Bathroom exhaust fan manufacturers in China include makers of ceiling and wall-mounted extract fans with a grille, makers of inline fans that sit in the duct away from the room, makers of window and through-wall fans, producers of units that combine a fan with a light or a heater, and general ventilation suppliers that quote fans together with ducting, grilles and controls. In a hotel or an apartment block an extract fan is specified for the bathrooms, and sometimes for kitchens and laundries, so one model choice can be repeated in every unit. Each route supplies a different fan, mounting and control arrangement under the same name.
This guide sorts the supply side into five sourcing routes so a procurement team can send one brief to the right makers and compare the answers fairly. It is not a ranking. No factory is named or scored here, and no claim is made about the airflow, noise, power use or approval status of any fan. The mechanical engineer and the local rules define those requirements, and each maker must show evidence for the exact model it offers. For related items, see our guides to HVAC and commercial air conditioning manufacturers and voltage and electrical standards for lighting and appliances from China.
What should an exhaust fan brief state?
A brief that says only “bathroom fan, ceiling type, 300 no.” produces quotations that cannot be compared, because the duty, the duct connection and the control are left open. State at least the following, copied from the mechanical schedule, the ceiling plans and the electrical drawings.
- Item code and quantity: each fan type from the mechanical schedule, with the quantity per room type, so fans are priced against locations and not against a total.
- Duty: the airflow and the duct system the engineer has designed for, written as the engineer writes them, with the room each fan serves.
- Mounting: ceiling, wall, window or inline in the duct, and the cut-out or space the drawing allows.
- Duct connection: the spigot size and the duct type each fan connects to, and any backdraft shutter the drawing shows.
- Grille and finish: the grille the room sees, its finish and colour, and how it is fixed.
- Controls: switch, timer, humidity or presence control, or connection to a building system, as the engineer specifies.
- Electrical supply: the voltage, frequency and wiring arrangement of the destination, and the approval the destination requires, set by the engineer and the authority and not by the maker.
- Combined functions: any light or heater in the same unit, written as a separate requirement.
- Packing: how fans are boxed and marked by floor or unit type, and which parts ship separately.
Five sourcing routes for bathroom exhaust fans
1. Ceiling and wall extract fan makers
These makers produce compact fans with a grille for fixing in the bathroom ceiling or wall. Ask for the model data sheet, the cut-out and spigot dimensions, the grille and finish description, the control options and the documents offered for the exact model at the destination supply. This route suits guest bathrooms and apartment bathrooms.
2. Inline duct fan makers
Inline fans sit in the duct, away from the room, and can serve one or several grilles. Ask for the model data sheet, the duct sizes it connects to, the mounting and access description and the documents for the exact model. This route suits projects where the engineer wants the fan out of the room or one fan for several rooms.
3. Window and through-wall fan makers
These makers supply fans for fitting in a window pane or a wall sleeve, with an outside cover or shutter. Ask for the model data sheet, the cut-out or sleeve size, the outside cover and the fixing description. This route suits refurbishment and buildings without duct runs to a riser.
4. Fan, light and heater combination makers
Some makers combine an extract fan with a light or a heater in one ceiling unit. Ask for the data sheet of the combined unit, the switching arrangement for each function, the cut-out size and the documents for the exact combined model, because documents for the fan alone do not describe the unit.
5. General ventilation suppliers
General suppliers quote fans with ducting, grilles, shutters and controls as one package. This gives one party for the system, but ask for each item on its own line, for the maker of each fan model and for the documents in that maker’s name. See our guide to building valve manufacturers for plumbing and HVAC projects for related services items.
How to compare exhaust fan quotations
- Model and duty: the model named on each line, with the duty it was selected for.
- Mounting and size: cut-out, spigot and overall dimensions stated per model.
- Included parts: grille, shutter, mounting kit, controls and connectors listed with quantities.
- Electrical: the supply voltage and frequency the model is built for, and the plug or terminal arrangement.
- Units of measure: price per fan and what a fan includes.
- Evidence: which documents are offered for the exact model at the destination supply, with the date and the body that issued them.
