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TL;DR - The Mistairhome WL-QH05B (STD) holds 520 mL and mists 59 mL per hour or 28.1 mL per hour, which is 8.8 hours and 18.5 hours per fill; it covers 16 sq m (167 sq ft) at a 2.6 m ceiling and measures 23.5 dB on the high step and 21.3 dB on the sleep step; it draws 3.0 W and runs from USB-C 5V/2A, runs while charging; 4000 mAh lithium polymer, giving 9.9 hours per charge on the low mist step; it weighs 557 g and measures 11.8 x 11.8 x 20.2 cm, and ships documented to CE / RoHS / FCC standards for import into Finland. MOQ is 200 units per SKU with a 15-25-day lead time, FOB Shenzhen or EXW Longgang.
China Wanlin supplies the Quiet Bedside Humidifier for Elderly 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-QH05B-STD:
| Misting method | Ultrasonic piezo disc at 1.7 MHz with a low-turbulence outlet grille |
| Tank capacity | 520 mL |
| Mist output on the high step | 59 mL per hour |
| Mist output on the low step | 28.1 mL per hour |
| Run time per fill on the high step | 8.8 hours |
| Run time per fill on the low step | 18.5 hours |
| Coverage area | 16 sq m (167 sq ft) at a 2.6 m ceiling |
| Noise at 1 m on the high step | 23.5 dB |
| Noise at 1 m on the sleep step | 21.3 dB |
| Water type | Tap or distilled; the tank lifts off as a single piece |
| Mineral dust handling | Cartridge optional, drops into the filler neck |
| Fill method | Top fill, sealed cap for carrying |
| Battery pack | 4000 mAh lithium polymer |
| Cordless run time | Up to 9.9 hours per charge on the low mist step |
| Charge time | 3.1 hours from empty |
| Power input | USB-C 5V/2A, runs while charging |
| Rated power on the high step | 3.0 W |
| Control interface | Top touch pad, three mist steps, timer at two, four and eight hours, memory function |
| Night light | Warm dot plus a downward glow, both switchable off |
| Protection | Dry-run shut-off, tilt switch, cell over-temperature and overcharge cut-out |
| Dimensions | 11.8 x 11.8 x 20.2 cm |
| Weight | 557 g |
| Warranty | 18 months |
Shipping configuration: Standard build, 1 x USB-C cable, 1 x cleaning brush, instruction leaflet, retail box. Master carton holds 40 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 Finland 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. Market entry cost keeps falling because small-batch first orders are viable: a distributor can test a range without committing to full container quantities on unproven models.
Returns in the Quiet Bedside Humidifier for Elderly 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 Finland 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 28.1 mL per hour at 21.3 dB, holding 18.5 hours per fill across a 16 sq m (167 sq ft) room.
Three numbers decide whether this category works in a room, and only one of them appears on most specification sheets. The first is millilitres per hour, quoted for both steps so a buyer can divide it into the tank capacity and know how long a fill lasts before ordering a single unit. The second is hours per fill, which is the number that decides whether a unit needs filling every night or every second night - and therefore whether it survives its first season in a household.
The third is the coverage figure, and it is the one most often quoted dishonestly. We state the ceiling height behind it, because a floor area alone means nothing: a room with 3.4 m ceilings holds proportionally more air and will run a unit dry faster than the floor plan suggests, and a mechanically ventilated room loses moisture continuously regardless of its size. Any buyer can check this in twenty minutes with a hygrometer, and we would rather they did.
Every production batch is sampled for four things before release: mist output against the declared figure by weighed run, the decibel reading at one metre on both steps, pack capacity against the cell specification by discharge test where a cell is fitted, and dry-run shut-off function on an empty tank. The WL-QH05B (STD) packs 40 units to a carton, carries a 18 months warranty and a 15-25 days stated lead time, and draws 3.0 W on the high step.
Three deployment records from the Quiet Bedside Humidifier for Elderly 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 hospital group with four facilities on the Red Sea coast
Timing: Eighteen months from February 2025
Coastal salt air plus continuous air conditioning is hard on appliance connectors, and the group had seen charging contacts fail on a previous supplier's units within a season. The sealed base and covered connector specified on the units shipped there cost very little and removed the failure mode, and the group extended the same specification to its second facility.
Deployment: A facilities contractor supplying humidifiers to 40 offices under a single managed estate
Timing: One year from March 2025
The contractor's problem was standardisation, not price. Forty offices with different floorplates meant one unit could not serve all of them, so we supplied three chassis against three room bands and published the coverage figure with the ceiling height stated. The estates team verified the numbers with their own hygrometers over a fortnight, which is the check we ask every buyer to run, and the rollout went to all forty sites in the autumn.
Deployment: A regional distributor supplying electrical wholesalers across western Finland
Timing: Two heating seasons from September 2024
Finnish heating seasons are long and the indoor air is dry for most of them, so the category sells itself; what the distributor needed was a range that could be explained in one page. We supplied a comparison sheet with mist output, run time per fill and noise for all eight chassis on a single page, and the distributor translated it into Finnish and put it on the counter. That sheet is now the reason the range is in their second season.
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-QH05B (STD) packs 40 units to a carton, carries a 18 months warranty and a 15-25 days stated lead time, and draws 3.0 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 |
| SC09-TANKRUN | Rooms with nobody responsible for refilling, and buildings on a weekly maintenance round | Refilling decides whether an appliance survives in a managed building more than performance does. | A large tank holding a night plus a working day on the low step, with a humidistat so the unit runs only when the room actually needs it. |
| SC10-LARGESPACE | Open-plan rooms, studios and lobbies with ceilings well above 2.6 m | A floor-area figure quietly assumes a standard ceiling, and a heritage or lobby space rarely has one. | Sizing against the room volume instead, and where the space opens to the outside, closed-loop control holding a target rather than a fixed mist step. |
| 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. |
| 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 28.1 mL per hour at 21.3 dB, holding 18.5 hours per fill across a 16 sq m (167 sq ft) room.
