Radon ?????? Who had Radon? Who knew about Radon? We are talking 40 years ago! Back in the day - we just had fire, water & dirt. Our earth tube provided more than enough seasoned air - not all of it good – poor design. We moved the "stinky" outlet (scientific name) from the interior of the house to an exterior enclosure that contained an early model heat pump. This had mixed reviews. So we reset the earth tube so that it sloped away from the house, so that it had a water drain and a filtered intake. Today's heat exchangers would cure all of these problems. The earth tubes work – being PVC, Radon can’t get in and if you live in the right area & are smart enough to design it right the first time – you won’t be disappointed.
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