Home office noise reduction, one machine at a time

Xerox's B230 laser printer declares 53 dBA while printing one-sided and just 16 dBA sitting in ready, both at one metre, and in a home office the second number describes far more of your day than the first. That gap is the whole idea behind home office noise reduction: most of what your microphone hears comes from machines idling, waiting or humming, not from the loud moments.

No single machine is usually to blame. A computer fan spins up during a video call, a drive seeks, a printer wakes, a heater hums under the desk, and a few feet from a microphone they add up to what everyone else on the call hears.

This page is the hub for our quiet home office guides: what makes the noise, how each category's makers state it, and which guide has the detail. Every product figure below is kept in the bels, dB(A) or plain dB its maker printed.

How quiet should a home office be?

No official target exists, so use your own voice. The NIDCD, a US federal institute for deafness and other communication disorders, places a whisper at 30 dB and the hum of a refrigerator at 40 dB. For normal conversation it gives 60 to 70 dBA.

Anything running near conversation level competes with you on a call.

Small gaps count for more than they look, because the National Park Service says 10 dB more sounds twice as loud. The room adds to it. Indoors, OSHA notes, sound falls away less quickly than in open space because surfaces reflect it, so a small room with a hard desk, bare walls and a window holds on to more of each machine's noise than you would guess. The room by room version is in how quiet is quiet enough.

Eleven machines, four ways of stating noise

Up to eleven noisy machines can share a home office, and their makers describe that noise in at least four different forms. One example per machine from our guides shows what a useful spec sheet looks like.

Each row stands alone. Bels, dB(A) and plain dB sit side by side, some at a metre and some at no stated distance, so nothing here says one machine is louder than another.

Look twice at two rows. A UPS fan that never stops belongs with the computer, as part of the background of every hour, and a printer left in ready all afternoon deserves more of your attention than its printing figure.

Bels and dB(A) are different quantities

Home office gear is where sound power and sound pressure meet, and reading one as the other is the most common mistake on these spec sheets.

Sound power describes the machine itself, wherever you stand. Computer and printer makers declare it in bels, written B(A), where a bel equals ten decibels. Apple gives the Mac mini a 1.3 B declaration, and Dell gives the OptiPlex Micro 7020 2.7 bels at idle.

Sound pressure, in dB(A), describes what arrives at a microphone placed at a stated spot. At the operator position the Mac mini's figure is 4 dB, and the Dell's, at idle, is 15.4 dB.

HP shows how easily the two get confused. Its LaserJet MFP M234dw is declared at 6.6 B(A) of sound power, and the international datasheet adds 51 dB(A) of sound pressure. That 6.6 is not a 66 you would hear.

Canon muddies it further by writing sound power in decibels: "Active: 69.3 dB or less" for the MF275dw, which works out to 6.93 B. The row label, not the unit, tells you which quantity it is. Sound power vs sound pressure has the full explanation.

Heaters, fans, air conditioners, shredders and standing desks follow neither convention. They print a dB or dBA figure, usually with no distance and often with no setting, which lets you compare products within one category and no further. For the units, see dBA explained; for why one shredder maker's figure says little beside another's, see mixing brands on a dB rating.

For a computer, read the idle figure

The computer runs all day, and for most of those hours it is idling. Its load figure only describes the stretches when it works hard.

• The quietest desktop PCs ranks desktops and all in ones by declared sound power under ISO 9296, keeps mean and upper limit conventions apart, and shows which makers declare a processor load mode as well as idle.
• The quietest mini PCs separates machines declared under the standards from brands that measure in their own labs, and covers one fanless machine with no figure at all.
• The quietest laptops covers laptops with declared figures, from fanless MacBooks upward, with the two sound power conventions kept apart.
• The quietest laptops under $1,000 covers five budget laptops with declared noise, including the one ThinkPad under that price with a declared processor load figure.

Self-built machines get their noise from the parts.

• The quietest PC cases ranks cases by the published ratings of the fans they ship with, since no case maker we found publishes a figure for the case itself.
• The quietest PC fans explains why every fan figure is a full speed, open air maximum, and why a bigger fan run slowly beats the lowest number.
• The quietest CPU coolers covers air, low profile and liquid coolers, and the few makers with figures at partial load.
• The quietest power supplies explains the Cybenetics letter grades most makers give instead of decibels, and the one maker with a figure at several loads.

Drives, a NAS and a UPS run when nobody is working

These three keep going after you log off, so idle is again the number to find.

• The quietest hard drives ranks drive families by idle and seek figures, and shows why one maker's data sheet and manual give the same drive in units that do not convert.
• The quietest NAS boxes covers enclosures, the one maker that documents its test setup in detail, and why the drives in the bays decide most of what you hear.
• The quietest UPS battery backups covers the cooling fan, which on some units never stops and speeds up under load or on battery, and how to silence the outage alarm.

