What Causes Uneven Cooling in Open-Plan Offices?

We have all been there. You are sitting at your desk in a jumper while the person three metres away is practically fanning themselves with a clipboard. In a big open-plan office, getting the temperature right for everyone feels like a losing battle.

It is one of the most common complaints we hear at Coles. Usually, people assume the air con is just broken, but often, it is a design or maintenance issue that is easily fixed.

Here is why your office feels like four different climate zones at once.

1. The Zoning Is Not Quite Right

Most open-plan offices are split into zones controlled by different sensors. If your office was originally designed for 10 people but now holds 25, or if you have added partition walls that were not there before, the air is not flowing where it was meant to.

If the thermostat is tucked away in a quiet, cool corner, it thinks the whole office is fine. Meanwhile, the people sitting near the north-facing windows are roasting. We often find that a quick commercial air conditioning assessment can pinpoint where these sensors need to be moved to actually reflect the real temperature of the room.

2. Heat Loads: Computers, People, and Windows

Every person in a room is basically a 100-watt heater. Add in dual monitors, printers, and a server rack, and you have a massive amount of heat being generated in specific spots.

The biggest culprits are:

• Large Windows: Even with the best blinds, solar gain is real. Desks right against the glass will always be warmer than the middle of the floor.
• The Kitchen or Breakroom: If the office fridge and microwave are running constantly, that heat bleeds into the nearest workstations.
• Densely Packed Teams: If the sales team is all bunched together in one corner, that area will naturally be 2 or 3 degrees warmer than the half-empty accounting section.

3. Blocked or Poorly Aimed Vents

Sometimes the fix is incredibly simple. We have walked into offices where someone has taped cardboard over a vent because they were too cold. This forces more air out of other vents and creates a wind tunnel elsewhere.

Other times, office furniture is the problem. If a tall filing cabinet or a new partition is placed directly under or in front of a supply vent, the air cannot circulate. It hits the obstacle and drops straight down, leaving the rest of the room stagnant.

4. Dirty Filters and Lack of Maintenance

When was the last time the filters were pulled out and cleaned? When filters get clogged with dust, the fan must work twice as hard to push air through. This leads to short cycling, where the unit turns on and off constantly but never stays on long enough to distribute the cool air to the far corners of the room.

Regular air conditioning services are not just about preventing breakdowns. They are about making sure the system is balanced so the air reaches the people down the back of the office.

How to Fix the Office Thermostat Wars

Before you start an email chain about the temperature, try these three things:

1. Check the Vents: Make sure nobody has closed them or blocked them with tall furniture.
2. Move the Thermostat: If it is right under a vent or in the direct sun, it is giving a false reading.
3. Balance the Airflow: A technician can adjust the dampers in your ductwork to send more air to the hot spots and less to the areas that are always freezing.

Tired of the office being half-fridge and half-sauna?

If your team is constantly complaining about the heat or the cold, it is probably time for a professional look at your setup. We have been helping Newcastle businesses stay comfortable since 1939.

Contact our team today to get your office air con balanced and working properly.