Buying direct changes three things that no catalogue can show. The first is the bill of materials. A trading company quotes a price; a factory can tell you which disc, which cell and which seal is inside the unit, and what each of them costs to replace. That matters in this category more than most, because the wearing parts are the parts that decide whether the product is still in service in March.
The second is what happens when something goes wrong at the destination. A defect that traces to a single component is a component we stock, and it rides in the next container at the cost of the part rather than at the cost of a replacement unit. A distributor who cannot supply a consumable loses the next appliance order along with the goodwill.
The third is the ability to say no. We will decline an ultrasonic build for a hard-water market without the cartridge, because that configuration produces a return rate rather than a reorder, and a factory that can change the build is the only kind of supplier that can give that answer honestly. The WL-QH05B (STD) packs 40 units to a carton, carries a 18 months warranty and a 15-25 days stated lead time, and draws 3.0 W on the high step.
Market access for this product is mostly a documentation exercise, and the mapping is stable. Europe wants the CE technical file, an EMC report and IEC 60335-1. North America adds FCC documentation for the digitally controlled models. Japan and Korea issue against PSE and KC, Australia and New Zealand against RCM, and all four want the certificates to name the model being shipped.
The second thing worth knowing is what a certificate does not cover. It does not cover the water path, and a clinical or childcare buyer will ask about that before it asks about EMC. We hold a material declaration for every wetted part - tank, seal, disc and outlet - and it is the document that most often decides a hospital order.
The third is the battery overlay. Where a cell is fitted, UN38.3 and IEC 62133 sit on top of everything else and add a step at freight booking. For a buyer shipping to several markets at once, the cheapest route is to declare the full destination list at quotation stage so the documentation is raised once, in one package, rather than market by market as each order lands. For this configuration that means 28.1 mL per hour at 21.3 dB, holding 18.5 hours per fill across a 16 sq m (167 sq ft) room.
The economics of this line are an annuity, not a one-off sale, and buyers who plan it that way outperform the ones who do not. The appliance is the entry; the cartridge, the wick and the replacement disc are the repeat, and in the pharmacy and hospitality channels the consumable revenue overtakes the appliance revenue within the first year.
Freight is the part that needs doing carefully. At 0.143 cubic metres per carton of 40 units, a 40 ft container carries roughly 13,040 units by volume, and a 20 ft about 5,920. Those are upper bounds before pallet and loading losses, and the honest planning figure is a little below them.
What we suggest to a first-time buyer is deliberately unglamorous: a mixed trial order across two or three SKUs, spares at one disc per twenty units, a stated lead time of 15-25 days written on the proforma invoice, and a re-order point set by sell-through rather than by calendar. On the WL-QH05B (STD) the figures worth carrying into the next order are the 520 mL tank, the 18.5 hours per fill on the low step, and the 21.3 dB reading on the sleep step.
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-QH05B-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-QH05B are 23.5 dB on the high step and 21.3 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 optional, drops into the filler neck.
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-QH05B, 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-QH05B. 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.
This is a programme for buyers who intend to reorder. The first order is rarely the profitable one for either side; what makes it worthwhile is a range that can be relisted next season without a new test round, a spares line that keeps customers, and a consumable that brings them back.
It suits distributors building an air-treatment shelf, brand owners who want a chassis they can put their own artwork on, pharmacy and home-care groups planning a consumable line, hospitality groups standardising across several properties, and cross-border sellers who need prep done before the container moves.
It suits less well anyone whose only criterion is the lowest unit price, because the price difference between a well-built unit and the cheapest one on the market is smaller than the cost of the returns it prevents. The WL-QH05B (STD) packs 40 units to a carton, carries a 18 months warranty and a 15-25 days stated lead time, and draws 3.0 W on the high step.
First orders go wrong in two predictable places, and both are administrative. The first is documentation raised against the wrong model code, which stops a container at the destination for a reason that has nothing to do with the product. The second is a packing list decided after production begins, which forces either a second shipment or a compromise on the spares.
The sequence that avoids both is short. Agree the specification and the destination list, evaluate a sample on that specification, confirm the packing list including consumables, then release production against a stated lead time written on the proforma invoice.
For a buyer new to the category we also suggest a mixed container across two or three SKUs rather than a single-SKU container, because the sell-through data from one mixed shipment is worth more than any forecast either side can produce in advance. For this configuration that means 28.1 mL per hour at 21.3 dB, holding 18.5 hours per fill across a 16 sq m (167 sq ft) room.
If there is one thing to take from this page, it is that the quiet claim and the dust claim are the two that decide the return rate, and both can be checked before an order is placed. Measure the noise on the step people sleep on, and put the unit on the water it will actually be sold with.
Everything else - output, coverage, run time, documentation - is measurable and published here so it can be verified rather than taken on trust. Where the answer depends on the room we say so rather than quoting a number that only holds in a laboratory.
Wanlin supplies this range as a manufacturer and is open to partnership with distributors, brand owners, pharmacy and home-care groups, hospitality and facilities buyers, cross-border sellers and export traders. Samples, specification sheets and certificates are available on request. On the WL-QH05B (STD) the figures worth carrying into the next order are the 520 mL tank, the 18.5 hours per fill on the low step, and the 21.3 dB reading on the sleep step.
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
