How Can Large Factories Reduce HVAC Energy Consumption with the Right Filter Configuration? A Practical Guide to Selecting MAU Filters
In large-scale facilities such as semiconductor fabs, biopharmaceutical plants, and medical centers, the MAU (Make-Up Air Unit) is an essential part of the HVAC system. Its core function is to bring in fresh outdoor air, filter it through multiple stages, and deliver it indoors to maintain cleanliness levels and positive-pressure environments. The choice of filters directly affects airflow efficiency, energy consumption, equipment lifespan, and Indoor Air Quality (IAQ).
Hencolin provides a complete range of primary, medium, and high-efficiency filters specifically designed for MAU applications, helping enterprises reduce energy consumption, extend equipment life, and comply with international standards such as EN779, EN1822, and ASHRAE 52.2.
Why Do MAU-Specific Filters Impact Energy Efficiency?
• Airflow resistance is directly linked to energy use:
High-quality filters maintain low initial resistance and a slow-rising pressure drop curve, preventing the fan from consuming excess energy to overcome airflow resistance.
• Stable filter media extends replacement cycles:
Premium filter materials provide long-lasting performance, reducing the frequency of filter changes and maintenance.
• Multi-stage filtration distributes the load:
Primary and medium filters protect the HEPA stage, significantly extending its service life and lowering annual filter costs and carbon emissions.
Recommended Filter Configuration
| Filter Type | Recommended Rating | Function | Suggested Application |
|---|---|---|---|
| Primary Filter | MERV 8–10 | Blocks coarse dust, hair, and large particles | First-stage outdoor air intake |
| Medium Filter | MERV 11–14 | Captures suspended particulates and PM2.5 | Main filtration stage inside MAU |
| High-Efficiency Filter | HEPA H13–H14 | Removes viruses, bacteria, and micron-sized particles | Clean zones or terminal supply |
Suitable Applications
- Pharmaceutical plants (GMP processes)
- Hospital central HVAC systems
- Semiconductor cleanrooms
- Biotechnology labs and food processing facilities
Top 3 Frequently Asked Questions
Q1: Can Hencolin filters help us reduce electricity costs?
Yes. Our filters are engineered with low pressure drop and high dust-holding capacity, reducing fan load and energy usage—resulting in significant long-term energy savings for large facilities.
Q2: What is the filter lifespan? Do they come with certifications?
Depending on filter type and environment: primary filters last 2–3 months, medium filters 4–6 months, and HEPA filters up to 12 months. All products comply with UL 900 fire safety and performance standards including EN779, EN1822, and ASHRAE 52.2.
Q3: Do you support bulk orders? Is the lead time reliable?
Hencolin operates automated production lines and an 8,000 m² facility, supporting OEM/ODM and large-volume shipments. Lead times are stable, and all products include traceability codes—ideal for annual procurement and quality control in large organizations.
