Quality Office Humidifier — Wholesale from MistAirHome China Factory. Custom Branding Available.
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Quality Office Humidifier — Wholesale from MistAirHome China Factory. Custom Branding Available.+8613261677119
TL;DR - The Mistairhome WL-QH03E (PRO) holds 1810 mL and mists 204 mL per hour or 93.8 mL per hour, which is 8.9 hours and 19.3 hours per fill; it covers 54 sq m (578 sq ft) at a 2.6 m ceiling and measures 29.9 dB on the high step and 27.0 dB on the sleep step; it draws 6.8 W and runs from USB-C 5V/2A or the supplied mains adapter; no internal cell on this build; it weighs 993 g and measures 19.4 x 19.4 x 31.2 cm, and ships documented to CE / RoHS / FCC standards for import into Colombia. MOQ is 200 units per SKU with a 20-30-day lead time, FOB Shenzhen or EXW Longgang.
China Wanlin supplies the Quiet Humidifier for Attic 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-QH03E-PRO:
| Misting method | Evaporative wick with a brushless DC fan drawing room air through a saturated filter |
| Tank capacity | 1810 mL |
| Evaporation rate on the high step | 204 mL per hour |
| Evaporation rate on the low step | 93.8 mL per hour |
| Run time per fill on the high step | 8.9 hours |
| Run time per fill on the low step | 19.3 hours |
| Coverage area | 54 sq m (578 sq ft) at a 2.6 m ceiling |
| Noise at 1 m on the high step | 29.9 dB |
| Noise at 1 m on the sleep step | 27.0 dB |
| Water type | Tap water is fine; minerals stay in the wick rather than becoming airborne dust |
| Mineral dust handling | No airborne minerals at all, because the water never leaves the appliance as droplets |
| Fill method | Tank lifts off in one piece and takes a bottle brush |
| 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/2A or the supplied mains adapter |
| Rated power on the high step | 6.8 W |
| Control interface | Rotary knob with three fan steps plus a humidistat target at 40, 50 and 60 percent |
| Night light | Display bar showing the set target, dimmable to off |
| Protection | Dry-run cut-out, wick-life counter, fan stall detection, tip-over switch |
| Dimensions | 19.4 x 19.4 x 31.2 cm |
| Weight | 993 g |
| Warranty | 24 months |
Shipping configuration: Pro build, + spare misting disc + demineralisation cartridge + multilingual manual. Master carton holds 12 units. Stated lead time is 20-30 days from order confirmation and deposit. Misting discs, wicks and cartridges are repeat line items and are ordered separately from the appliance.
The strongest pull in Colombia now comes from hospitality, clinical and facilities buyers rather than households, because they can put a number on complaints and on room-turn time, which makes the decision easy to defend internally. 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.
Distributors handling Quiet Humidifier for Attic lines consistently find that the repeat revenue sits in the consumable, in cartridges and wicks and replacement discs, rather than in the appliance. 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 Colombia 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. On the WL-QH03E (PRO) the figures worth carrying into the next order are the 1810 mL tank, the 19.3 hours per fill on the low step, and the 27.0 dB reading on the sleep step.
The decision that matters most in this category is not output, it is what the unit does with dissolved minerals, and it is the one most often sold badly. An ultrasonic disc atomises water, and with it everything dissolved in that water, so on a hard supply the minerals become airborne and settle as a fine white film on whatever is nearby. Two answers exist and we build both: a demineralisation cartridge in the tank, which is a consumable with a real working life, or an evaporative wick where the water never becomes airborne at all and the minerals stay behind in the wick.
The second decision is the control loop. A fixed mist step ignores the room entirely, so a sealed room overshoots while a draughty one never arrives. A humidistat with a stated target band, fed by a sensor that is calibrated at the factory and re-checkable by the buyer with a twenty-dollar hygrometer, is the difference between a product that holds a number and one that merely runs.
The third is the cleaning path, which is an engineering decision long before it is a marketing one. Standing water at room temperature grows biofilm, so the honest interval is every five to seven days in continuous use, and a tank a hand cannot reach into is a tank that never gets cleaned properly. For this configuration that means 93.8 mL per hour at 27.0 dB, holding 19.3 hours per fill across a 54 sq m (578 sq ft) room.
