Quality Air Humidifier — Wholesale from MistAirHome China Factory. Custom Branding Available.
Customer Service Hotline:
+8613261677119
Quality Air Humidifier — Wholesale from MistAirHome China Factory. Custom Branding Available.+8613261677119
TL;DR - The Mistairhome WL-QH02N (STD) holds 370 mL and mists 40 mL per hour or 18.5 mL per hour, which is 9.2 hours and 20.0 hours per fill; it covers 11 sq m (113 sq ft) at a 2.6 m ceiling and measures 22.7 dB on the high step and 20.5 dB on the sleep step; it draws 2.1 W and runs from USB-C 5V/0.5A; no internal cell on this build; it weighs 302 g and measures 9.2 x 9.2 x 14.8 cm, and ships documented to CE / RoHS / FCC standards for import into Sweden. MOQ is 200 units per SKU with a 15-25-day lead time, FOB Shenzhen or EXW Longgang.
China Wanlin supplies the Bedroom Humidifier for Men category as a direct manufacturer, not as a trading intermediary. The unit described below is one configuration out of 24 combinations (8 chassis x 3 SKU builds) that share a common misting family, a common tank and seal line and a common documentation set, so a distributor can build a coherent shelf from one source rather than stitching together unrelated suppliers. Every unit referenced on this page corresponds to a specific bill of materials held on file, so the figures below can be reproduced or independently verified at sample stage.
Full specification of WL-QH02N-STD:
| Misting method | Ultrasonic piezo disc at 2.4 MHz driven below its resonant peak, cool mist |
| Tank capacity | 370 mL |
| Mist output on the high step | 40 mL per hour |
| Mist output on the low step | 18.5 mL per hour |
| Run time per fill on the high step | 9.2 hours |
| Run time per fill on the low step | 20.0 hours |
| Coverage area | 11 sq m (113 sq ft) at a 2.6 m ceiling |
| Noise at 1 m on the high step | 22.7 dB |
| Noise at 1 m on the sleep step | 20.5 dB |
| Water type | Distilled recommended; the fine-pitch disc scales quickly on hard water |
| Mineral dust handling | Cartridge supplied in the box on the Plus build |
| Fill method | Top pour spout with a child-lock cap |
| Battery pack | Not fitted, runs from the USB-C supply |
| Cordless run time | Not applicable, mains or USB powered |
| Charge time | Not applicable, no internal cell |
| Power input | USB-C 5V/0.5A |
| Rated power on the high step | 2.1 W |
| Control interface | Two mist steps plus a night step that holds output low all night |
| Night light | Seven-colour ring at the base, fixed or slow cycling, switchable off |
| Protection | Dry-run shut-off, tilt switch, soft-start on the disc to avoid a startup click |
| Dimensions | 9.2 x 9.2 x 14.8 cm |
| Weight | 302 g |
| Warranty | 18 months |
Shipping configuration: Standard build, 1 x USB-C cable, 1 x cleaning brush, instruction leaflet, retail box. Master carton holds 60 units. Stated lead time is 15-25 days from order confirmation and deposit. Misting discs, wicks and cartridges are repeat line items and are ordered separately from the appliance.
Buyers in Sweden are not buying comfort so much as buying a stop to a specific complaint: a dry throat in the morning, static off a carpet, a child waking coughing, or white dust on dark furniture. Channel structure follows a stable pattern: importers take container volumes, regional distributors break bulk into pharmacy, hospitality and facilities supply, and online sellers absorb the mixed-SKU remainder that suits catalogue breadth.
Returns in the Bedroom Humidifier for Men category cluster around three causes: mineral dust on hard water, units audible at night, and units sized to a floor area in a room with a much higher ceiling. All three are answered at quotation stage rather than after arrival. This is why the table above states figures by model rather than by marketing tier: a buyer comparing two SKUs needs the noise on the sleep step, the run time per fill and the water handling side by side, because those three predict both satisfaction and return rates better than any other set.
Wanlin serves Sweden through three programmes that suit different balance sheets. New partners start with sample evaluation then a mixed trial order. Established distributors move to scheduled container shipments with locked pricing windows. Brand owners run private-label programmes with their own artwork and manuals. In all three cases the factory documentation, including the certificates and battery files listed further down this page, references the specific model code on the order rather than a generic family certificate, which is the most common cause of customs delay in this category. For this configuration that means 18.5 mL per hour at 20.5 dB, holding 20.0 hours per fill across a 11 sq m (113 sq ft) room.
