This PVC inline duct fan 150mm moves air through round 150mm ducts to extract stale, humid air or bring fresh air in. Sparks Plumbing Experts supplies it in Kenya and across East and Central Africa to electricians, HVAC installers and building contractors.
Because the fan sits inside the duct run rather than on the wall, it stays out of sight and is often quieter in the room. In addition, the PVC housing resists moisture and mild corrosive air.
What is an inline duct fan 150mm?
An inline duct fan is a fan built into a short round housing that connects directly between two sections of ducting. It pushes or pulls air along the duct, so you can place it in a ceiling void or loft and run ducts to grilles in several rooms.
Ventilation removes moisture, odours and pollutants from indoor air and replaces them with cleaner outdoor air. Good extraction in bathrooms and kitchens prevents mould, peeling paint and stale smells.
Further reading
- Building ventilation (Wikipedia)
- Air ducts explained (Wikipedia)
- Indoor air quality (Wikipedia)
Key terms explained
- Inline
- Fitted within the duct run rather than on a wall or window.
- m³/h
- Cubic metres of air moved per hour, the fan's airflow.
- Static pressure
- The resistance of ducts and grilles that the fan must push against.
- Mixed-flow fan
- A design between axial and centrifugal fans that handles duct resistance well.
- Backdraft shutter
- A flap that stops outside air blowing back when the fan is off.
Features and benefits
- Light, corrosion-resistant PVC housing
- Fits standard 150mm round ducting
- Installs out of sight in ceilings or lofts
- Can serve one room or several grilles
- Suits humid areas such as bathrooms and laundries
- Simple mounting with clamps or brackets
Technical specifications
| Product | PVC inline duct fan |
|---|---|
| Duct size | 150mm round |
| Housing | PVC plastic |
| Typical power | About 15 to 25 W (model dependent) |
| Typical airflow | About 120 to 180 m³/h free air (model dependent) |
| Supply | Single phase, check model rating |
| Mounting | Inline, duct-mounted |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
Airflow falls as duct length and bends increase. Send us the room size and duct route, and we will check the model suits your system.
Applications of an inline duct fan 150mm
- Bathrooms. Extracting steam and odours to stop mould.
- Toilets. Removing smells in internal toilets without windows.
- Domestic kitchens. Supporting cooker hoods with extra extraction.
- Laundry rooms. Clearing humid air from washing and drying areas.
- Small offices. Supplying fresh air to rooms with poor natural ventilation.
- Store rooms. Preventing damp and stale air in closed stores.
- Greenhouses. Moving air to control heat and humidity.
- Grow rooms. Exchanging air in small indoor growing spaces.
- Server cupboards. Removing warm air from small equipment cabinets.
- Hotel bathrooms. Extracting en-suite bathrooms through shared ducts.
- Changing rooms. Removing moisture from showers and lockers.
- Duct boosting. Adding airflow to long duct runs that underperform.
- Basements. Ventilating below-ground rooms that trap damp air.
- Clinics. Extracting small treatment and sluice rooms.
- Workshops. Removing light fumes from small work areas, within the fan's rating.
How to choose and install
- Size the airflow to the room volume and the number of air changes needed.
- Keep duct runs short and straight, since every bend reduces airflow.
- Fit a backdraft shutter or cowl on the outside terminal.
- Mount the fan on rubber supports to reduce vibration noise.
- Have a qualified electrician wire it, with a switch or timer as required.
- Leave access to clean or replace the fan later.
Why choose Sparks Plumbing Experts
- Fans in several sizesInline duct fans and box fans come in a range of diameters, so you can match airflow to the room.
- PVC and metal optionsChoose corrosion-resistant PVC for humid rooms or metal housings for tougher conditions.
- Grilles and diffusers tooDiffusers, louvers and grilles finish the system you are ventilating.
- Sizing guidanceTell us the room size and duct route, and we help you pick a fan with enough airflow.
- Visit or collect in NairobiOur store is at KCB Building, Enterprise Road, in the Industrial Area, so you can see parts before you buy or collect your order.
- Quotes your wayAsk for prices by phone, WhatsApp, email or the online quote form, whichever suits you on site.
- Over 1,600 products in one placeOur catalogue covers 55 categories, so one supplier can handle most of your parts list.