Three deployment records from the Quiet Humidifier for Attic 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 business process outsourcing operator with 3,200 night-shift seats
Timing: One year from January 2025
Night-shift floors are occupied around the clock and the air conditioning never stops, so the air is dry every hour of the year. The operator bought on a per-floor basis with a humidistat chassis and a four-week cleaning cycle run by the facilities team. Absenteeism was already being tracked for other reasons, and the facilities manager reported the dry-air complaints had left the monthly report by month three.
Deployment: A private paediatric practice with four consulting rooms and a nebuliser treatment area
Timing: Fourteen months from June 2025
The practice needed a declaration of every wetted part before it would put anything in the treatment rooms, which is the correct way to buy for a clinical setting and one that a lot of suppliers fail. We supplied the material declaration plus the tank, seal and disc specifications against the model code on the order. The second order, in August 2026, was placed without a further sample round, which is the useful signal.
Deployment: A pharmaceutical company fitting out 18 quiet rooms for staff rest periods
Timing: Eight months from May 2025
The company's occupational health team set a noise limit rather than buying on features, and asked for the measurement conditions in writing. We stated the distance, the room and the step, because a decibel figure without those is not a specification. The rooms were fitted with the sleep-step chassis and the team's own post-occupancy survey recorded the rest rooms as the most-used of the new facilities.
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-QH03E (PRO) packs 12 units to a carton, carries a 24 months warranty and a 20-30 days stated lead time, and draws 6.8 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 |
| 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. |
| 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. |
| SC05-HARDWATER | Markets on hard municipal water where every ultrasonic plume leaves mineral dust | White dust on dark furniture is the complaint that generates the return, not the dryness. | A demineralisation cartridge in the tank neck, or an evaporative build that sidesteps the problem entirely by leaving the minerals in the wick. |
| 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. |
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 93.8 mL per hour at 27.0 dB, holding 19.3 hours per fill across a 54 sq m (578 sq ft) room.
Three costs dominate ownership of this product and only one of them is on the invoice. The first is the appliance. The second is the consumable - cartridges, wicks and replacement discs - which is where the repeat revenue sits for every distributor we work with and which should be planned as a line item rather than bought occasionally. The third is staff time, because a tank that cannot be cleaned quickly is a tank that does not get cleaned.
A factory programme attacks all three. Consumables ship in the same container as the appliances, which is the cheapest way to buy them. Cleaning intervals are published rather than left to guesswork, and the tank geometry is chosen so the published interval is actually achievable by one person on a round.
What we do not offer is the lowest unit price in the market. A cheaper unit in this category usually buys a narrower tank neck, a disc of unspecified origin and no spares path, and every one of those shows up later as a cost somewhere else. For this configuration that means 93.8 mL per hour at 27.0 dB, holding 19.3 hours per fill across a 54 sq m (578 sq ft) room.
Compliance in this category splits into two burdens that buyers often treat as one. The first is electrical and appliance safety: the CE technical file, an EMC test report and the IEC 60335-1 household appliance safety report, which is the set that gets a unit onto a shelf in Europe. The second applies only where a cell is fitted: a UN38.3 test report with an IEC 62133 cell report and an MSDS, which is the set that gets a unit onto a vessel.
The failure mode is predictable. A buyer orders a cordless build, books the freight, and discovers at booking that the cell documentation has not been raised for that specific model code. The units sit, the season moves, and the cost is not the certificate - it is the delay. We raise the documentation against the model code on the order rather than against a family, which is the only version a customs officer will accept.
RoHS and REACH declarations cover materials, and where a buyer's own regulator asks about the water path, we supply a declaration covering every wetted part. Where a market needs a local approval, we issue against PSE, KC or RCM at the same time as the CE work rather than after it, because the test evidence largely overlaps and doing them together costs far less than doing them twice. On the WL-QH03E (PRO) the figures worth carrying into the next order are the 1810 mL tank, the 19.3 hours per fill on the low step, and the 27.0 dB reading on the sleep step.
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 0.180 cubic metres per carton of 12 units, a 40 ft container carries roughly 3,120 units by volume, and a 20 ft about 1,416. 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 20-30 days written on the proforma invoice, and a re-order point set by sell-through rather than by calendar. On the WL-QH03E (PRO) the figures worth carrying into the next order are the 1810 mL tank, the 19.3 hours per fill on the low step, and the 27.0 dB reading on the sleep step.