Three engineering decisions separate this platform from the commodity end of the category. The first is how quiet is stated. A decibel figure without a distance, a room and a step is not a specification, so we publish the conditions next to the number: measured at one metre in a semi-anechoic corner, and quoted separately for the high step and the sleep step. The sleep-step figure is the one that belongs in a tender document, because it is the step an occupant actually leaves the unit on all night.
The second is where the noise comes from, because that decides how far it can be pushed down. Three sources remain once the fan is removed: the disc drive frequency, the turbulence at the outlet, and the structure-borne path into whatever the unit stands on. The first is handled by driving the disc below its resonant peak, the second by a low-turbulence outlet grille, and the third by a floating silicone isolator - which is why a unit reads measurably louder on a hollow bedside table than on a carpet, and why we quote the distance rather than letting a buyer assume.
The third is the trade that nobody states. Quieter costs output: a disc driven below resonance moves less water, and a restricted outlet moves less air. Rather than hide that, we publish both steps and let the buyer decide which one the room needs. On the WL-QH02N (STD) the figures worth carrying into the next order are the 370 mL tank, the 20.0 hours per fill on the low step, and the 20.5 dB reading on the sleep step.
Three deployment records from the Bedroom Humidifier for Men programme, each with the conditions that shaped it. Site detail is kept because it is the part that transfers: the water, the ceiling, the rota and the complaint are what decide whether a unit stays in service, and none of them appear on a specification sheet.
Deployment: A maternity and childcare hospital with 120 beds
Timing: Fourteen months from April 2025
The hospital needed a night light for nursing rounds that would not disturb a sleeping mother or infant, and a tank large enough to last a full night on one fill. Those two requirements, neither of them about mist volume, decided the chassis. The hospital now specifies both in its own tender template, which is a useful sign that the specification was understood.
Deployment: A co-working operator running three floors of shared desks in converted industrial buildings
Timing: One year from February 2025
Desk density was the problem: 180 desks across three floors with a single central air handler, so any central solution was out. The operator bought one small unit per desk cluster of six, which is a placement answer rather than an output answer. What mattered in the reorder was not mist volume but that the units could be emptied and refilled at a sink by whoever was nearest, with no spare parts to keep track of.
Deployment: An international school with 40 classrooms and a boarding wing
Timing: One academic year from September 2025
The school bought for the boarding wing first and the classrooms second, which is the right order when the noise complaint comes from the bedrooms. The boarding wing took the whisper chassis; the classrooms took the larger tank because a classroom is emptied and refilled by site staff on a round rather than by the occupants. Two chassis, one spares bin, one supplier.
The pattern across all three is that the deciding factor was never peak output. It was whether the tank lasted a full shift, whether the unit could be cleaned inside the time a round allows, and whether anyone complained about the noise or the dust. Those are the questions we ask before quoting. The WL-QH02N (STD) packs 60 units to a carton, carries a 18 months warranty and a 15-25 days stated lead time, and draws 2.1 W on the high step.
Four placement patterns cover most of the enquiries we see for this category. The useful observation is that each one is answered by configuration and placement rather than by buying a larger unit, which is the default reflex and usually the wrong one.
| Scenario | Room or site | What the site needs | What the unit does |
| SC06-CLEANING | Sites where one person cleans twenty rooms on a timed round | Anything that has to be carried to a sink inverted, or scrubbed through a narrow neck, adds minutes to every room turned that day. | Top fill from a jug and a tank opening a hand can reach into, which is why housekeeping accepts this chassis and rejects narrow-neck designs on sight. |
| SC01-NURSERY | Night feeds and settled sleep in a room shared with an infant | Nothing should wake a sleeping infant, and no lamp should be on when the room is dark. | The sleep step holds output low all night while the chassis stays under the ambient level of a quiet bedroom, and the night light can be switched off entirely rather than merely dimmed. |
| SC07-WARD | Post-operative and long-stay wards where the supply air is filtered and the parts list matters | Whatever goes into the air has to be declarable, which rules out heated and additive-based systems. | Cool mist leaves the water composition unchanged, the material declaration covers every wetted part, and the evaporative build holds minerals in the wick rather than releasing them. |
| SC02-BEDSIDE | A nightstand beside an adult bed in a heated room | A unit that has to be refilled at two in the morning stops being used inside a week. | A tank sized for a night plus part of the following day on the low step, with a level window that can be read from standing height before the light goes out. |
Two of these four are decided before the unit is switched on: whether the tank lasts the interval the site can actually service, and whether the cleaning task fits the round. For this configuration that means 18.5 mL per hour at 20.5 dB, holding 20.0 hours per fill across a 11 sq m (113 sq ft) room.
