DB (Decibels)
Decibels (DB) are a unit used to measure the intensity or loudness of sound on a logarithmic scale. In HVAC systems, this measurement is often used to gauge the noise level generated by equipment such as air conditioners, furnaces, or fans. A lower decibel level indicates quieter operation, while a higher level implies louder noise. For reference, a whisper is about 30 dB, normal conversation is around 60 dB, and equipment over 85 dB can start to feel uncomfortably loud.
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