![]() In reality, other ambient sounds from the surroundings will blend with the outdoor unit’s sound and also affect the level of sound you actually hear. This is usually calculated between 1 and 5 metres from the unit. Sound power is the actual noise generated by the AC unit, while sound pressure takes into account a reduction in perceived noise as you move away. For this reason there are two ways in which sound ratings are evaluated. However, when it comes to sound, particularly outdoors, there are other factors which can affect the level of noise you really hear. Not only do you want to avoid any noise disrupting you and your family, you also need to consider your neighbours. When it comes to noise levels, you also need to think about the outdoor unit of the air conditioner. However, a modern split system residential air conditioner, housing the compressor in the outdoor unit, will be much quieter. The loudest part of an air conditioner is the compressor, which is the reason why portable ACs can be quite loud, getting as high as 55 dBA, since the compressor is part of the indoor unit. Air conditioner decibel levels can vary widely. There will be one number for the noise of the air conditioner unit inside your home, and another for the AC unit outside. The decibel rating for an AC should be given in the product specification of your unit. It used to be the norm for air conditioners to operate quite loudly, but advances in technology mean that with today’s modern AC units, noise is no longer a problem. The amount of noise generated by an air conditioner is related to its age, type and condition. From fans to motors, the moving parts of an AC unit will create sounds as they work to do their job of cooling or heating your room. These are the expected levels from within 2 or 3 metres of the source.Īs with any piece of machinery, it must be expected that an air conditioner will make some noise. To put this into some sort of perspective, below are the noise levels of some common sounds we might hear. Any prolonged exposure to noise levels above 85 dBA can cause damage to your hearing. Noise levels are on a scale from 0 dBA being the softest sound a person with normal hearing can detect, to 140 dBA, which is the level at which a noise could cause physical harm with just one exposure. ![]() However, when referring to noise levels, measurements are usually given in dBA which is adjusted to account for the sensitivity of our hearing dependent on the sound frequency. What can you hear? A ticking clock, the humming refrigerator? Perhaps the sound of a car passing by or a dog barking in the distance? Did those noises bother you before you started to focus on them? Many noises surround us every day, but unless we really concentrate on them, they generally go unnoticed, especially when they are continuous. The definition of noise is generally considered as “an unwanted, usually unpleasant, sound.” However, noise can be difficult to quantify as it is often subjective, perception varying between people and situations. While this may be true of some older AC units, air conditioner noise is not a problem with most modern units. If you have ever experienced staying in a hotel with a noisy old air conditioner rattling away through the night, you can be forgiven for thinking that if you have an air conditioner must be sacrificed for a cooler temperature. ![]()
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