You rely on your commercial heating and air conditioning system to keep the work environment comfortable and safe for employees without putting your budget in the red. Staying on top of preventive maintenance tasks is key to ensuring the reliable, efficient operation of your system. However, even well-maintained systems require attention from time to time. What causes these unexpected issues?

Clogged Filters

Dirty, clogged filters are a common – and easily preventable – reason for commercial HVAC repair and service calls. Before picking up the phone for help, check your systems’ air filter. Dirty filters force your system to work harder, putting it under stress and decreasing performance and lifespan. Monitor filters frequently and change them at least quarterly for optimal efficiency. This will also improve the indoor air quality in your building, trapping dust, pollen, allergens, and other pollutants that can negatively impact your staff and productivity.

Dirty Condenser/Coils
As with clogged filters, a dirty, clogged condenser or coil can significantly impact HVAC performance.

Leaking Refrigerant

Your system relies on liquid refrigerant contained with the coils of the HVAC system to cool, heat, and dehumidify the air in your workspace. If the system doesn’t contain enough refrigerant, it can’t perform this task as well and the air it produces will not be very cold/warm. This not only makes workers and patrons uncomfortable, but forces your condenser to work harder leading to more (and increasingly costly) repair needs.

Thermostat Malfunction

This issue is commonly overlooked when a system goes down. It is often assumed the issue is with the mechanical components of the system, when it’s actually a problem with the thermostat. As this small piece of equipment regulates the timing of heated or cooled air produced by your unit, when it’s malfunctioning, you could struggle with intermittent temperature fluctuations that make workers and customers uncomfortable. The best commercial HVAC mechanical contractors in Philadelphia can quickly identify this issue, even in workspaces with multiple thermostats.

Improper Airflow

Conditioned air is distributed through ductwork and vent registers before it reaches each room, section, or zone of your business. Dampers are used to alter the flow, reducing airflow in one area to deliver additional flow to another area. When these dampers are not properly set up, it can cause an imbalance where one room heats faster than the other.


We know you may not want to think about it, but all systems have a lifespan. Over time components fail and older systems utilizing soon-to-be banned coolant simply reach a point where they can no longer keep the pace.

Neglected Maintenance

Routine regular maintenance helps you identify minor issues before they become major repairs or result in system failure. If you and your staff have a hard time keeping up with these needs, enlisting in a preventive maintenance plan is a wise investment.

System still down for the count? Stop fighting with your system and knockout repair issues fast with the help of knowledgeable commercial HVAC repair service professionals at H&H Commercial Services today.