Executive Summary - Specification and Supply Position
TL;DR - The Mistairhome WL-AH05C (PLUS) holds 210 mL and mists 20 mL per hour or 11.0 mL per hour, which is 10.5 hours and 19.1 hours per fill; the oil side takes 1.9 mL and runs 7.3 hours per fill at 0.26 mL per hour; it covers 7 sq m (77 sq ft) at a 2.6 m ceiling and measures 25.5 dB on the high step and 22.7 dB on the sleep step; it draws 1.8 W and takes its supply from USB-C 5V/1A, with a 12 V lighter adapter on the fleet build; felt pad in the lid, two to three drops, replaced when the scent changes; the humidistat holds target band 40 to 65 percent in 5 percent steps, held within 5 percent from the controls on the unit, with every setting stored on the unit, no voice path on this chassis; 1000 mAh lithium polymer, giving 3.3 hours per charge on the low mist step; it weighs 178 g and measures 7.4 x 7.4 x 12.8 cm, and ships documented to CE / RoHS / FCC standards for import into Russia. MOQ is 200 units per SKU with a 25-35-day lead time, FOB Shenzhen or EXW Longgang.
China Wanlin supplies the Car Aroma Humidifier Cool Mist 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 oil path 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.
The scent path is the part that separates this range from a humidifier with a few drops poured into the tank. The oil sits in its own tray or pad above the water line, on seals rated for citrus and resin blends, so the disc, the tank and the gasket never contact the oil. That is what keeps a scented unit serviceable for years rather than seasons, and it is the first thing we ask a buyer to check on a competitor sample.
Full specification of WL-AH05C-PLUS:
| Misting method | Ultrasonic piezo micro-disc at 2.4 MHz with a baffled outlet aimed at the cabin |
| Tank capacity | 210 mL |
| Mist output on the high step | 20 mL per hour |
| Mist output on the low step | 11.0 mL per hour |
| Run time per fill on the high step | 10.5 hours |
| Run time per fill on the low step | 19.1 hours |
| Coverage area | 7 sq m (77 sq ft) at a 2.6 m ceiling |
| Noise at 1 m on the high step | 25.5 dB |
| Noise at 1 m on the sleep step | 22.7 dB |
| Scent delivery method | Felt pad in the lid, two to three drops, replaced when the scent changes |
| Oil tray capacity | 1.9 mL |
| Oil contact parts | Felt pad in a PP holder; the shell is UV-stabilised ABS for a dashboard |
| Scent intensity control | One output level, because a stronger scent in a closed cabin is unpleasant |
| Scent run time per tray fill | 7.3 hours |
| Oil use per hour | 0.26 mL per hour |
| Water type | Distilled or bottled; a small disc and a hot dashboard are a scaling combination |
| Mineral dust handling | Cartridge not fitted; bottled water keeps the disc alive through a summer |
| Fill method | Twist-off base filled at a tap, sealed before it goes back in the holder |
| Battery pack | 1000 mAh lithium polymer |
| Cordless run time | Up to 3.3 hours per charge on the low mist step |
| Charge time | 2.5 hours from empty |
| Power input | USB-C 5V/1A, with a 12 V lighter adapter on the fleet build |
| Rated power on the high step | 1.8 W |
| Control interface | One button on the top face, long press for the light, no menu |
| Network link | no radio on this build, start and stop are on the unit |
| App platform | no app on this build, the unit is set once and left in the holder |
| Voice assistant support | no voice assistant in a vehicle build |
| Humidistat range and accuracy | target band 40 to 65 percent in 5 percent steps, held within 5 percent |
| Scheduling | Two or four hour run timer with an auto stop when the disc runs dry |
| Night light | Single warm dot, and it can be switched off entirely for night driving |
| Protection | Dry-run shut-off, tilt switch, sealed cap, cell overcharge cut-out |
| Dimensions | 7.4 x 7.4 x 12.8 cm |
| Weight | 178 g |
| Warranty | 12 months |
| Shipped kit | Plus build, + 10 mL starter oil set + hard carry case + wick and cartridge starter set + gift box + funnel |
| Units per master carton | 80 |
| Lead time | 25-35 days |
Why Buyers Are Sourcing This Category Now
Three things move this category in Russia: heated or cooled air that dries a room faster than people expect, a home fragrance habit that has moved from candles to appliances, and a cleaning task that decides whether the product is still in use by March. Two routes dominate access. The traditional route is importer to distributor to retail; the faster one is the cross-border seller who buys direct, preps for the marketplace and skips two margin layers.
