Filters in AHUs and FCUs serve several key functions:
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Improve Indoor Air Quality (IAQ) by trapping dust, pollen, mold spores, and bacteria
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Protect HVAC components like coils and fans from dirt buildup
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Enhance energy efficiency by maintaining proper airflow
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Extend equipment lifespan through reduced wear and tear
Recommended Filter Replacement Frequency
The frequency of filter changes depends on the filter type, environment, and usage intensity:
| Filter Type | Replacement Frequency (Typical) |
|---|---|
| Panel Filters | Every 1–2 months |
| Pleated Filters | Every 2–3 months |
| Bag Filters | Every 6–12 months (depending on load) |
| HEPA Filters | Every 12–24 months (or based on pressure drop) |
| Carbon Filters | Every 3–6 months |
Tip: Use a differential pressure gauge to monitor filter loading. When the pressure drop doubles from its initial value, it’s time to replace the filter.
If you’re managing a facility or planning maintenance schedules, KCK-SS can help you build a filter replacement log or even optimize your HVAC system for energy savings. Want to go deeper into MERV ratings or filter selection for specific environments. Contact us!
Inquiry - AHU and FCU Filter