InterNACHI Certified Radon Tester case studies
InterNACHI Certified Radon Tester · Put your knowledge to work in context.
The InterNACHI Certified Radon Tester credential is a professional certification offered within the InterNACHI® membership and certification ecosystem. InterNACHI® describes itself as providing certification "to help you stand out from the crowd" alongside licensing support, and it offers members access to training and education through its online education platform. The InterNACHI Certified Radon Tester case studies are 5 cases and about 3,980 words.
1The Open Sliding Door and the Four-Day Deadline
A two-story 1978 colonial with a finished basement goes under contract, and the buyer's agent orders a 48-hour short-term test using two activated charcoal devices. On arrival for placement, the tester finds the basement sliding door open to the yard, a window air conditioner running in the first-floor family room, and the homeowner's dehumidifier set to continuous drain.
808 words, about 4 min2Cold Snaps, a 900-cfm Hood, and a $650 'Fix'
A 1994 ranch with a walkout basement sits on a slab poured over a gravel bed, with a perimeter drain that discharges to daylight at the downhill side. Winter short-term tests give 6.4 pCi/L in the basement family room and 1.7 pCi/L in the main-floor living room, using one charcoal device in each location over 72 hours.
764 words, about 4 min3A 9.1 Spike, a Motion Flag, and a Landlord's Request
A certified tester deploys a continuous radon monitor in the basement unit of a duplex for a 48-hour real estate test. The report shows a 48-hour average of 4.3 pCi/L, with hourly values ranging from 1.9 to 9.1; the 9.1 reading coincides with a six-hour period overnight.
776 words, about 4 min4One Canister, a Private Well, and an Occupied Basement Bedroom
A testing firm is asked to test a 2,600-square-foot, three-level home: a finished basement with an occupied bedroom, a main floor, and an attached vented crawlspace that connects to the basement through a hatch. The family's water comes from a private well, and the previous owner's water test showed 6,500 pCi/L of radon in the water.
808 words, about 4 min5A 1.1-Inch U-Tube and a 4.9 Upstairs
A homeowner hires a contractor to fix a 7.2 pCi/L basement reading in a 1970s split-level with a block-wall foundation, a sump pit with a perforated liner, and a forced-air furnace whose return duct runs through the basement. The contractor drills one suction point in the slab near the sump, pipes it to a 3-inch PVC stack with an inline centrifugal fan, and seals the sump lid with silicone.
824 words, about 4 min