Returns in the Car Aroma Humidifier Cool Mist category cluster around three causes: mineral dust on hard water, a scent that is stronger than the room wants, and a tray that cannot be cleaned. 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 oil handling side by side, because those three predict both satisfaction and return rates better than any other set.
Wanlin serves Russia 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 oil declarations 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. The WL-AH05C (PLUS) packs 80 units to a carton, carries 12 months of warranty cover and a 25-35-day stated lead time, and draws 1.8 W on the high step.
Engineering Notes - Misting, Oil Path and Water Quality
Three engineering decisions separate this platform from the commodity end of the category, and the first is where the oil goes. The common construction drops essential oil straight into the water and atomises both together, which works for a season and then does not: the oil films the disc, attacks the tank gasket and leaves a residue that no brush reaches. On this range the oil sits in its own tray or pad above the water line, on seals rated for citrus and resin blends, so the disc, the tank and the gasket never contact the oil at all. A buyer can check this in a minute by lifting the tray on a sample unit.
The second decision is what the seals and the tray are made of, because essential oils are solvents and this is where cheap builds fail quietly. Citrus oils craze bare ABS, resin-heavy blends swell standard silicone, and both failures look like a cracked lid or a weeping seal six months after the sale rather than at sample stage. We specify PP or PC for the tray and fluorinated elastomer on the seal for any market where the oil is bought locally, which is most of them.
The third is the misting disc and the water it is fed. A fine-pitch disc at 2.4 MHz gives a cooler, finer plume that carries scent well, and it scales quickly on hard water. Every ultrasonic build in this range therefore has a demineralisation cartridge option in the tank neck, and we will decline to quote an ultrasonic build into a hard-water market without it. On the WL-AH05C (PLUS) the figures worth carrying into the next order are the 210 mL tank, the 7.3 hours of scent per oil fill, and the 22.7 dB reading on the sleep step.
Featured Deployment and Field Case Records
Three deployment records from the Car Aroma Humidifier Cool Mist 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.
Case Study 1: Galway, Ireland
Deployment: A stone-built bed and breakfast eight minutes from the Atlantic, nine rooms, open all year
Timing: Eighteen months from March 2025
Atlantic damp is a different problem from continental dryness and it misleads buyers constantly: the rooms here are not dry, but the heating is on half the year and the guests still wake with dry throats. What the owner bought was a small unit per room with a night schedule, and what she noticed was that the mist helped less than the routine - a unit that comes on at 22:00 and stops at 07:00 changed the reviews, and the same unit left on continuously did not.
Case Study 2: Bandung, Indonesia
Deployment: A home fragrance retailer with four shops and a small packing room, highland climate, cool evenings
Timing: Nine months from August 2025
A retailer selling scent is the hardest customer to supply, because they already know what a weak diffuser smells like. What they bought was a unit they could demonstrate: a visible tray, a scent step that changes in front of the customer, and a light that sells the unit in a dark shop. Sales staff were the actual specifiers, and their requirement - change the oil in under a minute without a funnel - is now on our checklist for retail customers.
