We are not of the opinion that nois

We are not of the opinion that noise levels are unusually high, we just need to reduce what noise there is by placing the unit within an enclosure, although it would help if you had octave band sound pressure level data measured at 1m, or perhaps sound power levels in octave bands. Nonetheless, do you have experience of customers or companies that build enclosures for your heat pumps in order to reduce noise?We are concerned about the size of such an enclosure and whether there are guidelines you can recommend as to physical dimensions to enable sufficient airflow and not impede on the working of the heater whilst reducing the noise transmission.Any help regarding minimum size and perhaps even which materials may be best used would be very much appreciated, or perhaps you could recommend a company that specialises in such enclosures?