Sound Decibels Before and After Service
Summary: Sound decibels reduced from an average of 60.79dB to 56.65dB.
The graph below shows sound decibels measured from the bedroom supply vent sorted from high to low before service.
The red line shows that before service sound decibels ranged from 76.1dB to 53.6dB, averaging 60.79dB.
The blue line shows that after service sound decibels ranged from 65.2dB to 52.1dB.
Overall the service reduced sound decibels by an average 7% from 60.79dB before service to 56.65dB after service. After service 97% of the units sound measure below 60dB or less. 60dB is the acceptable measurement for new units.