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This rotary humidifier filter is a spunlace fabric evaporation wheel designed to fit self-priming humidifiers and air purifiers with humidification modules. It filters water-borne calcium and magnesium ions to prevent white dust, while its capillary structure releases moisture evenly. Thesvin manufactures it as a custom-fit part, matching the frame, gear ring, and shaft interface to your device drawing. It is intended for appliance OEMs and brand owners who need a reliable, scalable filter supply.
Fitment is the starting point for this filter. The wheel is built around your host unit’s geometry: the outer diameter, the height of the fabric stack, and the position of the central hub all follow the device drawing you provide. Thesvin can mould the plastic gear ring and the central shaft interface as part of the same tooling package, so the filter locates onto the drive shaft and rotates without wobble.
The spunlace fabric is treated with a stiffness-enhancing process. This gives the wheel enough wet rigidity to stay in shape during long soaking and rotation in the water tray. It does not soften, sag, or shed fibres during the wash cycle. Because the frame and dimensions are matched to the host device, the filter seals against the tray and duct opening as intended by your design, avoiding bypass air or water.
For air purifiers with a humidification module, the same fitment logic applies: the filter mounts in the humidifier compartment, and the frame interface is tooled to the compartment’s mounting points. If you are replacing an existing filter, you can send an old part and Thesvin will work from its dimensions to confirm the fit before quoting.
The primary function is water treatment for evaporation. As water passes through the spunlace fabric, calcium and magnesium ions are physically intercepted, so the air released is free of white powder. This is a cold evaporation process: the filter does not boil water, and it does not produce the scale dust associated with ultrasonic humidifiers.
The fabric also has a long-acting antibacterial and anti-mould treatment. This helps prevent the water tank from developing odours and slime during daily use. The capillary action draws water up quickly and releases it at a steady rate, which supports consistent humidification output from the first minute to the last.
Thesvin supplies this filter for high-end cold evaporation humidifiers, air purifiers with a humidification module, and industrial constant-temperature and constant-humidity air handling units. In each case, the filter is a service part that needs to fit the specific water tray and air path of the unit.
| Item | Detail |
|---|---|
| Product name | Rotary Humidifier Filter / Humidifier Wheel Filter / Evaporative Humidifier Filter |
| Core filter and humidification material | High-absorbency humidifier paper / polymer humidification fibre |
| Core performance | Physical interception of calcium and magnesium ions (no white dust), strong capillary water uptake for rapid evaporation, long-acting inhibition of bacteria and mould |
| Physical structure | Special stiffness-enhancing process; high wet rigidity; does not soften, collapse, or fall apart during long soaking and rotation in the water tray |
| Main applications | High-end cold evaporation humidifiers, air purifiers with humidification module, industrial constant-temperature and constant-humidity air handling units |
| Frame and size customisation | 100% OEM customisation based on the complete device drawing; injection-moulded plastic gear ring, central shaft interface, and humidification area thickness can be tooled and manufactured |
| Quality system | Produced in a 50,000 m² clean factory with a CNAS-accredited testing centre; certified to ISO 9001, ISO 14001, and IATF 16949 |
Thesvin operates under IATF 16949, the automotive quality management system, which places strong emphasis on dimensional consistency and traceability. For this filter, incoming spunlace fabric is checked at IQC, the moulding and assembly steps are monitored at IPQC, and finished parts are inspected at OQC before packing. The company also holds ISO 9001, ISO 14001, and ISO 45001 certifications.
The production base covers 50,000 m² in Zhongshan, Guangdong, China, including clean workshops. A CNAS-accredited laboratory supports material and performance verification, so you can request test reports for filtration and evaporation characteristics. Products are designed to meet REACH and RoHS requirements, and compliance documents can be provided.
With more than 20 years of filter manufacturing experience and exports to Europe, the US, Japan, and South Korea, Thesvin supports OEM and ODM orders with customised dimensions, structures, frame materials, logos, and packaging. Multiple automated lines provide monthly capacity in the millions of pieces, which helps absorb seasonal demand.
To get a precise quotation, please provide:
Send these details through the contact page and Thesvin will respond with a fitment review and a quote.
Thesvin makes this rotary humidifier filter to your device drawing, so fitment is confirmed before tooling. Send the model, a drawing, or an old part, and the team will check the outer diameter, height, hub position, and gear ring interface. A custom sample is then made for you to test in your unit.
Yes. If you do not have a drawing, you can send an old filter and Thesvin will measure the critical dimensions and confirm the fitment with you. This is common for replacement projects where the original drawing is not available.
The spunlace fabric physically intercepts calcium and magnesium ions, which prevents white dust from being released. It also has a long-acting antibacterial and anti-mould treatment to inhibit bacteria and mould in the water tray. Specific efficiency figures can be validated at the CNAS testing centre based on your water quality and operating conditions.
Yes. Thesvin offers 100% OEM customisation: the gear ring, central shaft interface, humidification area thickness, and overall dimensions can be tooled to your device drawing. Logo and packaging customisation are also available.
For standard specifications, the MOQ is typically 1,000 pieces. Custom projects usually start at 3,000 pieces, depending on tooling and material. Existing samples can be provided free of charge with freight collect; custom tooling samples incur a sampling fee, which can be credited against a bulk order.
Sample lead time depends on tooling complexity and is confirmed at the quotation stage. For production, stock items ship in 7–15 days, while OEM custom orders typically take 25–35 days. Tooling projects add mould-making time, which is quoted separately.
Under normal household use (8 hours per day with purified or soft water), the standard spunlace filter is recommended for replacement every 3–6 months. Upgraded antibacterial versions can last 6–12 months. Actual life depends on water hardness and duty cycle, and can be simulated at the CNAS laboratory.
Yes. Share your device model, size or drawing, airflow or water flow, operating conditions, and estimated quantity through the <a href="/en/contact">contact page</a>. Thesvin will review the fitment and recommend the appropriate material and structure for your application.