Air Purification Technologies - FAQ

A: Common air‑purification technologies include HEPA filtration, activated carbon adsorption, UV‑C germicidal light, negative‑ion generator, plasma and ozone oxidation, electrostatic, PCO, RCI CELL technology. Each technology has its own advantages and applicable limits. LUFUTATECH develops products covering multiple purification technologies for different application demands.

A: HEPA filter physically traps fine particles such as dust, pollen, pet dander and mold spores. It is excellent for removing solid particulates, but cannot eliminate gaseous odors, VOCs or kill airborne viruses by itself. Some LUFUTATECH dehumidifier‑purifier models are fitted with standard HEPA filter modules including H10 and H13.

A: Activated carbon absorbs gaseous odors and VOCs via physical adsorption. It cannot kill bacteria or viruses. Carbon will saturate over time and must be replaced regularly; high‑concentration heavy odors will shorten its service life dramatically.

A: UV‑C light damages the DNA of bacteria and viruses to achieve disinfection. However, UV‑C only works when pathogens pass directly through the light beam; it cannot penetrate corners or eliminate stubborn odors. It is usually used as auxiliary purification function instead of standalone solution. On the contrary Ozone can reach anywhere that UVC can't reach. And if the object is too far away from the UVC, there is almost no function.

A: Negative ions make suspended particles stick together and drop onto surfaces. It reduces floating dust, yet it does not destroy odors, VOC or microorganisms. Settled pollutants may re‑enter the air again when disturbed. Many of LUFUTATECH air purifier such as LFT-223AC with negative ion output ≥5×10⁶ ions/cm³.

A: Unlike filters which trap or absorb contaminants, ozone oxidizes and decomposes odors, mold, bacteria, viruses and VOCs at molecular level. As a gas, ozone can reach cracks and hidden corners that filters cannot access. Important note: ozone shock treatment must run in unoccupied space. LUFUTATECH portable ozonators such as LFT‑150LB and LFT‑153LK adopt ceramic‑plate corona‑discharge ozone technology.

A: HEPA, carbon filter, UV‑C and ionizers can only relieve such heavy odors partially. For embedded heavy‑duty odors, ozone oxidation is the most effective solution. For fire restoration and heavy commercial odor removal, we recommend LUFUTATECH LFT‑153LK 10G/H commercial ozonator. lufutatech also has larger ozone output industrial ozone machine such as LFT-154 20G/H, LFT-144AS heavy duty ozone machine with 40G/H ozone output.

A: Yes. Many real‑world projects combine different technologies. For example: use HEPA + carbon for daily occupied‑space filtration; run ozone generator for periodic shock‑treatment when the room is empty. LUFUTATECH can provide multi‑function combined‑unit solutions via OEM customization. Most of LUFUTATEH air purifiers use multi-purification tech e.g. LFT-263, LFT-262. LFT-221AB. Only ozone is the best way to deeply clean and remove odor. Caution, if ozone works, human, pet should be away and the place should be closed well. Air at least 30 minutes before you come in after ozone treatment.

A: True HEPA means the filter meets standard of removing ≥99.97% of 0.3μm airborne particles. HEPA grades H10‑H13 follow EN 1822 European standard. H10: basic HEPA grade, around 85% efficiency for 0.3μm particles H13: high‑grade True HEPA, captures ≥99.95% of 0.3μm fine particles, widely used for commercial‑grade air cleaning. Many LUFUTATECH multi‑function air purifiers adopt H13 True HEPA for high‑efficiency particulate filtration. Please note even H13 HEPA only captures solid particles; it cannot break down VOC gas or stubborn odors.

A: Yes. As original manufacturer, we support OEM & ODM. You can configure combinations of HEPA filter, activated carbon, ozone module according to your target market and application scenarios.

A: TiO₂ (Titanium Dioxide) is a widely‑used, non‑toxic semiconductor photocatalyst material. When illuminated by UV‑C light, TiO₂ is activated to generate hydroxyl free radicals. These radicals oxidize and decompose VOC, odor molecules, bacteria and mold spores, converting pollutants into harmless water vapor and CO₂, instead of just trapping contaminants on filter surface. It is used as core catalytic medium for PCO systems. LUFUTATECH multi‑function air purifiers such as LFT‑263AW, LFT‑262BW adopt honeycomb‑structured TiO₂ photocatalyst boards for auxiliary deodorization and germ‑reduction.

