Finding F-1641

“The results have shown significant improvement in the level of radon decreasing the average concentration from 425 to 70 Bq/m3 , respectively the carbon dioxide average of the measurements being around 760 ppm.”

Mareș et al. Research on Best Solution for Improving Indoor Air Quality and Reducing Energy Consumption in a High-Risk Radon Dwelling from Romania. Page 1. CKB 0466

Structure

Factor: Radon
Intervention: Radon mitigation
Setting: home
Study design: mitigation study in a house: a decentralised mechanical ventilation system with heat recovery combined with a minimally invasive active sub-slab depressurisation, with radon, carbon dioxide and temperature measured before and after installation (class 4)
Effect: difference
Caveat: a single house, and the two measures were installed together, so the sub-slab depressurisation and the ventilation cannot be separated

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.