A NAS with spinning drives on the desk and the same NAS in a closet make for two very different offices. Distance and a door do more than any gap between spec sheets.

Are printers and shredders loud?

While they run, yes. They run for minutes, though, not hours.

The quietest printers for a home office sorts printer figures into sound pressure, sound power and unlabelled dB, and ranks within each group. The B230 figures from the opening are the model to look for: a printing number and a ready number, both at a stated distance.

The quietest paper shredders covers what shredder makers publish, why the one labelled condition is idle rather than shredding, and why run time counts as much as the figure.

Timing is the cheapest fix for both. Print and shred when you are off a call.

Heaters, fans and the rest of the room

Heating and cooling deserve the closest look. They can run through your whole working day, often within reach of your chair.

The quietest standing desks covers motor figures, nearly all ceilings with no condition attached, for a machine that moves for seconds at a time. The quietest walking pads sorts each walking pad figure by what it covers, idling, no load or top speed, and explains why a slower pace on calls and a mat under the pad do more than a lower number on a product page.

Keyboards and mice are a quieter problem with almost no figures. Quiet keyboards explains why so few keyboard makers publish one, and what silent switches, dampeners and scissor keys change; on a call the microphone often sits nearer your keys than your mouth. Quiet mice covers silent switches, scroll wheels and feet, and how to read a "90% less noise" claim, which each maker measures against one of its own older mice.

The quietest desk fans finds the makers that put a number on the speed you will really run. A desk fan sits within arm's reach of the microphone, so its call speed decides more than its lowest figure.

The quietest air purifier for a home office looks for the figure at the medium speed you run through a workday, which few makers print, and flags auto modes that ramp up mid-call.

The quietest space heaters for an office covers the few heater makers with a figure, fan against fanless heaters, and the manuals' rules on outlets and clearance. The quietest space heater for a home office narrows that to the desk itself: a heater under your legs, its tip-over and cool-touch protection, and the wattage it adds to a circuit already feeding a computer.

The quietest portable air conditioners explains why most portable figures describe the lowest fan speed, and why the makers' own figures favor a window unit for quiet if your window allows one.

Whatever heats or cools the room, read its figure for the setting you will use.

Few printer and UPS sheets say when their figure was taken

Computer spec sheets usually name the state their figure describes. Printer and UPS sheets mostly do not. We counted by reading the noise entry for every product in three of our catalog files on 26 October 2026, each entry quoting the maker's spec page, data sheet or manual, and counting a product once however many figures it prints; the wider market will differ.

Of the 59 desktops, laptops and mini PCs, 46 carry a declaration under ISO 9296 or ECMA-109 that includes an idle figure: all 19 desktops, all 20 laptops and 7 of the 20 mini PCs. Another 11 mini PCs give a figure from the maker's own lab or with no condition at all. Two publish nothing.

Mini PCs are where the sheets split. Minisforum gives idle and full load figures at 50 cm for three of its five models on file, which you can work with. Beelink prints the same 32dB on every current model, with no state, distance or standard, and that tells you nothing about the one on your desk.

Printers are thinner still. Eight of the 22 put a number on the ready state: seven Brother models at 30 or 40 dB, and the B230 at 16 dBA at one metre. Three Canon models describe standby as "Inaudible", a term Canon defines against ISO 7779, and the other 11 give printing figures only.

Of the 15 UPS units, the 8 APC models print an "Acoustic level" in dBA with nothing else attached. The remaining 7 name a distance of 1 or 1.5 metres, and only CyberPower's OL1K5RTHD ties its figure to a load: "17.3 dBA to 47.6 dBA (0 to 100% load)". That range tells you more than any single figure. Tripp Lite's SMART1500SLT manual adds that "The fan runs continuously", at a higher speed in battery mode, so the noise you live with during an outage is not the one on the page.

How do you make a home office quieter?

Sort the machines by when they run, read the right figure for each, and watch what sits nearest your microphone.

Start with what runs all day. The computer, a NAS, a UPS fan, a heater or an air conditioner belong here, and their idle or low setting figures are the ones to compare.

Then the bursts: the printer, the shredder, the desk motor. Schedule them away from calls.

Before any number, check the quantity. Bels of sound power, dB(A) of sound pressure and a bare dB only compare with their own kind, and only within a category.

Whatever is closest to the microphone, a desk fan or a computer on the desk, reaches your call first.

Last, the room. Bare, hard surfaces bounce sound back, and no maker's figure accounts for the surfaces in your office.