Short answer: Most home appliances run at 35–90 dB(A). A fridge is about 35–45 dB, a quiet dishwasher 40–46 dB, a washing machine 50–60 dB while washing and 65–80 dB on spin, a vacuum cleaner 70–80 dB, and a blender or hair dryer 80–90 dB. Split air conditioners are among the quietest indoors at 20–45 dB, while portable generators are about 60–75 dB at 7 m.
Noise is one of the biggest differences between cheap and premium appliances, and manufacturers’ figures are easy to misread. This post gives a big table of typical decibel levels for common home appliances, explains how noise ratings work (sound power versus sound pressure, test distance, dB(A) and sones), shows how to compare two models, and explains how to measure appliances at home with a phone.
Appliance Noise Levels Chart
These are typical ranges in dB(A) at about 1 m unless stated otherwise. Individual models, installation and room acoustics all make a difference.
| Appliance | Typical dB(A) | Notes |
|---|---|---|
| Refrigerator or fridge-freezer | 35–45 dB | Louder when the compressor starts or defrosts |
| Quiet dishwasher | 40–46 dB | Premium and night-mode models |
| Standard dishwasher | 45–55+ dB | Older models are louder |
| Washing machine (wash) | 50–60 dB | Water filling and drum turning |
| Washing machine (spin) | 65–80 dB | Higher spin speeds are louder; uneven floors add vibration |
| Tumble dryer | 55–70 dB | Heat pump models tend to be quieter |
| Microwave | 55–60 dB | Plus the beep |
| Range hood (extractor fan) | 55–70 dB | Top speed is much louder |
| Vacuum cleaner | 70–80 dB | Some quiet models go lower |
| Blender | 80–90 dB | Louder with ice |
| Hair dryer (near the head) | 80–90 dB | Right next to the ear |
| Window air conditioner (indoors) | 50–60 dB | Compressor and fan in one box |
| Split air conditioner (indoor unit) | 20–45 dB | The compressor is outside |
| Portable generator (conventional) | Roughly 60–75 dB at 7 m | Much louder close up |
| Inverter generator | Typically 50–60 dB at 7 m | Engine slows at light load |
For context, 40 dB is a quiet library (is 40 dB loud), 60 dB is normal conversation (is 60 dB loud) and 80 dB is heavy traffic (is 80 dB loud).
Kitchen Appliances: Fridge, Dishwasher, Microwave and Hood
A fridge at 35–45 dB is usually the quietest appliance in the house, but it runs day and night, so a buzz or rattle is noticeable in a quiet kitchen or open-plan flat. Quiet dishwashers at 40–46 dB are hard to hear over normal conversation; is 45 dB loud gives a feel for that level. Range hoods vary most: 55 dB on a low setting is fine, but 70 dB on boost makes talking difficult. Blenders are the loudest kitchen item at 80–90 dB, which is still safe for the short time they run; the 85 dB guide explains when that level becomes a concern.
Laundry and Cleaning: Washing Machine, Dryer and Vacuum
Washing machines are quiet while washing but much louder on spin, where 65–80 dB is common. Much of the spin noise is vibration passed into the floor, so a level machine on a solid floor can be several decibels quieter than the same model on a wooden floor. Tumble dryers sit at 55–70 dB, and vacuum cleaners at 70–80 dB are loud enough to make conversation hard, the level in is 70 dB loud. In flats, late-night spin cycles are a common cause of neighbour complaints; apartment noise complaint levels explains what is usually considered reasonable.
Air Conditioners and Generators
With a split air conditioner, the noisy compressor sits outside, so the indoor unit can run at 20–45 dB, quiet enough for a bedroom on its lowest fan setting. Window and portable units hold everything in one box and are usually 50–60 dB indoors, the level described in is 55 dB loud. The outdoor unit of a split system is louder and can bother neighbours, so its position matters.
Generators are normally rated at 7 m (23 ft). Conventional portable generators are roughly 60–75 dB at that distance, and much louder close up. Inverter generators, which slow the engine down when the load is light, are typically 50–60 dB at 7 m, which is why they are popular for camping.
