Finally, an air conditioning unit produces a sound that measures between 80 and 89 dB. Exposure to noises over 85 dB can damage your hearing. The damaging effects vary depending on how long the sound lasts and how long it persists.
Sound Ranges and Ratings
Even with the varying, AC units tend to fall somewhere between 25 decibels and 70 decibels, making the loudest unit eight times louder than the quietest. A 25-decibel air conditioning unit would operate at a loudness just above a whisper, so they're hard to hear.
To operate a fixed domestic machine without restriction, the noise level should not be greater than 45 dB(A) at any time when measured at the receivers premises in accordance with the requirements of the Noise Policy.
52 dB is a super quiet noise level for an AC. However, you might be thinking, some other portable AC units also generate 52-53 dB noise levels. Here's why Frigidaire FHPH132AB1 is quieter than all other portable AC units: The difference between Low Speed and High Speed setting is minimal.
Finding the quietest air conditioners
Currently, the 50-60 dB range is as quiet as an air conditioner can get.
The Airconco 6.5 Kw Split Water Cooled Portable Air Conditioner similarly ranks at around 49 decibels. The smallest air conditioning units will generally emit less noise than a TV. A TV emits 60 decibels, whilst the Airconco 3 Kw emits just 51 to 55 decibels of sound.
Air Conditioner Sound Range
Portable air conditioning units get as loud as 55 decibels. This is a little louder than a normally humming refrigerator, which is typically around 40 decibels, and slightly quieter than normal talking, which is around 60 decibels. Some older units might be louder when they run.
In New South Wales, if a neighbour can hear your air conditioner in their house after 10pm and before 8am, then you must stop using it and during the day the noise level can't exceed five decibels.
Banging and Clanking
Banging noises are the most common sounds to come from your air conditioning unit. This is because it means there's something loose in your unit. It may be something minor like a loose nut or bolt that fell into the unit.
Ritz says a typical low-end unit might have a noise level of about 78 to 82 decibels, but the best units are about 72 to 78 decibels. Dallas-based Lennox Industries recently introduced AC and heat pump units that come in at 68 decibels.
Using these examples, most homeowners seek a quiet HVAC system that is below 60 dB. The quietest systems fall between the range of 50-60 dB.
Sudden hearing loss, tinnitus and vertigo
In rarer cases, prolonged exposure to air conditioning can also cause sudden hearing loss due to inflammation of the inner ear. Hearing loss is usually not bilateral, but affects only one ear, more often the one most exposed to air conditioning.
For residential environments, the accepted decibel level is lower. Any noise exceeding 70 dB is considered disturbing. Residential limits usually start at 60 or 55 dB (the equivalent noise of a regular vacuum cleaner).
50 dB is as loud as a quiet conversation, a quiet suburb, a quiet office, or a quiet refrigerator. Notice the use of the word 'quiet' when describing this noise level? That's because all sounds between 31-60 decibels are considered quiet.
0dB: the quietest sound a healthy human ear can hear. 40dB: a quiet library. 60dB: ordinary spoken conversation. 85dB: a food blender.
How Loud Is 60 Decibels? 60 decibels is as loud as a normal conversation between two people sitting at a distance of about one meter (3 ¼ feet). It is the average sound level of a restaurant or an office.
Trane AC systems have a decibel range of 55-75, from about the level of ordinary conversation to the level of a vacuum cleaner.
Wind noises can come from the indoor unit if the air filter is dirty. Make sure the air inlet is free of obstructions. Wind noises can come from the indoor unit if the air filter is dirty.