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Tri-State Radon Systems LLC
Radon readings cut from 20 to 1.84.4
Humble Works Construction, Inc.
Load-bearing wall opened with an LVL beam4.3
Verified record
TWR Services does radon mitigation. In a 2017 post on r/rhodeisland, a Reddit commenter followed up to say they had hired TWR and that it did a great job, describing low pressure sales and quality work, and added not to judge its radon mitigation work by the quality of its website. A 2021 Reddit commenter on r/RhodeIsland said they live in the area and went with TWR Services. TWR Services' Rhode Island contractor registration, number GC-14564, is expired on the state registry.
“We live in the area and went with TWR services.”
“Wanted to follow up and say we hired TWR and they did a great job. Low pressure sales and quality work. Don't judge their radon mitigation work by the quality of their website ;)”
“TWR Services is a great company”
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1 change recorded — last scanned Oct 29, 2026.
Radon readings cut from 20 to 1.84.4
Load-bearing wall opened with an LVL beam4.3