- Help choosing the right partSend a nameplate photo, a drawing or the old part, and we help you match size and specification.
- Single items or project quantitiesWe price a single replacement part just as readily as a full site order.
- Supply across East AfricaWe serve customers across Kenya. We also supply buyers in Uganda, Tanzania, Zanzibar, Rwanda, Burundi, DR Congo, Ethiopia and South Sudan.
Related products and accessories
Browse more: Ventilation · Diffusers · Louvers · HVAC.
Ordering from Sparks Plumbing Experts
We supply customers across Kenya. We also serve buyers in Uganda, Tanzania, Zanzibar, Rwanda, Burundi, DR Congo, Ethiopia and South Sudan. You can collect from our store at KCB Building, Enterprise Road, Nairobi, or ask us about delivery to your site. Send your quantities and specifications, and we will reply with prices and availability.
Request a Quote WhatsApp 0726 086 895
Frequently asked questions
What is an inline duct fan used for?
It moves air through ducts to extract stale air or supply fresh air, usually from a hidden position in a ceiling or loft.
What size duct does this fan fit?
It fits 150mm round ducts. We also supply 100mm, 200mm, 250mm and 315mm models.
Is a PVC fan better than a metal one?
PVC is light and resists moisture and mild corrosion, which suits bathrooms and laundries. Metal fans suit warmer air and tougher conditions.
How much air does it move?
Typical 150mm PVC models move about 120 to 180 m³/h in free air. Ducts and grilles reduce the real figure.
Can one fan serve two bathrooms?
Often yes, using a Y-branch and two grilles, provided the fan has enough airflow and pressure for both.
Is it noisy?
Inline fans are usually quieter in the room because the motor sits away from the grille. Rubber mounts and a short duct section help further.
Can I use it in a kitchen?
Yes for general extraction, but grease-laden air from cooking needs a hood with filters to protect the fan.
Does it need a timer?
A timer or humidity switch helps clear bathrooms fully after use. Ask your electrician to fit one.
Can I install it vertically?
Most inline fans work in horizontal or vertical ducts. Check the airflow arrow and the model instructions.
How do I clean it?
Switch off the power, open the housing or remove a duct section, then wipe the blades and housing.
Do you deliver outside Nairobi?
We supply customers across Kenya. We also serve buyers in Uganda, Tanzania, Zanzibar, Rwanda, Burundi, DR Congo, Ethiopia and South Sudan. Delivery details come with your quote.
How do I get a price?
Request a quote or message us on WhatsApp with the quantity. We reply with current prices and availability.
Where can I buy inline duct fan 150mm in Kenya?
Buy it from Sparks Plumbing Experts Ltd at KCB Building, Enterprise Road, Industrial Area, Nairobi. We are open Monday to Friday, 8 am to 5 pm, and Saturday, 9 am to 12 noon. You can also order by phone or WhatsApp on 0726 086 895. We deliver across Kenya and to Uganda, Tanzania, Zanzibar, Rwanda, Burundi, DR Congo, Ethiopia and South Sudan.
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Inline duct fan price in Kenya
Prices vary with size, housing material and airflow. Send the size and quantity for a quote.
Inline fan vs extractor fan
A wall or window extractor fan sits at the grille in the room. An inline fan sits inside the duct, out of sight, and can serve more than one grille.
How to size an extractor fan
Multiply the room volume by the air changes per hour you need. For example, a 15 m³ bathroom at 8 air changes needs about 120 m³/h.
150mm vs 100mm duct fan
A 150mm fan moves more air than a 100mm fan, so it suits larger rooms, several grilles or longer duct runs.
Mixed flow inline fan
A mixed flow fan combines axial and centrifugal action, which helps it keep airflow up against duct resistance.
Inline fan wiring with a timer
An overrun timer keeps the fan running for a few minutes after the light goes off. A qualified electrician should wire it.
How to reduce duct fan noise
Use rubber mounts, a short flexible connector, a duct silencer and smooth ducting to cut vibration and air noise.
Flexible vs rigid ducting
Rigid ducting has lower resistance and lasts longer. Flexible ducting is easy to fit but should be pulled straight and kept short.
Bathroom ventilation requirements
Building codes set minimum extraction rates, which vary by country and building type. Check your local requirements with your consultant.
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