Application Guidelines

Sound

The ICP inverter variable speed heat pump adjusts its operating speed through 5

available stages. The operating stage will depend on the load demand of the home as

well as outdoor temperature. The operating sound can vary significantly between

cooling to heating modes; from as low as 56 dBA in minimum cooling stage to 73 dBA in

maximum heating stage. The unit will operate at low stages the majority of the time and

increases to maximum speed only at cold outdoor temperatures. See chart below for

sound ranges.

The ICP inverter heat pump will operate extremely quietly in cooling mode and will likely

receive only complements from customers regarding its sound. In heating mode, the

unit will operate at higher compressor RPM’s at cold outdoor temperatures and the

sound may be noticed by the customer while it was totally inconspicuous during the

summer. Make the customer aware of these sound differences and let them know that

the higher speed in heating mode helps the system deliver high efficient and

comfortable heating.

56 56 56

72 72

71 71

24 25 36 37 48 60

Cooling Min Cooling Max Heating Max