Air purifiers have become a necessity now. With the pandemic and rising pollution levels, it is always safe to have one running in your house to filter the air that you breathe in your living space or even in your office. An air purifier can also result in better sleep as it can dissipate fresh air in the room. This in turn can reduce asthma symptoms, eliminate harmful airborne chemicals and neutralize unpleasant odors, all factors that can affect your sleep.
However, claims that say that air purifiers make a lot of noise are also true. When an air purifier is set at the highest speed it makes more noise, because it is working hard to move air through it and filter out fresh air. Typically, sound from air purifiers originates in two areas - the motor and the fan. A high-quality air purifier should blend the sound of the fan and motor for minimal noise levels.
An air purifier’s noise level is measured in decibels dB(A). Each product will have dB(A) measurement mentioned under the specifications. Manufacturers are not required to release air purifier noise levels. Therefore, if you happen to see an air purifier that doesn’t have a noise level mentioned, chances are that it is very loud. Make sure you check the noise levels of a purifier before buying it.
Sound Pressure Level Vs Sound Power Level
Sound pressure and sound power are two different measurements. Some manufactures prefer sound pressure and some prefer sound power measurements for their machines. If the sound pressure of a machine is 40 dB(A), its sound power is 50 dB(A). The sound pressure scale is lower than the sound power scale, therefore, some manufacturers prefer putting the sound pressure level of an air purifier under its specifications. Since there is no way of knowing whether the given noise level is sound pressure or sound power, it is safe to assume that machines actually might be ten times louder than what has been advertised.
Air Purifiers You Can Trust
Since brand trust is an important factor for people to buy products these days, we have personally tested noise levels for our two premium air purifiers. We have assessed both sound pressure and sound power levels of both our air purifiers at the lowest speed and highest speed so that you can make a carefully considered decision while buying an air purifier.
The AF1 air purifier from Acekool is a premium product in the market that can filter out particles as minute as 2.5 pm (particulate matter). It has a composite filter mesh that has four layers including a HEPA filter. The first layer filters out large contamination particles such as hairs and pet hairs, and the second layer removes minor contamination particles. The HEPA filter is the third layer that collects mites and allergens. The fourth layer is made of activated carbon which can effectively filter out harmful gas such as formaldehyde and benzene. It also helps remove bad odors.
The AF1 has four different modes including a sleep mode. When the machine is powered on, a buzzer goes off and alerts you that the air purifier has been switched on. You can adjust the speed of the purifier and even set a timer for up to 4 hours, a useful function while you are sleeping.
We tested the AF1 for noise levels in an anechoic room. It was found that in sleep mode, the air purifier’s noise level is as quiet as 29.55 dB(A). The sound power level was traced at 31.63 dB(A). At gear 3, which is the maximum speed of the air purifier, the sound pressure level was tested to be 52.05 dB(A) and the sound power level was at 62.32 dB(A).
This means that you can always put the purifier in sleep mode at night and leave it in your room. The sound of the air purifier wouldn’t be audible in sleep mode, assuring you peaceful sleep with the supply of fresh air. You can use the purifier at gear 3 if you need rigorous air purification in your house. Activate the machine at gear 3 preferably during the day.
The AF2 air purifier is the successor of AF1. They have similar features but the former has a child lock and dust sensor. This is the best air purifier if the air quality of your surrounding is poor. While AF1 only had 4 modes, AF2 has 5 different modes including a fourth gear featuring higher filtration speed. The air purifier noise levels were found to be at 29.08 dB(A) and the sound power levels stood at 39.35 dB(A) in sleep mode. At the highest speed, gear 4, the sound pressure level was traced at 56.08 dB(A) and the sound power level was at 66.34 dB(A).
The air purifier noise level tests on both machines prove that it can be used in your room while sleeping. The air purifiers in sleep mode allow quiet operation while you are sleeping granting you restful sleep with fresh air. If you have a baby at home these air purifiers can be helpful as it not only noiseless but can also effectively remove all minute pollutant particles floating in the air. This can induce easy and restful sleep for babies and adults alike. Both the machines are easy to use and easy to clean. They contain a four-layer filtration system with a HEPA filter for efficient air purification.
Acekool has other air purifiers that can efficiently remove dust, pollen, pet dander, and other larger particles floating in the air. The Acekool D01 is for smaller rooms and has multiple sensors to monitor your air quality. The Acekool D02 is for larger areas like living rooms and has a smart sensor with a sleep mode for quiet operation.
Always scan the specifications for air purifiers before buying these machines. Take into consideration the dimensions of your living space and buy an air purifier that is powerful enough to filter at least the area of your living room. Check the specification for air purifier noise levels and most importantly study its filtration system.