Ultraviolet germicidal irradiation (UVGI) has been used in HVAC systems in an attempt to reduce airborne microbial contamination. This white paper examines the efficacy of UVGI and the number of factors that efficacy may be dependent on.

By comparing how DHP™ may also respond to those dependencies, the results show that because DHP™ is a near ideal gas, it is not impeded by shadowing, shielding, reflectivity, or other similar parameters.