Calibration - Most B.M.S systems come delivered with commercial grade temperature, humidity and pressure sensors. These devices are typically suitable for their purpose but require checking regularly. The temperature sensor in your workspace may read 21 degrees centigrade and control to this as designed, but if the sensor is out of calibration the temperature may actually be 23 or 25. The control scheme will not then detect the correct temperature and carry on controlling to the higher temperature.

Sensor location - The temperature sensor controlling the heating, ventilation and air conditioning equipment in your workspace may be located in a poor position. It may catch the sunlight in the morning,  it may be located near a heat generating photocopier. This will have a dramatic effect on the temperature control in your space. Sensors often need relocating to correct bad temperature and humidity control.

Filters - All air conditioning systems come with at least one level of air filtration. These filters need to be changed at sensible intervals. Often this does not happen resulting in reduced airflow which causes stale air in the work space. A well maintained B.M.S system should have sensors on these filters to bring this to people's attention.

Dampers - Ventilation schemes usually have automatic air dampers. These have the ability to use the outside air for free cooling and fresh air supply. These should be able to operate over their full range but limited to never allow less than the minimum amount of fresh air into the workspace at all times. These should be checked very regularly to see that this is the case.

Drafts - Room sensors are typically connected to cables which arrive at the sensor by means of an electrical conduit of some type. Sometimes this conduit delivers a draft up the back of the sensor which causes it to read the temperature in the draft air rather than in the workspace air resulting in poor temperature control. This can easily be rectified by blocking the space around the cable in the conduit.

Compensation - If a buildings main source of heating is radiators then a very effective control method is outside weather compensation. This senses the outside weather temperature and decides what temperature the radiators should be heated to for those conditions. In a lot of small commercial buildings this can be a very cost effective method of temperature control.

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