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Cooling fan decibel ratings chart4/17/2024 ![]() Many HVAC systems have two fan settings – “On” and “Auto.” The “On” setting makes the fan run during both the “On” and “Off” cycles of the HVAC. ![]() Some HVACs also have noise-reducing fan blades whose designs don’t produce as much noise as other fans, even when running at the same speed.Īpart from type, fan settings also determine noise levels. Such HVAC systems run relatively quieter than others that always have to run at full speed. Thus, looking for a relatively quiet fan will give you a relatively silent HVAC system.įor example, some HVACs have variable speed fans that run at different speeds depending on the needed heating or cooling levels. Since the fan is one of the major moving parts, it’s responsible for a sizable percentage of the noise. The HVAC system’s moving parts are responsible for most of the noise the system generates. For comparison, 70 dB is what a typical vacuum cleaner sounds like when it runs. Ratings within the 50 to 60 dB range are good enough for the outdoor units. The lower the dB, the quieter the HVAC is. The decibel (dB) is the unit for measuring noise levels. HVAC systems have decibel ratings that indicate how quiet they are. Some HVAC models are relatively quieter than others. Below are the relevant factors that determine AC noise. You can determine how quietly your AC will run right from the installation stage. However, a good AC shouldn’t be so noisy that it interferes with your home comfort or work. Some noise is inevitable when your air conditioner runs.
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