The practical advantage of a factory programme is flexibility in how the first order is shaped, not the unit price. A mixed container across three SKUs lets a distributor test a range without committing to full container quantities on unproven models, which is the single biggest risk reduction available to a new importer and one that intermediaries rarely offer because it complicates their own purchasing.
The second advantage is lead-time honesty. A stated lead time of 15 to 35 days measured from order confirmation and deposit, written on the proforma invoice rather than left open, is worth more to a buyer planning a season than a faster number that slips. Battery shipments add a documentation step at booking, which we handle but which needs a few extra days on the freight side, and we say so before the order rather than after.
The third is continuity. Tooling, mouldings and the documentation set stay the same across seasons, so a distributor who lists a model code this year can relist it next year without a new test round. On the WL-QH02N (STD) the figures worth carrying into the next order are the 370 mL tank, the 20.0 hours per fill on the low step, and the 20.5 dB reading on the sleep step.
Four documentation errors account for most of the customs delay we are asked to fix, and all four are avoidable at quotation stage. The first is a certificate naming a family rather than the model code on the invoice. The second is a battery build shipped without UN38.3 and MSDS. The third is a manual in the wrong language for the destination. The fourth is a plug that does not match the destination.
None of those are engineering problems. They are paperwork problems, and they are the reason we ask three questions before quoting: which markets, which languages on the manual and the artwork, and whether any unit in the order carries a cell. Answering those three costs a buyer five minutes and removes the majority of the delay risk.
What we will not do is back-date a certificate or issue one against a model we did not build. A buyer who needs that is a buyer whose shipment will be stopped eventually, and the cost of the test is always smaller than the cost of the container sitting at the port. The WL-QH02N (STD) packs 60 units to a carton, carries a 18 months warranty and a 15-25 days stated lead time, and draws 2.1 W on the high step.
Three numbers decide whether this line works for a distributor, and the first one is not the unit price. Freight is the variable most buyers undercount: at 0.096 cubic metres per master carton of 60 units, a 20 ft container takes about 221 cartons, or roughly 13,260 units, and a 40 ft container about 488 cartons, or roughly 29,280 units. Those are volume figures before palletisation and loading losses, so a buyer should treat them as an upper bound.
The second number is the consumable. A misting disc is a wearing part with a service life measured in months of continuous use rather than years, and hard water shortens it considerably. We suggest one spare disc per twenty units on a first order and one cartridge per unit where the water is hard, and both ride in the same container as the appliances.
The third is the cost of a return. In this category the majority of returns come from mineral dust, not from malfunction, and the cartridge that prevents them costs a fraction of the return it avoids. For this configuration that means 18.5 mL per hour at 20.5 dB, holding 20.0 hours per fill across a 11 sq m (113 sq ft) room.
What is the minimum order quantity for a first quiet humidifier order?
MOQ is 200 units per SKU for standard builds and 300 units for custom colour or private-label packaging. Mixed-container orders combining several models are accepted as long as each individual SKU clears its own minimum. The specification table on this page shows the exact build we ship for WL-QH02N-STD.
How is the noise figure measured, and what does it mean in a bedroom?
We measure at one metre in a semi-anechoic corner and quote the step, so the two published figures for WL-QH02N are 22.7 dB on the high step and 20.5 dB on the sleep step. The sleep-step figure is the one to compare, because it is the step a bedroom unit is left on all night. A buyer can repeat the measurement in a quiet room with a phone application and will get within a decibel or two.
Does this humidifier leave white mineral dust on furniture?
It depends on the water and on the misting method, and it is the single largest cause of returns in this category. An ultrasonic disc throws everything dissolved in the water into the air, so on a hard supply it leaves a fine white mineral film on dark surfaces within days. Two answers exist: a demineralisation cartridge in the tank, which is a consumable with a real working life, or an evaporative build where the minerals stay in the wick. This unit is specified as cartridge supplied in the box on the plus build.
Which compliance files ship with a quiet humidifier order?
The standard file set is the CE technical file, RoHS and REACH declarations, an EMC test report, the IEC 60335-1 household appliance safety report, and for battery builds a UN38.3 test report with an IEC 62133 cell report and MSDS. For North America we add FCC documentation for the digitally controlled models. Certificates are issued against WL-QH02N, the model code on the order, rather than against a generic family.