- Exclusions and substitutions: any change of model, grille, control or supply the maker proposes.
A quotation that is cheaper on one line may be thinner on another. Read the descriptions side by side before reading the totals.
Sourcing this for a commercial project?
FBM Sourcing manages the entire China procurement package for overseas construction projects. We work with Developers · General Contractors · Builders · Commercial Project Owners · Interior Design & Construction Companies · FF&E Solution Providers. Send your BOQ, drawings or product schedule for review.
Coordinating fans with ducts, ceilings and power
A bathroom fan touches three trades: the ceiling or wall it is fixed into, the duct it discharges into and the power and control that run it. Mark every fan on the ceiling plan with its item code, confirm with the mechanical engineer the duct size and route for each, and confirm with the electrical engineer the switching and the supply. Where the ceiling has a module or a feature layout, ask the designer to confirm the grille position before the order is placed.
Fans are serviced from the room, so ask each maker how the grille is removed, how the motor is reached and whether spare parts are kept for the model. Write the answers into the schedule next to the item code, so the operator can find them after handover.
Samples, approval and acceptance on delivery
Approve a sample of each fan model with its grille and control before bulk production, connected to the destination supply where that can be arranged, and check the grille finish against the ceiling. Record the approval in writing against the item code and keep the sample as the reference for the bulk order.
On delivery, check cartons against the order: model, grille, control, the supply rating on the label and quantity per floor. Note any damage or difference in writing on the day with photographs, so the maker can respond while the evidence is fresh. Before shipment our own team checks quantities, finish, labels and packing against the signed-off specification, and you receive a QC report with photos and video.
What evidence to ask each route for
Evidence should be requested for the exact model at the destination supply, not for a product family. Ask for the following in writing and keep the answers with the quotation.
- Ceiling and wall fan makers: the model data sheet and the documents offered for the exact model at the destination supply.
- Inline fan makers: the data sheet, the mounting and access description and the documents for the exact model.
- Window and through-wall makers: the data sheet, the cut-out or sleeve detail and the documents for the exact model.
- Combination unit makers: the documents for the exact combined model, not for the fan alone.
- General suppliers: the fan maker’s own documents for each exact model, not the trader’s summary.
Specification gaps to close before quotation
A quotation cannot answer the questions below for itself. Check that the brief answers these questions before it goes out.
- Which duty and duct size does the engineer state for each room?
- Which control does each fan use, and who supplies it?
- Which supply voltage and frequency does the destination use, and which approval does the specification require, in which standard and edition?
- Which units combine a light or a heater, and are the documents for the combined unit?
- Who confirms grille positions against the ceiling layout?
- How are cartons marked by floor or unit type, and what documents travel with them?
Next steps for a bathroom fan package
Send each maker the same brief and ask for answers in writing, line by line, with samples or documents before bulk production. FBM Sourcing manages China procurement packages for overseas projects; furniture-only packages are also run through FBM Furniture.
Questions buyers ask about bathroom exhaust fans from China
Can two fan quotations be compared by unit price alone?
No. A unit price says nothing about the duty, the mounting, the control or the supply the model is built for. Compare the model, the included parts and the evidence on each line before comparing totals.
Who decides the airflow of a bathroom fan?
The mechanical engineer does, from the room and the duct system. Give every maker the same duty and duct size in the brief so the quotations answer the same question.
Do the documents for a fan cover a fan with a light or heater?
Not on their own. A combined unit is a different model, so ask the maker for the documents issued for the exact combined model.
Do we need a sample before ordering?
Yes, for each model. Approve a sample with its grille and control and keep it as the reference for the bulk order.
How does FBM Sourcing support this kind of package?
We review the brief, collect comparable quotations and manage the package for the project. For suppliers you nominate, we charge a 5% commission; for products we source for you, we quote a direct price. Our own team performs one inspection after bulk production is complete and before shipment, and the client’s project team is welcome to attend.
FBM Sourcing manages the entire China procurement package for overseas construction projects. We work with Developers · General Contractors · Builders · Commercial Project Owners · Interior Design & Construction Companies · FF&E Solution Providers.
