Use of air-cleaning devices to create airborne particle-free spaces intended to alleviate allergic rhinitis and asthma during sleep

This paper describes the performance of a comprehensive experimental study to evaluate the capabilities of 6 different air-cleaning devices that included either HEPA filtering or electrostatic precipitation. Five were portable and were intended to provide air cleaning for bedroom-sized rooms. The sixth was situated in front of the headboard to affect the particulate population for sleeping persons. To ensure a completely objective study, a special laboratory facility was constructed. The results are presented : the sixth one fulfilled its goal and was clearly superior to the others, but its sound intensity was lower than those of the fan-equipped devices.