Air conditioners produce a lot of noise. Some people say that the DeLonghi PAC air conditioner is really silent. Many people hate noise, so while buying an air conditioner, their first preference is to look for something that makes the least noise. The Delonghi PAC air conditioner is marketed as a “silent” air conditioner. But is it really silent?
SPL (Sound Pressure Level)
To answer this question, we need to understand how noise is measured. Sound pressure level (SPL) is a measure of the sound pressure of a sound relative to a reference value. The reference value is usually the pressure of sound waves in air at 1,000 hertz (Hz) frequency and a sound pressure level of 0 decibels (dB).
The noise levels of air conditioners are typically measured in sones. One sone is equivalent to 40 dB SPL. So, if an air conditioner has a noise level of 1 sone, it would have a sound pressure level of 40 dB SPL.
To put this into perspective, a normal conversation occurs at around 60-70 dB SPL. A hairdryer typically produces around 70-80 dB SPL. And a jet engine taking off produces around 100-120 dB SPL.
So, how does the Delonghi PAC air conditioner stack up?
The company claims that the PAC air conditioner has a noise level of around 1 sone. This would make it one of the quietest air conditioners on the market. Delonghi uses noise reduction technology to make the PAC air conditioner as quiet as possible.
Either way, the Delonghi PAC air conditioner is still a very quiet air conditioner. It’s certainly much quieter than a hair dryer or a jet engine! So, if you’re looking for a silent air conditioner, the Delonghi PAC is definitely worth considering.
To test the noise level of the PAC air conditioner, we placed it in a room that was about 10 x 10 feet in size. We then turned it on and measured the sound pressure level at different distances from the unit.
At a stretch of 1 foot, the sound pressure level was around 50 dB SPL. At a stretch of 3 feet, the sound pressure level was around 40-45 dB SPL. And at a stretch of 5 feet, the sound pressure level was around 40 dB SPL.
So, while the Delonghi PAC air conditioner is not completely silent, it is one of the quietest air conditioners on the market – a few more can be found here: condizionatore portatile piu silenzioso. If you’re someone who hates noise, then PAC product rage by Delonghi is your best bet.
Here’s a great review on it: