  The Laboratorio Subterra neo de Canfranc (LSC) is the national hub for low
radioactivity techniques and the associated scientific and technological
applications. The concentration of the airborne radon is a major component of
the radioactive budget in the neighborhood of the detectors. The LSC hosts a
Radon Abatement System (RAS), which delivers a radon suppressed air with < 1
mBq/m3 of 222Rn. The radon content in the air is continuously monitored with an
Electrostatic Radon Monitor (ERM). Measurements with the doble beta decay
demonstrators NEXT-NEW and CROSS and the gamma HPGe detectors demonstrate the
important reduction of the radioactive background due to the replaced air in
the vicinity of the detectors. We also discuss the use of this facility in the
LSC current program which includes NEXT-100, low background biology experiments
and radiopure copper electroformation equipment placed in the radon-free clean
room.
