Tri-State Radon Systems LLC

Radon mitigation is the whole job at Tri-State Radon Systems. A recent customer said their radon reading went from 20 before Gary's installation to 1.8 four days afterwards, and described the install as quiet. The company holds a 5-star average across 102 Google ratings and an A+ grade from the Better Business Bureau. Its Massachusetts home improvement contractor registration, number 208762, is active on the state registry. Its Rhode Island contractor registration, number GC-48555, is active on the state registry as well. A recent customer wrote that Gary Manyak planned the pipe run on a site visit, sent a scope of work with photos of the proposed fan, electrical work and the marked pipe run, sealed the sump pump grates in the concrete, and arranged a short-term radon test after completion. A recent customer who called for a consult and a new fan said a technician told them they did not need one. A 2026 customer said the passive pipe they had installed in a new house was not up to code, and that Gary put in a whole system that cost exactly what he estimated. A 2026 customer described a sub-slab depressurization system with a single collection point. A 2024 customer said Gary upgraded an existing radon fan and then added a second system on the other side of the house, after which levels had been consistently in the "1/2 range" instead of closer to 4/5. A 2024 customer said a dead mitigation fan was diagnosed and replaced within twenty minutes, with the gauge replaced and an alarm added, all for the quoted price. A 2023 customer said post-mitigation test results all came in under 1.0 pCi/L after levels above the EPA action limit of 4 pCi/L.