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Contactez-nous This Oltaven fresh air / fresh air conditioning odor removal filter is a composite air filter that combines a polypropylene (PP) media layer for fine particle capture with a modified…
FILTER MEDIA / ROLLS · SHEETS · DIE-CUT
This Oltaven fresh air / fresh air conditioning odor removal filter is a composite air filter that combines a polypropylene (PP) media layer for fine particle capture with a modified activated carbon layer for odor and gas removal. It filters PM2.5, pollen, formaldehyde, TVOC and other odorous gases, and is designed for residential wall-mounted fresh air units, cabinet fresh air conditioners, and residential or commercial central fresh air systems (HVAC). Oltaven supplies the finished filter, built to your device’s dimensions and performance targets through OEM/ODM manufacturing.
Media selection sets the upper limit of what a filter can do. The PP composite media used here is chosen for consistent fine-particle capture, and the high-iodine-value activated carbon layer provides the adsorption capacity for formaldehyde and TVOC. But the finished filter’s efficiency, resistance and dust-holding capacity are decided by how those materials are formed: pleat geometry, frame design and sealing all change the airflow path. A tighter pleat pack increases media area and lowers face velocity, which can improve efficiency and reduce resistance, but it also affects how evenly air passes through the carbon layer. The forming step is where Oltaven’s engineering team balances these trade-offs, so the delivered filter meets the device’s airflow and pressure budget rather than only the media datasheet.
Three forming decisions drive the finished filter’s behaviour. First, pleating: the number of pleats and the pleat depth determine media area, which in turn influences face velocity, pressure drop and dust-holding capacity. Second, framing: the frame must hold the pleat pack flat and square so air does not bypass the media; Oltaven offers flat, V-shaped folded and composite formats to match the installation space. Third, the carbon layer: the amount and distribution of activated carbon affect both odor removal capacity and resistance, so it is specified per application. In practice, filters that look identical in size can differ in resistance and life because of these forming choices. Oltaven tests each finished design for airflow resistance and filtration efficiency before shipment, and the production system is certified to ISO 9001 and IATF 16949.
Dust removal efficiency is available across F7, F8 and F9 (medium efficiency) to H11, H12 and H13 (HEPA) grades. The carbon layer is selected with high iodine value to support deep adsorption of formaldehyde, TVOC and other odors, so the filter delivers dual function: particle removal plus odor control. Because the filter is built to order, the pleat count, frame type and carbon loading can be adjusted to match the device’s fan curve and the target replacement interval.
This filter is used in residential wall-mounted fresh air machines, cabinet-style fresh air conditioners, and central fresh air systems for homes and commercial buildings. It fits where both fine dust and odors need to be addressed in one stage, such as fresh air intake or return-air filtration in HVAC systems. The composite format is also suitable for new-air purifiers that require a compact filter with combined particle and gas removal. Oltaven supplies the finished filter, not only the media, so the frame, seals and pleat pack are delivered as one tested component ready for installation.
| Item | Detail |
|---|---|
| Product name | Fresh Air System / Air Conditioner Composite Filter |
| Core filtration materials | Composite PP (polypropylene) filter paper + modified odor-removal activated carbon |
| Particle filtration efficiency | Covers F7 / F8 / F9 (medium efficiency) to H11 / H12 / H13 (HEPA) grades |
| Core performance | Dual function: removal of fine particulate matter (PM2.5, pollen) + deep adsorption of formaldehyde, TVOC and other odors |
| Product application categories | Fresh air system odor removal filter, fresh air air-conditioner high-efficiency filter, fresh air machine HEPA composite filter |
| Main application scenarios | Residential wall-mounted fresh air machines, cabinet-style fresh air air conditioners, residential and commercial central fresh air systems (HVAC) |
| Custom sizes and formats | Tooling and production fully according to customer’s complete-unit requirements (flat, V-shaped folded and composite custom formats supported) |
| Quality and certification | Strict airflow resistance and purification efficiency tests before shipment; production conforms to ISO 9001 quality management system and IATF 16949 international certification; materials are environmentally safe |
Oltaven supports OEM/ODM projects and has developed more than 1,000 filtration solutions over 20 years of research and manufacturing experience. The production base covers 50,000 m², including six cleanrooms with a combined area of 20,000 m². A self-built laboratory is accredited by CNAS (China National Accreditation Service for Conformity Assessment) and can issue test reports for filtration efficiency, dust-holding capacity and resistance. The factory holds IATF 16949 automotive quality management system certification (obtained in 2024) and ISO 9001, ISO 14001 and ISO 45001 system certifications. Products comply with REACH and RoHS environmental regulations, and compliance documents are available. The address is Zhongshan, Guangdong, China.
To start a custom filter project, please provide your device or vehicle model, the required size or a drawing, the airflow or water flow, the operating conditions, and the quantity you expect. This information lets Oltaven match the media, pleat and frame to your unit and give an accurate quotation. Contact Oltaven to discuss your fresh air filter requirements.
The filter combines composite PP media for fine particle capture with a modified activated carbon layer for odor adsorption. Particle filtration efficiency covers F7 to F9 (medium efficiency) and H11 to H13 (HEPA) grades, while the high-iodine-value carbon targets formaldehyde, TVOC and other odorous gases. The forming of pleats, frame and carbon layer is balanced so the finished filter meets the device’s airflow and resistance targets.
Resistance depends on how the media is formed, not only on the media itself. Pleat count and depth change the media area and face velocity, frame design affects air bypass, and the amount and distribution of activated carbon add to pressure drop. Oltaven adjusts these forming parameters during OEM/ODM development so the finished filter fits your unit’s fan curve.
Yes. Oltaven offers full OEM/ODM customisation for dimensions, structure, filtration grade, frame format (including flat, V-shaped folded and composite), logo and packaging. Provide your device model, size or drawing, airflow and operating conditions, and the engineering team will propose a matching filter. Tooling is made according to the complete-unit requirements.
An OEM project starts with your device model, required size or drawing, airflow or water flow, operating conditions and estimated quantity. Oltaven reviews the application and recommends media grade, pleat format and carbon loading, then provides a proposal and quotation. Samples can be developed for evaluation before production.
Standard specifications typically have an MOQ of 500–1,000 pieces, while custom specifications generally have an MOQ of 1,000–2,000 pieces; sample orders can be handled flexibly. For lead time, regular stock items ship within 7–10 days, custom first orders take about 25–35 days including tooling and sample approval, and repeat orders take 15–25 days.
Under normal use (PM2.5 annual average around 35 μg/m³, 8–12 hours daily operation), a replacement interval of 6–12 months is recommended. Actual life depends on local air quality, usage frequency and pollutant concentration. Oltaven can adjust dust-holding capacity and carbon iodine value to optimise life and cost for your region.
Yes, samples are available for evaluation. Standard specification samples can be provided free of charge with the customer covering international courier costs. Custom samples may incur a sample fee depending on tooling complexity, which can be refunded after a bulk order. Test reports from the CNAS-accredited laboratory can also be provided.
Oltaven follows IQC, IPQC and OQC quality control throughout production, and finished filters are tested for airflow resistance and purification efficiency before shipment. The production system is certified to ISO 9001 and IATF 16949, and the CNAS-accredited laboratory can issue test reports for efficiency, dust-holding capacity and resistance. Contact Oltaven with your requirements to discuss a supply plan.