A: PCO (Photocatalytic Oxidation) is an air purification technology combining UV‑C light + TiO₂ photocatalyst. UV light excites the TiO₂ catalyst to produce reactive oxidizing radicals. When polluted air flows through the module, VOCs, odors, mold and airborne microorganisms are broken down at molecular level. PCO complements HEPA filter: HEPA captures solid particles; PCO decomposes gaseous contaminants. LUFUTATECH models LFT‑263AW, LFT‑223AC integrate PCO modules together with HEPA, activated carbon and UVC lamp for multi‑stage comprehensive purification.

A: RCI (Radiant Catalytic Ionization) Cell is an advanced active purification cell. It uses broad‑spectrum UV lamp together with multi‑metal noble‑metal coated catalytic matrix. It produces friendly reactive oxygen species (ROS) — hydrogen peroxides and superoxide ions. Unlike PCO which only treats air passing through machine, RCI releases oxidizing agents into surrounding space, treating both airborne pollutants and exposed surface bacteria, mold and odors. LUFUTATECH LFT‑223AC, LFT-262, LFT-263 air purifier are equipped with built‑in RCI‑Cell for whole‑room active air & surface sanitation.

A: TiO₂: It is only the raw catalyst material, the core consumable component of PCO modules. PCO: Passive purification; pollutants must flow through inside the machine to get decomposed by UV+TiO₂ reaction. RCI Cell: Active catalytic ionization cell; generates reactive oxidants that spread out into the whole room to treat air and exposed surfaces beyond machine body. LUFUTATECH provides different combinations: you can select passive PCO‑TiO₂ models such as LFT‑263AW, or active RCI‑Cell unit LFT‑223AC. OEM customization is available to configure PCO / RCI‑Cell according to target‑market requirements.

A: No. PCO and RCI‑Cell work on gaseous pollutants, odors and microbes. They cannot physically capture dust, pollen, pet dander and solid particulates. For full‑scale air treatment, LUFUTATECH combines HEPA H13 filter with PCO / RCI‑Cell / UV‑C / activated carbon. Each technology covers different type of contaminants for better overall performance.

Q16: How does the RCI CELL work? A: RCI (Radiant Catalytic Ionization) Cell adopts broad‑spectrum UV light together with special multi‑noble‑metal coated catalytic substrate. When UV energy hits the catalytic surface, it generates safe reactive oxygen species (ROS), including hydrogen peroxide and superoxide ions. These oxidizing molecules disperse out from the unit into the whole room, not only treating the air passing through the machine, but also reaching exposed surfaces. They break down odors, VOCs, airborne mold and bacteria on surfaces. Different from passive PCO‑TiO₂ which only treats air flowing inside the device, RCI‑Cell delivers whole‑space active sanitation. LUFUTATECH LFT‑223AC multi‑functional air purifier is fitted with original RCI‑Cell module for comprehensive air and surface treatment.

A: PCO (Photocatalytic Oxidation) uses UV‑C light to activate TiO₂ photocatalyst, generating oxidative free radicals to decompose pollutants at molecular level, rather than just trapping contaminants on filter media. Key benefits: Breaks down gaseous pollutants: Destroys VOCs, chemical fumes and stubborn odors such as pet smell, paint fumes and cooking odor, which HEPA filter cannot remove. Reduces airborne mold and bacteria: Oxidizes microbial contaminants passing through the air channel. No secondary waste accumulation: Converts pollutants into harmless water vapor and CO₂, without holding contaminants inside the filter. Works well as complementary technology: PCO pairs perfectly with HEPA and activated carbon. HEPA captures solid dust particles; carbon absorbs gas; PCO decomposes odorous gas molecules. LUFUTATECH multi‑function air purifiers including LFT‑263AW and LFT‑262BW integrate built‑in PCO TiO₂ modules to realize multi‑stage comprehensive air purification.