, sellers, and families across all 8 Connecticut counties.
Connecticut Homes Elevated
According to CT DPH, approximately 20% of CT homes have radon levels at or above 4.0 pCi/L.
Of Lung Cancer Overall
Radon is the leading cause of lung cancer among non-smokers, responsible for over 21,000 U.S. deaths annually.
Continuous Monitoring
Hourly computerized readings with immediate digital report delivery upon test completion.
Protect Your Family From an Invisible Threat
Radon is a colorless, odorless, and tasteless radioactive gas that occurs naturally through the radioactive breakdown of uranium in soil and rock. Because you cannot see, smell, or taste it, the only way to know if your home or future home has elevated radon levels is through professional testing.
In Connecticut, granite-rich bedrock formations create regional radon hotspots throughout New Haven, Hartford, Fairfield, and Middlesex counties. Basements, crawlspaces, and ground-floor living areas represent the most vulnerable entry points as negative indoor air pressure draws soil gases inward through microscopic foundation seams.
Whether you are completing contingency inspections on a home purchase or checking a home you have lived in for years, Grizzly Home Inspections provides certified, unbiased radon testing backed by professional continuous radon monitors.
How Our 48-Hour Continuous Test Works:
- Precision Sensor Placement: Placed in the lowest livable area of the property according to strict EPA testing protocols.
- Tamper-Proof Monitoring: Sensors record hourly temperature, barometric pressure, and motion data to verify closed-building conditions.
- Same-Day Electronic Results: Upon retrieval, data is synchronized and formatted into an easy-to-read graphical report showing average pCi/L levels.
Need Radon Testing in CT?
Add radon testing to your general home inspection or book as a standalone service anywhere in Connecticut.
Frequently Asked Questions About Radon in Connecticut
Essential facts for home buyers and property owners.
What is an unsafe radon level in Connecticut?
The EPA and Connecticut Department of Public Health (CT DPH) recommend installing a radon mitigation system if levels test at or above 4.0 picocuries per liter (pCi/L). However, the EPA also recommends considering mitigation between 2.0 and 4.0 pCi/L, as any exposure carries risk.
How does Grizzly conduct radon testing?
We deploy calibrated Continuous Radon Monitors (CRM) for a minimum 48-hour continuous sampling period under closed-building conditions. Our monitors capture hourly fluctuations in radon levels, temperature, barometric pressure, and tamper indicators, delivering an accurate, tamper-proof electronic report on the same day the test concludes.
Why are Connecticut homes particularly prone to high radon?
Connecticut's underlying geology contains abundant granitic bedrock and metamorphic shale with natural uranium deposits. As uranium naturally decays, it produces radioactive radon gas, which seeps through foundation cracks, sump pits, construction joints, and porous concrete slabs into indoor living spaces—especially basements and first floors.
What if radon levels come back high during a real estate transaction?
Radon is easily fixable! Standard active sub-slab depressurization mitigation systems typically cost between $1,200 and $1,800. Having an objective, certified test report allows buyers to request a seller credit or require professional mitigation prior to closing.