Case Study 3: Polanco, Mexico
Deployment: A private paediatric practice with four consulting rooms and a nebuliser treatment area
Timing: Fourteen months from June 2025
The practice asked two questions before it asked about price: what every wetted part is made of, and whether the oil touches any of them. That is the correct way to buy for a treatment room, and it is also the question that separates a tray design from the common kind where oil goes straight into the tank. Once the infection-control committee saw that the disc, the seal and the tank never contact the oil, the remaining discussion was about scent strength, and a two-step unit that can run at half strength went in ahead of a four-step one.
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 oil could be refilled inside the round, and whether anyone complained about the smell or the dust. Those are the questions we ask before quoting. The WL-AH05C (PLUS) packs 80 units to a carton, carries 12 months of warranty cover and a 25-35-day stated lead time, and draws 1.8 W on the high step.
Application Scenarios Across Bedrooms, Offices and Hospitality
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 |
| SC01-BEDTIME | Master bedrooms where the scent is part of the wind-down routine | A scent that fades before the sleeper notices it, and a tank that lasts the night | A scheduled step-down holds output low overnight, the light goes fully dark, and the tray runs out of oil around the time the sleeper does. |
| SC10-GIFT | Boxed sets bought to be given, where the packaging carries the decision | A box that survives the shelf and a manual in the buyer's language | A gift configuration with an oil starter set, printed artwork and a multilingual leaflet, packed to a drop-test standard rather than to a catalogue photograph. |
| SC09-HALL | Open-plan lobbies with a ceiling well above a residential one | Output sized against volume, with a target rather than a step | A large-tank chassis holds a measured target and stops when the room arrives, which is the only way a tall space is controlled rather than merely filled. |
| SC08-SHOPFLOOR | Retail floors where the scent is part of how the brand is remembered | One scent across the floor, present at the door and not at the till | Two output levels by zone, with the entrance pair on a higher scent step than the interior, because the dose that works at a doorway is too much ten metres in. |
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 scent level is one the room will accept. For this configuration that means 11.0 mL per hour at 22.7 dB, holding 19.1 hours per fill and 7.3 hours of scent across a 7 sq m (77 sq ft) room.
What a Factory-Direct Programme Changes for the Buyer
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. Where an oil set ships inside the retail box, the oil declaration and the transport classification add a 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, and a scent range built on one chassis can be extended rather than rebuilt. On the WL-AH05C (PLUS) the figures worth carrying into the next order are the 210 mL tank, the 7.3 hours of scent per oil fill, and the 22.7 dB reading on the sleep step.
Certification, Oil Documentation and Market Access
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, specific to this category, is an oil set inside the retail box with no flash point on the specification, which reclassifies the whole consignment for transport.
None of those are engineering problems. They are paperwork problems, and they are the reason we ask four questions before quoting: which markets, which languages on the manual and the artwork, whether any unit in the order carries a cell, and whether any oil ships with it. Answering those 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-AH05C (PLUS) packs 80 units to a carton, carries 12 months of warranty cover and a 25-35-day stated lead time, and draws 1.8 W on the high step.
Unit Economics, Consumables and Order Sizing
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 pad, the replacement disc and, on most programmes, the oil are the repeat, and in the pharmacy, gift and hospitality channels the consumable revenue overtakes the appliance revenue within the first year.
Freight is the part that needs doing carefully. At 0.071 cubic metres per carton of 80 units, a 40 ft container carries roughly 52,320 units by volume, and a 20 ft about 23,760. 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 25-35 days written on the proforma invoice, and a re-order point set by sell-through rather than by calendar. On the WL-AH05C (PLUS) the figures worth carrying into the next order are the 210 mL tank, the 7.3 hours of scent per oil fill, and the 22.7 dB reading on the sleep step.
Buyer Questions Answered
What is the minimum order quantity for a first aroma 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-AH05C-PLUS.
Can essential oil go in the water tank, or does it have its own tray?
