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Product Introduction
In the high-performance air purification market, the trend is moving toward "Total Air Quality" solutions that address multiple threats in a single pass. Our Combination Air Filters represent the pinnacle of this multi-functional approach. At Nantong Lyusen, we specialize in the engineering of composite filter modules that integrate distinct filtration technologies—such as HEPA particle capture, Activated Carbon gas adsorption, and Silver-Ion antimicrobial protection—into a single, high-efficiency cartridge. This "All-in-One" design is critical for compact modern air purifiers, high-end automotive cabins, and specialized medical equipment where space is at a premium but performance cannot be compromised. By manufacturing each layer in our own facility in Nantong, we are able to bond these diverse materials using low-resistance ultrasonic welding or high-purity hot-melt adhesives, ensuring a seamless and efficient transition from one filtration stage to the next.
What makes Lyusen’s combination filters superior is our focus on "Synergistic Efficiency Optimization." It is not enough to simply stack two filters together; doing so often leads to excessive air resistance and reduced fan life. We use advanced computer modeling to optimize the "Air-Flow Resistance Cascade," ensuring that the pre-filter, the carbon layer, and the HEPA media are balanced to provide the highest possible CADR (Clean Air Delivery Rate) with the lowest possible noise. For international OEM partners, this "Plug-and-Play" solution significantly simplifies the supply chain and reduces the labor costs associated with assembling multiple filters. As a factory with 26 years of industrial experience and a high-tech certification since 2020, Nantong Lyusen provides the technical expertise and manufacturing scale needed to build world-class, multi-functional air purification products that meet the highest standards of safety and performance in the global market.
Detailed Technical Specifications
To assist product designers and procurement managers, Nantong Lyusen provides a comprehensive technical data suite for our combination filter series. We focus on the Cumulative Clean Mass (CCM) and the Filter-to-Frame Airflow Efficiency, ensuring that the composite structure doesn't cause unnecessary pressure drop. We also provide detailed test reports showing the reduction of both particulates (0.3μm) and gaseous pollutants (Formaldehyde/TVOC) in a single test cycle. Below is a data matrix for our most common 3-in-1 and 2-in-1 combination configurations, designed to help you select the optimal performance profile for your specific device.
| Configuration Type | Filtration Layers | Particle Efficiency | Gas Adsorption | Initial Resistance |
|---|---|---|---|---|
| 3-in-1 Professional | Pre-filter + H13 + Carbon | 99.97% @ 0.3μm | HCHO Removal > 95% | < 80 Pa @ 1m/s |
| 2-in-1 Odor Control | F7 Medium + Impreg. Carbon | ePM2.5 > 80% | Odor / TVOC > 92% | < 50 Pa @ 1m/s |
| 2-in-1 Medical | H14 HEPA + Silver Ion Mesh | 99.995% @ 0.3μm | Sterilization > 99.9% | < 120 Pa @ 0.45m/s |
| "Fresh Air" Composite | G4 + Carbon + Photocatalyst | Coarse Dust Capture | Broad-Spectrum VOCs | < 40 Pa @ 2m/s |
| Automotive Dual-Mode | Activated Carbon Paper + HEPA | 95% @ 0.5μm | Fuel Exhaust / Smog | < 30 Pa @ 1m/s |
Beyond performance, we focus on the Structural Integrity of the Composite Bond. We utilize high-precision laminating equipment that applies a microscopic layer of adhesive between the HEPA media and the carbon foam/honeycomb, ensuring that there is no "dead surface" where air cannot pass. Our frames can be customized using ABS plastic, aluminum, or moisture-resistant cardboard, and we offer a variety of sealants (including UL-compliant silicones) to ensure a 100% leak-proof unit. For the international market, all our combination filters are RoHS and REACH compliant, and we provide "Airborne Particle and Gas Decay" reports according to the AHAM and GB/T standards. Whether you need a standard cylindrical filter for a portable purifier or a large-format V-bank combination unit for a commercial AHU, Nantong Lyusen’s technical specifications provide the data-driven foundation for your brand's superior air purification performance.
Primary Industrial Applications
Combination Air Filters are the heart of the High-End Residential Air Purifier market. Consumers today expect their purifiers to handle everything from smoke and kitchen odors to pet dander and viruses. Our 3-in-1 combination modules (Pre-filter + HEPA + Carbon) are the standard solution for these devices, providing a "Complete Protection" marketing claim that resonates with health-conscious families. By integrating these three stages into a single, easy-to-replace cartridge, appliance brands can also improve their after-sales "Filter Subscription" revenue models, as customers find it much simpler to replace one unit than to manage three separate filters. We serve some of the world's leading purifier brands, providing them with the high-volume production and consistent quality needed to lead in a competitive global marketplace.
In the Automotive and Luxury Transportation sectors, combination filters are increasingly used to provide a "Pristine Cabin Experience." Modern vehicle cabin filters are no longer just simple dust catchers; they are sophisticated composite units that remove PM2.5 soot, pollen, and the volatile organic compounds (VOCs) released by new interior materials. Our 2-in-1 automotive modules utilize high-activity carbon paper or carbon-loaded foams bonded to a high-efficiency synthetic layer, ensuring that drivers and passengers are protected from both urban smog and the exhaust of the cars around them. This is a critical selling point for premium vehicles in highly polluted urban markets like East Asia and Europe.