What order size does Wanlin accept for a first quiet humidifier shipment?
200 units per SKU on standard builds, 300 where a custom colour or private-label packaging is involved, and several models may share one container provided each SKU clears its own minimum. For a buyer testing the category for the first time, a mixed container is the lower-risk route and is the one we recommend over a single-SKU container on an unproven model.
How loud is the unit in practice, and which figure should a buyer compare?
Compare the sleep-step figure, not the headline one. WL-QH03E is rated 27.0 dB on the sleep step and 29.9 dB on the high step, both measured at one metre under stated conditions. In a bedroom the high step is rarely used, so the number that predicts whether the unit stays plugged in is the lower one.
Will an ultrasonic quiet humidifier put mineral dust on dark furniture?
On hard water, yes, unless the build deals with it. The disc atomises the water and everything dissolved in it, and the minerals settle as a white film. For WL-QH03E-PRO the answer built into the specification is no airborne minerals at all, because the water never leaves the appliance as droplets. Where neither option is acceptable to a buyer, the evaporative chassis removes the question entirely because the water never becomes airborne.
What documentation comes with a quiet humidifier shipment for customs?
CE technical file, RoHS and REACH declarations, an EMC report and the IEC 60335-1 appliance safety report as standard, plus UN38.3, IEC 62133 and MSDS on any build carrying a cell, and FCC for the digitally controlled models going to North America. Every document names WL-QH03E rather than a family, which is what a customs officer checks.
Is private label available across the quiet humidifier range?
Across the whole range, including housing colour, logo, retail artwork, manual language and the accessory kit. Most of it works inside existing tooling, so it does not add engineering time. What it does add is a decision about consumables, and we raise that early because the cartridge choice affects the return rate more than any artwork decision does.
What is the cleaning routine, and how much staff time does it take?
Five to seven days in continuous use, with a dry-out before any period of storage. The routine takes under two minutes on this chassis because the tank opening is wide enough for a hand and a brush, which is deliberate. A narrow-neck tank takes longer, gets cleaned less often, and eventually gets replaced - which is the real cost of a cheap moulding.
What happens if a unit fails inside the warranty period?
24 months on WL-QH03E against manufacturing defect. In practice most failures outside the warranty period are a worn disc or a scaled cartridge rather than a faulty appliance, which is why we stock both as separate lines and ship them with the units. A distributor who can supply the part keeps the customer.
What is the timeline from sample approval to a shipped container?
From approved sample to a shipped container, 20-30 days for first production plus the freight booking step, which is longer on battery builds because of the cell documentation. Sampling itself is 5 to 7 working days on an existing specification. We put the production figure on the proforma invoice so it is a commitment rather than an estimate.
The programme suits any buyer who has to answer for the product after it is sold, which in practice means everyone except the pure spot trader. A distributor carrying a range needs to know which chassis to put in front of which customer, and the answer is usually decided by water hardness and by who refills the tank.
Hospitality buyers need a fill interval that fits a housekeeping round. Clinical and childcare buyers need a material declaration and a light that can be turned fully off. Facilities buyers need one unit per occupied room rather than one per floor, and they need the reasoning written down so it survives staff turnover.
What all of them have in common is that they are specifying against a room and a routine rather than against a specification sheet, which is why we ask about the site before we quote the unit. For this configuration that means 93.8 mL per hour at 27.0 dB, holding 19.3 hours per fill across a 54 sq m (578 sq ft) room.
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-QH03E (PRO) packs 12 units to a carton, carries a 24 months warranty and a 20-30 days stated lead time, and draws 6.8 W on the high step.
Two things decide whether this product works, and neither is on the box: whether the tank lasts the interval the site can actually service, and whether the unit can be cleaned inside the time a round allows. Get those two right and the rest of the specification rarely matters.
Everything else on this page exists to make those two decisions possible before money moves - the figures by model rather than by marketing tier, the measurement conditions stated next to the decibel, and the honest statement of where the answer depends on the room.
Enquiries are welcome from anyone supplying this category at volume, whether as an importer, a distributor, a brand owner, a facilities or hospitality group, or a cross-border seller. Samples and the full documentation set are available on request. The WL-QH03E (PRO) packs 12 units to a carton, carries a 24 months warranty and a 20-30 days stated lead time, and draws 6.8 W on the high 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
