There has always been a concern about acoustic emissions in traditional machinery. For example, in the transportation and power generation sectors, the market demands efficient, compact, lightweight, and low-cost devices with very low noise levels. In such a challenging context, as opposed to conventional turbomachinery, Tesla type bladeless fluid machine has the advantage of reducing the overall noise emissions level.The originality of this paper lies in its experimental acoustic signature characterization of a Tesla type bladeless blower, which has never been done before, nor is there any comparison to conventional blowers. A tailored experimental setup is described in order to evaluate the acoustic behavior of Tesla blower prototypes at different rotational speeds and distances. To achieve an accurate acoustic characterization, several measurement methods, as well as post-processing techniques, have been evaluated and compared.The results of this study have been compared with those obtained by conventional blowers, while considering the same tip speeds at different distances. A Tesla blower does not exhibit the blade passage phenomenon, as opposed to a conventional blower. A significant contribution of acoustic energy can thus be avoided which is due to its characteristic frequency and its harmonic components, which instead are significant in conventional turbomachinery overall acoustic noise.As a result of this innovative investigation, it has been determined that the air Tesla blower is significantly quieter than conventional dynamic machines, thus paving the way to novel applications for bladeless machinery, especially in those cases aimed at achieving a heightened level of acoustic comfort.