Furthermore, our combination filters are vital for Specialized Medical and Industrial equipment. This includes surgical smoke evacuators (which must capture both bio-aerosols and toxic laser fumes), mobile isolation pods, and high-performance digital printing enclosures (which capture both ink mists and VOC solvents). In these applications, the ability to have HEPA-level sterility and carbon-level chemical adsorption in a single compact module is essential for the equipment's portability and ease of maintenance. We also provide these filters for High-Tech Office Buildings and "Smart Homes," where they are integrated into the "Fresh Air Supply" units to ensure that all outdoor pollutants—both particulate and gaseous—are eliminated before the air enters the living space. From a sleek desktop purifier to a high-tech medical device, Nantong Lyusen’s combination filters provide the advanced, all-in-one solution needed for the next generation of air purification technology.
Core Technical Advantages
The primary advantage of Lyusen’s Combination Air Filters is the Elimination of Supply Chain Complexity and Assembly Labor. When you buy separate filters, you have to manage multiple suppliers, multiple lead times, and multiple inventories. Furthermore, your own production staff has to manually layer or install these filters into your housing, increasing the risk of "Air Bypass" and damaged media. Our "All-in-One" modules arrive at your factory ready for immediate installation. By providing a "Drop-In" Solution, we help our OEM partners significantly reduce their internal manufacturing costs and simplify their quality control processes, as only one unit needs to be inspected and tested.
Another major technical benefit is our Low-Resistance Bonding Technology. A common problem with combination filters is that the adhesive used to stick the HEPA to the carbon can "blind" the filter surface, leading to a much higher pressure drop than the two filters would have separately. At Nantong Lyusen, we use specialized Point-Matrix Hot-Melt or Ultrasonic Patterning that only bonds the materials at specific contact points. This leaves over 95% of the filter surface open to airflow, ensuring that your purification system maintains a high CADR (Clean Air Delivery Rate) and a low noise profile. This technical precision is essential for winning high scores in third-party product reviews (like Consumer Reports or Wirecutter) and for meeting strict energy efficiency ratings.
Finally, Lyusen offers Infinite Customization and Performance Layering. We don't believe in "Standard Recipes." Every environment is different: a filter for a desert climate might need a thicker pre-filter, while a filter for an urban office might need more specialized carbon for NOx and SOx removal. As a factory that has collaborated with state R&D institutions for 26 years, we can "Tweak" the composition of each layer in your combination filter. We can add a Lysozyme Antibacterial Layer, a Cold Catalyst Layer, or even a Vitamin C Filter Layer to your composite module. This level of technical depth allows our B2B partners to create truly unique "Signature Products" that offer specialized health benefits, giving your brand a distinct competitive advantage in the global air purification market. By choosing Nantong Lyusen, you get the material science power of a world-class lab with the efficiency of a high-capacity industrial manufacturer.
Logistics, Payment & Global Shipping
Nantong Lyusen provides a professional, end-to-end export service for our combination air filters, ensuring our international B2B partners receive their "All-in-One" components with speed and total financial security. We offer a variety of flexible payment terms to support the global supply chain needs of our clients. Our primary terms are T/T (Telegraphic Transfer) with a 30% to 50% deposit and the balance paid before shipment. For our long-term strategic partners and high-volume OEM manufacturers, we offer Credit Terms (Net 30/60) or Documentary Collections (D/P). We also support Irrevocable Letters of Credit (L/C) at Sight, providing a secure payment framework for high-volume healthcare or government procurement contracts. Every transaction is handled with the highest level of transparency and international bank compliance.
Logistically, combination filters—especially the large cylindrical or box types—are "High-Volume" items that require careful handling. To minimize the international shipping costs for our clients, we utilize Custom-Designed Export Packaging that maximizes the use of space in a 40ft High Cube container. We also provide "Kitted Shipping," where filters are packed in the same boxes as your other assembly components to streamline your internal logistics. Our factory in Nantong is strategically located near the Port of Shanghai, offering weekly sailings and competitive freight rates to Japan, Korea, Europe, and the Americas. For urgent product launches or R&D requirements, we offer express air freight via FedEx, DHL, or UPS, with door-to-door delivery usually within 5-7 business days. To ensure the delicate HEPA pleats and carbon layers arrive in perfect condition, we use Moisture-Proof, Anti-Static PE Wrapping and reinforced, double-walled export cartons palletized on ISPM-15 compliant pallets. With real-time tracking and dedicated export coordinators, Nantong Lyusen ensures your specialized combination filters arrive on time and in perfect condition, ready to power your next generation of air purification products.
- Q: Is a combination filter better than using separate filters?
- A: For the end-user, yes. It makes maintenance much easier as they only have to buy and replace one unit. For the manufacturer, it allows for a sleeker, more compact product design. Technically, if the combination filter is engineered correctly by a factory like Nantong Lyusen, it can achieve the same or better performance than separate filters with a much simpler assembly and a tighter seal against the housing.
- Q: Can I customize the type of carbon used in my 3-in-1 combination filter?
- A: Absolutely. We can load the carbon layer with standard high-activity coconut shell carbon for general odors, or specialized "Impregnated Carbon" to target formaldehyde, ammonia, or acidic gases. We can also adjust the "Carbon Loading Rate" (how much carbon is in the filter) to match your target price point and service life goals.
- Q: How do I know when the combination filter needs to be replaced?
- A: Most modern purifiers use a "Filter Life Timer" or a pressure sensor. Generally, we recommend replacing combination filters every 6 to 12 months. Because the different layers will saturate at different times (the HEPA catches dust while the carbon adsorbs smells), the filter is designed to be replaced as a single unit once the most critical layer—usually the carbon or the HEPA—reaches its capacity.
- Q: Are the materials used in your combination filters safe for home use?
- A: Yes, 100%. All the materials used in our combination filters, from the synthetic fibers to the activated carbon and the adhesives, are RoHS and REACH compliant. They are non-toxic, odorless, and do not release any harmful secondary pollutants into the air. We serve global brands that have very strict "Family-Safe" requirements, and we maintain the highest standards of safety for all our B2B products.
