We had our house tested for radon last year and the levels were pretty high. After asking around, we found a couple of local radon contractors who specialize in mitigation systems. They came out to inspect our crawlspace and installed a sub-slab depressurization system. The work was neat and the fan is quiet, plus they gave us a warranty on the equipment. It's not something you think about until you're dealing with it, but having a trustworthy local person makes a big difference. local radon contractors 7