FAN-COIL Filter
FAN-COIL Filter is a slim synthetic-fiber air filter used to capture coarse dust, fibers, lint and similar large particles from the return air entering fan-coil units.
Low Installation Depth, Durable Structure and Practical Maintenance
The synthetic-fiber filter media is manufactured with a galvanized frame and double-sided expanded-metal support. Therefore, its slim panel construction allows easy installation in the limited filter compartments of fan-coil units.
According to ISO 16890, the filters are classified within the ISO Coarse group. In addition, they can be manufactured for project-specific requirements with different efficiency classes, widths, heights and media thicknesses.
ISO Coarse
Helps capture coarse particles from fan-coil return air.
Synthetic Fiber
Lightweight and uniform synthetic filter media suitable for coarse filtration is used.
6–10 mm Depth
Slim panel options are suitable for fan-coil units with limited filter space.
Galvanized Frame
Provides a robust structure with double-sided expanded-metal support.
What Is a FAN-COIL Filter?
A FAN-COIL Filter is a prefilter used to limit coarse dust carried with room air from reaching the coil, fan blades, drain pan and internal surfaces of a fan-coil unit.
The filter media is installed inside a galvanized frame and supported on both sides by expanded metal mesh. As a result, the structure helps the filter maintain its shape under airflow and allows secure installation in the fan-coil filter compartment.
Furthermore, the low panel thickness makes it possible to manufacture custom dimensions for ceiling, cassette, floor-mounted and ducted fan-coil units with different filter compartments.
How Does a FAN-COIL Filter Work?
Return Air Is Drawn In
Room air reaches the filter section of the fan-coil unit due to the suction generated by the fan.
Coarse Particles Are Captured
Large particles such as dust, fibers and lint are captured by the synthetic-fiber filter media.
Equipment Is Protected
Filtered air reaches the coil and fan, helping limit contamination inside the unit.
Filter Maintenance Is Performed
When dirty, the filter is cleaned or replaced according to the applicable maintenance procedure.
Filtration Class Options
Basic coarse-filtration option approximately corresponding to G2 in the withdrawn EN 779 classification.
Reference depth: 6 mm
Standard coarse-filtration option approximately corresponding to G3 in the withdrawn EN 779 classification.
Reference depth: 8 mm
Higher coarse-filtration option approximately corresponding to G4 in the withdrawn EN 779 classification.
Reference depth: 10 mm
FAN-COIL Filter Technical Specifications
| Technical Parameter | Reference Value | Description |
|---|---|---|
| Filter standard | ISO 16890 | Used for coarse-particle air-filter classification. |
| Filter class | ISO Coarse | ISO Coarse 25%, 45% and 55% options can be supplied. |
| Historical class references | G2, G3 and G4 | EN 779 classes are stated for comparison purposes only. |
| Filter media | Synthetic fiber | Suitable for capturing coarse particles from fan-coil return air. |
| Frame | Galvanized metal | Provides a slim, robust and dimensionally stable panel structure. |
| Media support | Double-sided expanded metal | Helps the filter media maintain its form under airflow. |
| Standard depths | 6, 8 and 10 mm | Selected according to filtration class and equipment filter housing. |
| Reference air velocity | 2 m/s | Pressure-drop values are evaluated at this reference face velocity. |
| Maximum operating temperature | 80°C | Final temperature resistance should be verified according to product construction and process conditions. |
| Manufacturing dimensions | Standard and custom sizes | Can be manufactured according to the clear internal dimensions of the fan-coil filter housing. |
| Recommended final pressure drop | Initial ΔP + 50 Pa or initial ΔP × 3 | The lower of the two values may be used as the replacement limit. |
Technical characteristics may vary according to product dimensions, filter class, face velocity, frame construction and process conditions.
Reference Performance Values
| ISO 16890 Class | Historical Class Reference | Depth | Reference Air Velocity | Initial Pressure Drop |
|---|---|---|---|---|
| ISO Coarse 25% | G2 | 6 mm | 2 m/s | Approx. 20 Pa |
| ISO Coarse 45% | G3 | 8 mm | 2 m/s | Approx. 45 Pa |
| ISO Coarse 55% | G4 | 10 mm | 2 m/s | Approx. 60 Pa |
Pressure-drop values are for reference purposes. Actual values may vary according to filter dimensions, face velocity, media construction, manufacturing tolerances and test method.
Reference Dimension Options
FAN-COIL Filter Application Areas
Advantages of the FAN-COIL Filter
FAN-COIL Filter Selection Criteria
Installation and Maintenance Recommendations
Technical Selection and Application Note
FAN-COIL Filters are intended for coarse-particle filtration. Therefore, they are not sufficient by themselves for applications requiring fine-particle, microorganism, gas, odor or chemical-vapor filtration.
Selecting a higher filtration class may reduce fan-coil airflow and increase the sound level of the unit. Consequently, fan capacity and available static pressure should be checked before changing the filter class.
Filter life and actual pressure drop depend on face velocity, room dust load, operating period, installation sealing, maintenance frequency and process conditions.
For further reference on general ventilation air-filter classification, see the official ISO 16890-1 standard page.
Get Technical Support for FAN-COIL Filter
Filter selection should consider the fan-coil filter housing, airflow, face velocity, required ISO Coarse class, initial pressure drop and maintenance conditions.
Contact Airtes for technical support in selecting and supplying standard or custom-size FAN-COIL Filters.
