Maintaining comfortable temperatures while minimising energy consumption requires heating and cooling systems to work together effectively. One important part of achieving this is something known as a deadband.

In simple terms, a deadband is a range of temperatures where neither heating nor cooling is required. Rather than attempting to maintain one exact temperature at all times, the BEMS allows conditions to move within an acceptable range before calling for heating or cooling.

For example, a control strategy could allow the temperature to fluctuate within a comfortable range before taking action. Heating would only be introduced when the temperature falls below the lower threshold, while cooling would only begin when it rises above the upper threshold.

Without an appropriate deadband, heating and cooling systems can end up working against each other. One system may attempt to warm a space while another tries to cool it, resulting in unnecessary energy consumption and additional demand on building plant.

Correctly configured deadbands therefore help create a balance between occupant comfort and energy efficiency. The appropriate settings will depend on factors including the type of building, how spaces are used and the comfort requirements of occupants.

Deadbands should also be reviewed as part of the wider BEMS control strategy. Changes to setpoints, building use or equipment can affect how heating and cooling interact, making ongoing optimisation important.

At Concord, our engineers review control strategies, setpoints and system performance to help ensure heating and cooling operate together efficiently. Small adjustments to the way a BEMS controls a building can help reduce unnecessary energy use while continuing to maintain comfortable conditions for occupants.

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