A monitor arm is the highest-impact desk accessory most home office setups are missing. This guide covers what to look for, which to avoid, and the best options from budget to premium.
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Why a Monitor Arm Changes Everything
The single most common ergonomic problem in home offices is a monitor at the wrong height. Built-in monitor stands offer limited adjustment — usually tilt, sometimes height, rarely anything else. The result is a screen position that compromises between correct and what the stand allows.
A monitor arm solves this completely. It attaches to the back of the desk and supports the monitor on an articulating arm, allowing positioning along every axis: height, depth, tilt, angle, and rotation. You dial in your exact ergonomic requirements and the arm holds them indefinitely.
The ergonomic benefit alone justifies the investment. The secondary benefit — freeing the entire desk depth occupied by the monitor stand — makes it one of the cleanest upgrades you can make to any setup.
What to Look For
Weight Capacity
This is the critical spec. Weigh your monitor (or check the manufacturer specification) and confirm the arm's rated capacity exceeds it. Most 27-inch monitors weigh 4–7 kg; 34-inch ultrawides can reach 8–10 kg.
An undersized arm will slowly drift down over time. An appropriately sized arm holds position indefinitely.
Gas Spring vs. Spring Tension
Gas spring: A pressurised cylinder assists the arm movement, providing smooth, effortless height adjustment. The best user experience by a significant margin.
Spring tension: A coiled spring provides resistance. Works well when set correctly but can drift over time.
Clamp vs. Grommet Mount
Desk clamp: Attaches by clamping to the desk edge. No holes required. Limited to desks up to approximately 4 cm thick.
Grommet mount: Passes through a hole in the desk. More stable for heavy monitors, better for standing desks that flex during height transitions.
For most home setups, a desk clamp is sufficient.
Best Monitor Arms in 2026
Best Overall: Ergotron LX (~£120)
The standard recommendation, deservedly. Gas-spring mechanism, 9 kg weight capacity, excellent cable channels, and build quality that lasts indefinitely. Compatible with any VESA 75x75 or 100x100 monitor.
The LX adjusts height, tilt, pan, and rotation. Setting up takes 15 minutes and requires no tools. Once set, it holds position without drift.
Best Budget: NB North Bayou F80 (~£35)
Significantly cheaper than the Ergotron LX, and it works. The spring mechanism is less smooth and the build quality is obviously lower, but it holds position and provides the height adjustability that matters most.
For monitors under 6 kg, it is adequate. Do not use it for heavier or more expensive monitors.
Best for Heavy Monitors: Ergotron HX (~£180)
For ultrawides and large format displays (up to 19.1 kg), the HX is the right choice. Same quality as the LX with a heavier-duty gas spring. If you have a 34-inch or larger monitor, start here.
Best Dual Monitor: Ergotron LX Dual Stacked (~£200)
Two LX gas-spring arms on a single pole, allowing independent height adjustment for each monitor. The cleanest dual-monitor solution available.
Best for Standing Desks: Fully Jarvis Monitor Arm (~£90)
Specifically designed for standing desks, with a different cable management approach for desks that change height. Smooth, stable at all heights, and well priced.
Installation Tips
Tighten the base clamp firmly: An under-tightened clamp rotates under load. Apply significant force when tightening.
Calibrate the spring tension to your monitor weight: The gas spring has a tension adjustment under the arm joint. Adjust until the arm holds position with zero drift.
Route cables before positioning the monitor: It is significantly easier to thread cables through arm channels before the monitor is attached.
Sit in your chair before finalising position: Set the height, sit down, check the ergonomic position, then adjust. The correct height is the one that is right when you are seated and working.
Once you have used a monitor arm, going back to a fixed stand feels immediately limiting. It is one of those upgrades you wonder why you waited to make.
For more on building the complete ergonomic setup, see our desk setup guide.
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