Commercial HVAC System : 4 Signs To Look Out For Repair

Commercial HVAC System : 4 Signs To Look Out For Repair

The HVAC (heating, ventilation, and air conditioning ) system is one of the essential systems a building or a facility must have available. It is vital to look out for potential repairs that the system needs to avoid downtime and keep the flow of the commercial space running smoothly.

Moreover, suppose those issues are not given immediate attention. In that case, they are more likely to create a bigger problem in the system, leading to more expenses and a reasonable amount of time wasted. That said, let us be proactive and look into the signs of an HVAC system that may need professional inspection and repairs.

1. Leakage coming from the unit

Leakage can be caused by several problems in your centralised unit, which is why if you start to see a good amount of leaks in the system, it is best to have it checked up. In most cases, the leakage is usually a result of the refrigerant not being in optimum condition or moisture build-up in the system itself. As such, both are evidence of the system malfunctioning and may need repairs. 

If not taken immediate action, the leaking can be a potential risk to the workplace. It can cause molds in the area and even be a hazard for other assets — most machinery and automation do not mix well with water.

2. Unusual noises coming from the system

If the system is making strange noises such as buzzing, grinding, or clicking, it can signify that something is wrong. For instance, there may be issues with the air handler, or worn-down bearings may cause the motor not properly function.

Moreover, not only do the noises signal the dysfunctionality of the unit, but they can also disturb the workforce. That said, you must take immediate action to avoid any further problems and possible system shutdown, which ultimately leads to more avoidable expenses. 

3. Unpleasant odours from the vents

An unpleasant odour is always an indication of a problem — it can be a result of mold formation, leakage, and many issues that can lead to a more significant problem. For instance, refrigerants may have a strong chemical odour; they are hazardous and toxic when inhaled, posing a health threat to the workforce. Molds give off a musty scent and are also a health risk.

In some cases, small animals may even be trapped in the system, leading to a rotting smell in the space. Therefore, if you notice unpleasant odours coming from the vents, it is best to get professional help before it causes any more damage to the system and harm to the personnel.

4. Limited system performance

In cooling mode, the HVAC system cools down and dehumidifies the air inside the space. However, if the airflow and cooling flow from the system fails, the unit may have an underlying problem. So, it is advised to have it inspected by a professional before the system eventually shuts down.

If not taken immediate action, the rising humidity can promote the growth of molds, which would be a health risk. Moreover, a dysfunctional cooling system can make the workers uncomfortably warm, especially when there is plenty of machinery in the workplace.


Understanding and knowing the indicators of an HVAC problem saves you money on repairs and free you and your building's tenants time and aggravation. As such, partner with a reputable energy management service in Singapore to help you eliminate those problems and avoid system downtime while being energy-efficient.

Our industrial energy management projects at KJFEM vary from HVAC (heating, ventilating, and air conditioning) systems to DCP (District Cooling Plants). We provide comprehensive energy-related services for all your industrial and manufacturing demands. We aim to give our clients the most cost-effective performance management by utilising a leading technology platform to harness energy properly.

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