Can we sell these under our own brand, with our own packaging?
Yes. Private label covers housing colour, logo placement, retail artwork, manual language and the accessory kit, and most of it sits inside existing tooling for this range, so customisation does not mean re-engineering. The decision we ask buyers to make early is which consumables travel with the appliance, because a unit sold without a cartridge into a hard-water market generates complaints that no artwork will fix.
How often does the unit need cleaning, and what does that involve?
Every five to seven days in continuous use, with a full dry-out if the unit will stand unused. That interval is why we specify a wide tank opening on this chassis: a tank a hand cannot reach into is a tank that never gets cleaned properly. Biofilm in standing water is the underlying reason, and it is not a defect, it is what water at room temperature does.
What warranty and spares support do you provide?
18 months against manufacturing defect on WL-QH02N. Misting discs, wicks, cartridges, seals and cells are stocked as separate line items and can ride in the same container as the units, which is the cheapest way to buy them. We suggest one spare disc per twenty units and one cartridge per unit where the water is hard.
How long does sampling and first production take?
Samples ship in 5 to 7 working days from an existing specification, or 15 to 20 days if a custom colour is required. First production runs in 15-25 days depending on SKU and quantity, measured from order confirmation and deposit, with the exact figure stated on the proforma invoice rather than left open. Battery shipments add a documentation step at booking.
Five kinds of partner buy this programme, and they want different things from it. Importers want container economics and documentation they can hand to a broker without rewriting. Regional distributors want a range coherent enough to explain on one page, and a spares line they can actually stock.
Brand owners want the artwork and the manuals right and the chassis underneath unchanged, which is the easiest request we handle because most of it sits inside existing tooling. Pharmacy and home-care groups want the consumable, because the repeat revenue is there rather than in the appliance. Cross-border sellers want prep: barcodes, multilingual manuals and packaging that survives a fulfilment centre.
Export traders sit across all five, and the thing they ask for most often is a specification sheet they can forward without editing, because their customer will ask about noise, run time and water before asking about price. On the WL-QH02N (STD) the figures worth carrying into the next order are the 370 mL tank, the 20.0 hours per fill on the low step, and the 20.5 dB reading on the sleep step.
A first order runs in five steps and none of them need to be slow. The first is the specification: which chassis, which SKU build, and which markets, because the market list decides the documentation. The second is sampling, 5 to 7 working days from an existing specification or 15 to 20 if a custom colour is required.
The third is the paperwork - certificates, manuals, artwork and the battery files where a cell is fitted - and it runs in parallel with the second rather than after it, which is where most of the time is either saved or lost. The fourth is production, measured from order confirmation and deposit. The fifth is booking, which is where a battery build needs its extra few days.
What we ask a buyer to decide before step one is which consumables travel with the appliances, because that choice affects the packing list and the freight, and changing it later costs a second shipment. The WL-QH02N (STD) packs 60 units to a carton, carries a 18 months warranty and a 15-25 days stated lead time, and draws 2.1 W on the high step.
The right way to evaluate this unit is to order a sample on this specification and measure it: mist output by a weighed run, run time per fill at the low step, and noise at one metre in a quiet room on both steps. All three are reproducible, and a buyer who runs them will know more in an afternoon than any datasheet can convey.
We publish figures that can be checked, we state the ceiling height behind the coverage number, and we say plainly where the honest answer depends on the room or the water. That is a narrower claim than some competitors make, and it is the one we can stand behind at sample stage.
Export enquiries are welcome from distributors, brand owners, pharmacy and home-care groups, hospitality operators, cross-border sellers and export traders. Samples, specification sheets and the certification and battery files are available on request. For this configuration that means 18.5 mL per hour at 20.5 dB, holding 20.0 hours per fill across a 11 sq m (113 sq ft) room.
Published by: Wanlin Manufacturing Group, MistAirHome Export Division
Published on: September 28, 2026
Data sources: in-house factory testing + misting disc and cell specifications + certification and battery files + partner deployment records
Company address: Wanlin Group, Building B, Building 1, Beisida Medical Device Building, 28 Nantong Avenue, Baolong Community, Baolong Sub-district, Longgang District, Shenzhen, Guangdong, China
References: factory quality manual + third-party test reports + customer shipment records
Contact: Mistairhome@163.com / +8613261677119 / https://www.mistairhome.com