It has its own tray, and that is the point of the design. The oil sits above the water line on felt pad in a pp holder; the shell is uv-stabilised abs for a dashboard, so the disc, the tank and the gasket never contact it. Pouring oil into the tank is the common construction and it is the reason cheap units fail in the second season: the oil films the disc and swells the seal. On WL-AH05C the tray is 1.9 mL and lifts out for washing.
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. The answer is a demineralisation cartridge in the tank, which is a consumable with a real working life. This unit is specified as cartridge not fitted; bottled water keeps the disc alive through a summer.
Which compliance and oil documents ship with an aroma humidifier order?
The standard appliance file set is the CE technical file, RoHS and REACH declarations, an EMC test report and the IEC 60335-1 household appliance safety report, plus a UN38.3 test report with an IEC 62133 cell report and MSDS on any build carrying a cell. Where oil ships with the unit we add an IFRA-aligned statement of conformity, an allergen declaration, an MSDS per blend and a flash point figure for transport classification. Certificates are issued against WL-AH05C, 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, the accessory kit and, on the Plus build, the oil set itself. 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 much oil does a unit use, and how often does the tray need filling?
Published per model rather than left to guesswork. This unit holds 1.9 mL in the tray and uses 0.26 mL per hour on the step quoted, which works out at 7.3 hours of scent per fill. In a bedroom that is several nights per fill on the low step; in a reception area running all day it is a midweek top-up, and the one output level, because a stronger scent in a closed cabin is unpleasant let the site set how much of that dose the room actually gets.
What warranty and spares support do you provide?
12 months against manufacturing defect on WL-AH05C. Misting discs, pads, cartridges, trays and seals 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, plus a pad set per unit per year on scented programmes. On Russia shipments the parts travel inside the same container as the appliances, which avoids a second freight booking and the paperwork that comes with it.
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 25-35 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. Where an oil set ships inside the retail box, the transport classification adds a step at booking.
Who This Programme Suits
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. Home fragrance and gift companies want the oil question settled - whose oil, whose declaration, whose label - because that is where their own compliance sits. Hospitality groups want a fill and a scent refresh that fit a housekeeping round.
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 oil before asking about price. On the WL-AH05C (PLUS) the figures worth carrying into the next order are the 210 mL tank, the 7.3 hours of scent per oil fill, and the 22.7 dB reading on the sleep step.
How a First Order Is Structured
The cleanest first orders we see share one habit: the buyer declares the destination list and the oil list at quotation stage. Certificates, manuals, plugs and transport classification all follow from those two lists, and raising them once as a package costs far less than raising them market by market as each order lands.
After that the sequence is ordinary. Sample evaluation first, on the actual specification rather than a similar one, with the buyer measuring mist output by a weighed run, run time per fill at the low step, oil use over a known number of hours, and noise at one metre in a quiet room. Then the proforma invoice, which carries the stated lead time and the packing list rather than leaving them open. Then production, then booking.
The one step buyers skip and regret is the spares decision. Adding a spare disc per twenty units, a cartridge per unit where the water is hard and a pad set per unit per year costs almost nothing on a first container and prevents the top-up shipment that otherwise arrives in the middle of the season. On the WL-AH05C (PLUS) the figures worth carrying into the next order are the 210 mL tank, the 7.3 hours of scent per oil fill, and the 22.7 dB reading on the sleep step.
Next Step for Import Buyers
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, oil use over a known number of hours, and noise at one metre in a quiet room on both steps. All four 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 oil rate per hour rather than a vague number of drops, and we say plainly where the honest answer depends on the room, the water or the blend. 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, home fragrance and gift companies, hospitality operators, cross-border sellers and export traders. Samples, specification sheets and the certification and oil files are available on request. For this configuration that means 11.0 mL per hour at 22.7 dB, holding 19.1 hours per fill and 7.3 hours of scent across a 7 sq m (77 sq ft) room.
Published by: Wanlin Manufacturing Group, MistAirHome Export Division
Published on: September 30, 2026
Data sources: in-house factory testing + misting disc and oil tray specifications + certification and oil declaration 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