Quick Answer: Office temperature varies vertically by several degrees between floor and ceiling, and overhead vents deliver their coldest, fastest air near head and shoulder height. A taller person sits with their neck and shoulders in that stream while a shorter colleague sits below it. Add a larger skin surface area losing heat and the same thermostat setting produces two genuinely different experiences. It is not sensitivity, it is stratification.

The room is not one temperature. You are sitting in a colder part of it.

What is actually happening in the room?

Cold air falls, the vents are above you, and a seated body is spread across a vertical temperature gradient.

Air stratifies by temperature. Warm air is less dense and rises; cool air is denser and sinks. In an air-conditioned office, the difference between floor level and ceiling level is routinely several degrees, and building standards treat excessive vertical differences as a comfort defect for exactly that reason.

Overhead diffusers deliver cold air downward and outward. The stream is coldest and fastest close to the outlet, mixing with room air as it travels. A seated head at a greater height sits closer to that stream and encounters it before it has fully mixed.

Draft is about velocity as well as temperature. Moving air removes heat far faster than still air at the same temperature — the same reason wind chill exists. A gentle stream over the back of the neck removes more heat than a cold still room does, and it is felt most on exposed skin.

The body side of it:

A larger surface area loses more heat in absolute terms. The same room, the same clothing, more area radiating and convecting.

Long limbs are efficient radiators, which is an advantage in heat and a disadvantage in a cold office.

Peripheral cooling is the first symptom. Hands and feet are furthest from the core and have the highest surface-to-volume ratio. Cold hands at a keyboard are usually the first sign and they directly affect dexterity and comfort.

Sitting still produces almost no heat. Desk work is close to resting metabolism, so there is very little internal heat to offset the losses.

What can you actually change?

Air movement first, then insulation, then position.

Deal with the draft rather than the temperature. A vent deflector — a simple clip-on device that redirects airflow away from a desk — solves more of this problem than any thermostat argument. They are inexpensive and facilities teams often have them.

Move your chair out of the stream if you can. Even half a metre laterally can take you out of the direct path of a diffuser. Stand up and feel for the stream with a hand at head height to find where it lands.

Cover the neck and shoulders. The back of the neck is a high-blood-flow area and the primary site of draft discomfort. A scarf or a collared layer does far more than a thicker jumper, because it targets the exposed area.

Insulate the extremities. Warm socks and closed shoes make a much larger difference than a warmer top, because feet are at floor level where the coldest air pools. Cold feet drive whole-body cold sensation, and they are the most commonly ignored fix.

Wrist warmers or fingerless gloves are unfashionable and extremely effective for cold hands at a keyboard.

Move every 45 minutes. Any movement generates heat, and a short walk resets peripheral circulation. This is also the fix for every other desk problem, which makes it easy to justify.

Drink something warm. Modest effect on core temperature, real effect on comfort.

Raise the issue as airflow, not temperature. Facilities teams can often redirect or rebalance a diffuser, and that is a far more tractable request than changing a building setpoint that affects a whole floor.

Myth vs Fact: Office Temperature

Myth: The office is one temperature. Fact: Vertical stratification of several degrees is normal, and horizontal variation near vents, windows, and equipment adds more. Two desks in the same room genuinely differ.

Myth: Feeling cold at a desk means you are underdressed. Fact: Air movement matters as much as air temperature. A draft at 23°C can feel colder than still air at 20°C, and a thicker jumper does not address a stream on the neck.

Myth: Standing desks solve it. Fact: Standing raises your head further into the warm layer and your body generates more heat, so it often helps. It also puts your head closer to an overhead vent, which can make the draft worse. It depends entirely on where you sit relative to the diffuser.

Myth: Being cold is just uncomfortable. Fact: Cold hands reduce fine motor performance and grip, and cold muscles are stiffer. There is a measurable effect on typing comfort and on neck and shoulder tension, which is why people hunch in cold offices.

Myth: You will acclimatise. Fact: Adaptation to cold is limited and slow compared with heat acclimatisation, and it does not remove the effect of a draft on exposed skin.

Myth: It is just a personal preference thing. Fact: Thermal comfort models depend on metabolic rate, clothing, air speed, and radiant temperature. Body size and where you sit change the inputs, so different results from the same room are expected rather than a matter of taste.

Why is this worse right now, at the end of summer?

Because cooling systems run hardest when outdoor temperatures peak, and the contrast with outdoors is greatest.

Late August is when air conditioning runs at maximum output in most of the country, which means the highest airflow velocities and the coldest supply air of the year.

The indoor-outdoor contrast is at its largest. Arriving from 32°C outside into 21°C inside produces a genuine thermal shock, and the body’s cooling responses from the commute — dilated skin vessels, active sweating — persist for a while after you sit down. That is why the first thirty minutes at the desk feel coldest.

Summer clothing offers the least insulation of the year, and it was chosen for the commute rather than the office.

Damp clothing from a hot commute is a strong evaporative cooler, and it keeps working in an air-conditioned room where you no longer want it to.

What helps specifically for the remaining weeks of the season:

Keep a proper layer at the desk permanently rather than carrying one back and forth. A cardigan that lives on the back of the chair is the single most practical intervention.

Bring a spare top if your commute is hot enough to sweat through one. Sitting in a damp shirt under a vent is the specific mechanism behind the end-of-summer office chill.

Wear closed shoes at the desk, whatever the outdoor temperature. Feet at floor level in the coolest air, uncovered, is the fastest route to feeling cold all over.

Expect it to reverse quickly. Within weeks, cooling systems ease off and the same building becomes comfortable, then heated and dry. The dry air of heating season brings its own problems — static, dry eyes, and irritated airways — and the layer on the chair remains useful for a different reason.

FAQ: Office Air Conditioning Questions, Answered

Why am I cold when nobody else is?

Room air stratifies vertically, so your head and shoulders sit in cooler, faster-moving air than a shorter colleague’s. A larger surface area loses more heat, and your desk may sit directly under a diffuser.

What is the most effective single fix?

Redirecting the airflow with a vent deflector, if your desk sits under a diffuser. Removing the draft solves the problem more completely than adding layers does.

Why do warm socks help more than a jumper?

Because the coldest air pools at floor level, and feet have a high surface-to-volume ratio. Cold feet drive the sensation of being cold everywhere.

Is a standing desk warmer?

Usually, because standing generates more heat and lifts you into a warmer layer. If you sit directly beneath a vent, standing can put your head closer to the stream and make it worse.

TL;DR:

• Office air stratifies vertically, and overhead vents deliver their coldest, fastest air near head and shoulder height.
• A taller seated worker sits in that stream while shorter colleagues sit below it, and a larger surface area loses more heat.
• Fix the airflow first with a deflector or by moving, then cover the neck and the feet.
• Late August is peak cooling output and peak indoor-outdoor contrast, so it is the worst few weeks of the year.

Stand at your desk and hold a hand at head height. If you feel a stream, that is the whole problem.