Why Your Building’s HVAC Is Noisy (And What to Do About It)

For businesses, a properly functioning HVAC system isn’t just about comfort—it’s critical for day-to-day operations too. A noisy HVAC can be more than a minor annoyance; it can signify underlying issues needing immediate attention.

In this post, we discuss common reasons behind a noisy commercial HVAC system and strategies to resolve this issue.

Common Culprits Behind HVAC Noises

Age: An HVAC system often becomes louder with time. Components wear down or become loose, leading to rattling or other disconcerting sounds. If your unit has been with you for more than a decade, it might be time to upgrade to a new, more efficient system.

Broken Compressor or Components: The compressor, typically located outside, plays a pivotal role in regulating refrigerant and maintaining indoor temperature. Strange sounds from this component may suggest mechanical troubles or refrigerant pressure issues. Essential components like the fan blades can also become imbalanced, causing vibrations and excessive noise.

Ductwork and Attic Insulation Issues: Ductwork facilitates air distribution from the HVAC system throughout the building. Noises like hissing or whistling often point toward leaks or obstructed airflow, compromising efficiency and increasing operating costs. In residential homes, adequate attic insulation is also crucial as it helps enhance the overall efficiency of heating and cooling systems.

Addressing a Noisy HVAC

Considering a VRF System: Variable refrigerant flow (VRF) systems offer a solution for buildings seeking quiet operation and energy efficiency. These systems provide precise control by circulating only the necessary refrigerant at any given time, operating at quieter levels than traditional systems.

Performing Maintenance Checks: Regular maintenance is critical to ensure HVAC components are in good working order and to prevent noise issues before they escalate. This includes inspecting filters, belts, and other moving parts that require lubrication or adjustment.

Tackling Ductwork Problems: For hissing and whistling noises stemming from ductwork, prompt repair and sealing of leaks are recommended. This not only reduces noise but also minimizes energy waste. Investing in duct testing services can help identify specific problem areas that need attention.

Implementing Sound Reduction Strategies: If the location of your HVAC system exacerbates noise problems, sound-dampening materials can be an effective solution. Additionally, for outdoor units, consider landscaping barriers such as shrubs or trees to provide natural sound insulation.

If you’re experiencing HVAC noise, reach out to EZ Air Conditioning and Heating. We specialize in addressing various commercial HVAC concerns, from repairing common issues to installing VRF systems. Call us at (210) 429-9186 or complete our online form to book a service appointment.