In Fairfield, we evaluated a complex radon mitigation challenge after recent testing measured radon levels at 9.4 pCi/L despite an existing mitigation system already being installed at the home.

The property includes a slab-on-grade foundation built over ledge conditions, along with multiple separate foundation sections beneath the structure. The current mitigation system is more than 14 years old and only actively addresses one portion of the home, although the fan itself was replaced approximately three years ago and remains operational.

The homeowner also located older testing records showing that radon levels had previously been roughly half of the current readings, confirming that conditions beneath the home have changed over time.

Because portions of the home include ductwork buried within the concrete slab and several isolated foundation areas, the mitigation redesign required advanced planning to improve airflow communication across multiple sections of the structure.

The updated strategy includes raising the existing fan and adding a second exterior extraction point to strengthen airflow beneath the currently mitigated slab section.

In addition, a separate three-pipe mitigation system was planned for a cinder block “bunker” area located near the boiler room at the front of the home. The layout includes two extraction points along the longer wall section and one extraction point along the shorter rear wall to improve airflow coverage within that isolated foundation area.

The project also includes exterior excavation work near the front of the house to support additional piping and fan placement for the expanded mitigation layout.

One remaining middle foundation section continues to present design limitations due to restricted access and limited locations for additional mitigation or ventilation equipment placement.

This project focused on redesigning and expanding the mitigation approach across multiple isolated foundations to improve long-term radon reduction throughout a uniquely challenging structure.

Job Story

In Fairfield, we evaluated a home with radon levels testing above 4.0 pCi/L where multiple foundation conditions were contributing to a more complex mitigation design.

The property includes a standard slab foundation area along with a separate section containing large exposed boulders beneath the home. That area, measuring approximately 23 by 13 feet, was identified for encapsulation to help isolate exposed ground conditions and improve long-term airflow control beneath the structure.

Because the home includes multiple foundation sections and varying sub-structure conditions, a minimum three-pipe radon mitigation system was recommended to provide broader airflow coverage beneath the property.

Additional radon testing was also planned in other sections of the home to better understand how radon levels may vary between the different foundation areas before final system placement is completed.

The consultation focused on developing a mitigation strategy that addresses both the slab foundation and the exposed earth and boulder section beneath the home to support improved indoor air quality throughout the property.

In Fairfield, we evaluated an indoor air quality system where accessible ductwork may require repair or adjustment to improve overall airflow and system performance.

The inspection focused on reviewing exposed duct sections that were accessible without opening finished walls, allowing potential airflow or connection issues to be identified more efficiently.

As part of the visit, a complimentary sanitizing treatment was also included to support cleaner indoor air circulation throughout the home.

The overall goal was to improve airflow reliability while helping maintain healthier indoor air quality within the living space.

In Fairfield, we reviewed a home involved in a real estate transaction after radon levels tested at 4.4 pCi/L.

To support the home sale process and improve indoor air quality, a one-pipe radon mitigation system was planned for the property. The system layout was designed with venting routed along the side of the home near the exterior electrical area to maintain a clean and practical installation path.

The project focused on creating an effective mitigation solution while working within the existing exterior layout of the property during the transaction process.

In Fairfield, we evaluated an existing radon mitigation system originally installed by a previous homeowner after concerns were raised about visible cracking in the exterior piping.

The homeowner noted that the system had last been tested approximately three years ago and wanted to determine whether additional hidden cracks or airflow issues might be affecting overall system performance.

The service visit focused on inspecting the visible piping, evaluating system airflow, and checking for signs of additional leakage or deterioration that may not be immediately visible from the exterior.

Over time, exposure to weather and aging materials can affect exterior mitigation components, making periodic inspections important for maintaining reliable radon reduction and proper airflow beneath the foundation.

In Fairfield, we evaluated an existing radon mitigation system originally installed by another company after the homeowner reported increased fan noise since installation.

The visit focused on determining whether the system could be serviced or if a fan replacement might eventually be needed to restore quieter and more consistent operation.

At this stage, the appointment remained a diagnostic service visit only, allowing the system to be inspected and reviewed with the homeowner before any replacement work would be considered.

The goal was to assess overall fan performance and help determine the best long-term solution for maintaining effective radon mitigation while reducing operational noise.

This 5+ year-old radon mitigation system had not been inspected or serviced since the client moved in. Although there were no obvious issues with the system at the time of visit, the long gap between service appointments prompted us to take precautionary measures.

To ensure continued effectiveness, we left a radon test kit so the homeowner can monitor current radon levels. This will help determine if further system updates or fan replacement is needed.

No additional repairs were required at this time, but routine servicing and testing are key to maintaining a safe and healthy indoor environment.

In Fairfield, CT, we performed a fan replacement for a homeowner whose radon system had stopped functioning. Installed over a decade ago, the fan had run its course. The homeowner also had vapor barrier paint on the walls and floor, applied by CT Basement Systems in 2014, now peeling in several areas. The homeowner is not interested in full basement waterproofing—he doesn't get flooding, only moisture. He’s looking for a practical, effective solution—possibly a Sedona dehumidifier and reapplication of a vapor/moisture barrier product. CT Basements is scheduled for Thursday, but the client prefers a no-pitch, real solution conversation. Please talk to the client about what was previously applied, so we can quote a recoat-only option that fits his actual needs.

In Fairfield, CT, a 1954 home preparing for sale tested at 8 pCi/L for radon—well above recommended safety levels. Our team designed a two-pipe radon mitigation system, placing one line near the home’s 10x13 crawl space, which is part of a larger 780 sq ft basement. The crawl space is scheduled for encapsulation, and we coordinated efforts with the homeowner’s agent and CT Basement Systems. With a water guard already in place, our system was designed for full compatibility and futureproofing. A smart, sale-ready radon solution.

In the picturesque town of Fairfield, CT, a 1950s home presented a challenge that could no longer be overlooked. With radon levels reaching an alarming 11 both in the basement and on the slab, the need for an effective mitigation strategy was evident. Our team took on the project with precision and a commitment to not only lower these levels but also to ensure the safety and peace of mind for the home's residents.   Process Details: The cornerstone of our approach was the installation of the Eagle Extreme fan, a choice driven by its exceptional performance in reducing radon levels. This system was integrated with two meticulously positioned pipes—one embedded in the foundation and the other within the slab. These pipes, working in harmony, channel radon from beneath the house and expel it through the left side, preventing it from entering the living spaces.   A crucial aspect of our strategy was the decision to keep the sump pump uncovered. This choice was made to maintain the pump's accessibility and functionality, considering the home's existing water management needs. However, to complement the radon mitigation efforts and address the potential for moisture-related issues, a moisture guard was installed. This addition ensures that the mitigation system operates optimally, by preventing excess humidity from compromising the system's efficiency.   Added Assurance: Understanding the importance of long-term reliability, the installation was completed with the addition of a warranty for the system. This warranty represents our commitment to quality and the homeowner's assurance of a sustained reduction in radon levels.   Conclusion: With the gauge now reading a significantly reduced 2.5, the installation marks a substantial improvement in the home's indoor air quality. The combination of the Eagle Extreme fan, strategic piping, moisture guard, and the warranty encapsulates our holistic approach to radon mitigation. This Fairfield home now stands as a testament to the effectiveness of modern mitigation techniques, ensuring a safer environment for its inhabitants.