The heating mechanism of the solar chromosphere is still an open scientific question. In this work we study observational constraints on the contribution to chromospheric heating from high-frequency acoustic waves. We utilize a unique combination of observations from NSO’s Dunn Solar Telescope and from the Atacama Large Millimeter Array obtained on April 23rd 2017 to estimate the high-frequency wave flux in the lower solar atmosphere. The wave flux is inferred from comparison of the observations with synthetic observables from the time-dependent hydrodynamic RADYN code. Our findings suggest thatacoustic waves may carry up to a few kW/m2 of flux, which is comparable to what is required to heat the quiet chromosphere.