
Beeping microwaves, rumbling dishwashers and even the hum of refrigerators can add up to disturbing noise levels in the average kitchen. Swedish-based appliance manufacturer Electrolux this year introduced a range of quiet appliances in an effort to reduce kitchen noise emission.
The World Health Organization found noise to be not just a nuisance, but a health hazard. In its report on community noise, the WHO said noise can disturb sleep, cause cardiovascular and psycho-physiological effects, reduce performance, and provoke annoyance responses. Some of that noise may be coming from your own kitchen.
In 2007, an Electrolux report into noise in the home found that around a third of customers wished they had taken noise emissions into account when purchasing their kitchen appliances. Specifically, 29 percent of those buying washing machines, 28 percent of those buying dishwashers, 33 percent of those buying range hoods, 27 percent of those buying clothes dryers and 18 percent of those buying refrigerators wished they had taken noise in to account to a greater degree when they bought each item.
Anna Cox, marketing manager at Electrolux, said of the study: "In some cases, consumers were so unhappy with the noise their new appliance made, they eventually threw it out – or never actually used it."
Results from the Electrolux Noise Report also revealed consumers would pay more for quieter appliances, and resulted in a new line of "quiet" appliances that reduce kitchen noise emissions. In response to the findings, Electrolux introduced the world's quietest dishwasher and vacuum cleaner last month along with reduced-noise washing machines and dryers, which are green in terms of both energy efficiency and noise pollution reduction.
Electrolux attributes the reduced noise levels to aerodynamic design, efficient seals, soft motor mountings and the use of advanced sound absorption materials.
To quantify the noise associated with common household appliances, Electrolux compiled a chart comparing everyday sounds with its new appliances to help consumers get a sense of the difference a quieter appliance could make in their homes.
The problem with noise is that it is subjective – one person’s harmonious melody is another person’s nightmare. This makes it impossible to measure noise, only sound can be measured. Sound is measured in decibels.
What appears to be a small change in decibels can mean a big difference in sound levels. For instance, a change of three decibels halves or doubles sound levels. This means that a power drill emits more than 8 times as much noise as a food processor and more than 64 times as much noise as the average vacuum cleaner.
While there is no appliance quiet enough to meet the decibel level recommendation by the World Health Organization for a peaceful night's sleep, a food processor is the only kitchen appliance on the list loud enough to cause hearing loss.
The chart below gives a guide to the sound levels of some common noises:
0 dB Human hearing threshold
20dB Human whisper
30dB World Health Organization's recommendation for undisturbed sleep
37dB Electrolux "quiet" dishwasher
40dB Library
49dB Electrolux "quiet" washing machine
50dB Average dishwasher
68dB Electrolux "quiet" clothes dryer
68dB Electrolux "quiet" vacuum cleaner
70dB Average washer and dryer
78dB Average vacuum cleaner
85dB Prolonged exposure above this level can cause damage to hearing90dB Food processor
100dB Electric drill
120dB Thunder
130dB Threshold of pain
140dB Plane taking off
150dB Gunshot
Electrolux appliances are available at
Fine Lines.