Description
Product Overview
ORO Pre Filters (G1–G4) are coarse air filtration solutions designed for first-stage filtration in HVAC systems, Air Handling Units (AHUs), and industrial ventilation applications. These filters capture large airborne particles such as dust, lint, fibers, and pollen, preventing premature loading of fine and HEPA filters.
By acting as the first line of defense, ORO G1–G4 pre filters help improve indoor air quality, reduce system maintenance, enhance energy efficiency, and extend the overall life of HVAC equipment.
Key Features of ORO G1–G4 Pre Filters
- High dust holding capacity for longer service intervals
- Low initial pressure drop for efficient airflow
- Washable and reusable options available (based on media type)
- Durable construction for continuous HVAC operation
- Stable filtration performance across rated airflow
- Suitable for commercial and industrial environments
Applications
ORO Pre Filters (G1–G4) are widely used in:
- HVAC air filtration systems
- Air Handling Units (AHUs)
- Commercial buildings and offices
- Industrial ventilation systems
- Manufacturing plants and warehouses
- Shopping malls and public facilities
- Mechanical rooms and utility areas
Technical Specifications
- Filter Classification: G1, G2, G3, G4
- Filtration Type: Coarse air filter / Pre filter
- Filter Media: Synthetic / Non-woven
- Frame Material: GI / Aluminium / Stainless Steel
- Standard Sizes: As per HVAC & AHU norms
- Custom Sizes: Available on request
- Typical Airflow Range: Designed as per application
Why Use G1–G4 Pre Filters in HVAC Systems?
Using G1–G4 pre filters as the first filtration stage helps:
- Protect fine filters and HEPA filters
- Reduce HVAC maintenance frequency
- Improve indoor air quality
- Lower operating and energy costs
- Increase lifespan of fans, coils, and downstream equipment
Custom Pre Filter Solutions by ORO
ORO offers custom-built G1–G4 pre filters based on airflow, size, frame material, and application requirements. Whether for commercial HVAC or heavy-duty industrial ventilation, ORO pre filters are engineered for reliability, performance, and long service life.
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Frequently Asked Questions (FAQs)
What are G1–G4 pre filters used for?
G1–G4 pre filters are used as first-stage coarse air filters in HVAC and AHU systems to remove large dust particles before fine filtration
Where are G1–G4 pre filters installed?
They are installed in HVAC systems, AHUs, industrial ventilation units, and commercial buildings as the primary filtration stage.
What is the difference between G1, G2, G3, and G4 filters?
The difference is in filtration efficiency and dust holding capacity, with G4 offering the highest efficiency among coarse filters.
Are ORO pre filters washable?
Yes, washable and reusable pre filter options are available depending on the filter media and application.
Do pre filters reduce pressure drop in HVAC systems?
Yes, ORO G1–G4 pre filters are designed with a low initial pressure drop, helping maintain airflow efficiency.
Can ORO supply custom-size pre filters?
Yes, ORO manufactures custom-size G1–G4 pre filters to match AHU dimensions and airflow requirements.
Why are pre filters important in HVAC and AHU systems?
Pre filters protect downstream filters, improve air quality, reduce maintenance costs, and extend HVAC system life.