How Manufacturers Rate Appliance Noise
Appliance figures are measured under standard test conditions, and there are two kinds of number. Sound power (LWA, in dB re 1 pW) describes the total noise the machine emits, whatever the room or distance. Sound pressure (LpA) is what a meter or your ear picks up at a given point, and it depends on distance and room acoustics. For the same appliance, the sound power figure is usually higher than the sound pressure you measure a metre away, so the two can’t be compared directly. Sound pressure level and the decibel units guide explain the difference.
- Test distance: a sound pressure figure means little without a distance, such as 1 m for appliances or 7 m for generators.
- A-weighting: almost all appliance figures are dB(A), which matches how the ear hears; see dB vs dB(A).
- EU energy labels: current EU labels for several large appliances, such as dishwashers, washing machines and fridges, show the airborne noise emission in dB(A) re 1 pW (a sound power figure) with a noise class letter from A to D, where A is the quietest.
Sones: How Fans and Range Hoods Are Rated
In North America, bathroom fans and range hoods are often rated in sones rather than decibels. Sones measure perceived loudness on a linear scale: 2 sones sounds twice as loud as 1 sone. One sone equals 40 phons, about as loud as a 40 dB tone at 1 kHz, and each doubling of sones adds about 10 phons. A 0.3 sone bathroom fan is very quiet, while a range hood rated at 6–8 sones on high is loud. The decibel calculator converts sones to phons and dB, so you can compare fans with appliances rated in decibels.
How to Compare Two Models
Small differences in decibels matter more than they look. A 3 dB difference means double the sound energy, which is just noticeable. A 5 dB difference is clearly noticeable, and a 10 dB difference sounds about half as loud. So a dishwasher rated 44 dB has half the sound energy of one rated 47 dB, and one rated 42 dB sounds about half as loud as one rated 52 dB. Only compare figures of the same kind (sound power with sound power, at the same test distance and weighting). The logarithmic decibel scale explains the maths, and the volume level comparator lets you hear what a few decibels of difference sound like.
How to Measure Appliance Noise at Home
- Measure the room with the appliance off using the background noise test. You need a background at least 10 dB below the appliance for a clean reading.
- Open the free decibel meter and hold the phone 1 m from the front of the appliance, at about 1–1.5 m height.
- Record for 30–60 seconds in the loudest phase (spin, compressor running, top fan speed) and note the average.
- If the background is only 3–10 dB below the appliance, subtract it with the decibel calculator mentioned above.
- For appliances that cycle, such as fridges and air conditioners, log an hour or a night with the noise monitor.
A phone gives a useful comparison between appliances and over time, but not a certified rating; how to measure decibels covers good technique, and the frequency analyzer can show a hum or whine, such as a fridge compressor tone. Room noise levels lists typical quiet targets for kitchens, bedrooms and living rooms, and the safe noise levels chart shows that none of these appliances is a hearing risk in normal use, except perhaps a hair dryer used daily right next to the ear.
Frequently Asked Questions
What is a quiet dishwasher in dB?
Around 40–46 dB(A) is quiet, and many standard models are 45–55 dB. Label figures are usually sound power, so compare like with like.
How many decibels is a refrigerator?
Typically 35–45 dB(A). It is louder for short periods when the compressor starts or during defrost.
How loud is a washing machine?
About 50–60 dB while washing and 65–80 dB on the spin cycle, depending on spin speed, balance and the floor.
How loud is an air conditioner in dB?
Split system indoor units are about 20–45 dB(A), and window units about 50–60 dB(A) indoors.
How many decibels is a generator?
Conventional portable generators are roughly 60–75 dB at 7 m, and inverter generators typically 50–60 dB at 7 m. Close up they are much louder.
How loud is a vacuum cleaner?
Typically 70–80 dB(A), about as loud as a busy street.
Addito is an audio analysis and sound measurement writer specializing in decibel testing, noise level analysis, sound frequency measurement, and audio engineering tools for creators, audio professionals, students, and everyday users. He creates practical content focused on sound measurement, hearing safety, microphone testing, and acoustic analysis tools.