Roof fans extract hot air and fumes from buildings at a steady, powered rate.
They suit factories and warehouses. Confirm airflow and supply.
What are roof fans?
Roof ventilators remove hot air that collects under roofs. Roof cyclones, also called turbine ventilators, spin in the wind and as warm air rises, so they need no power. Powered roof fans extract air at a steady rate.
Removing roof heat cools buildings below. Therefore, they suit warehouses, factories, schools and churches.
Further reading
- Stack effect (Wikipedia)
- Ventilation in buildings (Wikipedia)
- Roof and attic fans (Wikipedia)
Key terms explained
- Turbine ventilator
- A wind and heat driven spinning roof vent.
- Stack effect
- Warm air rising and escaping at high level.
- Airflow (m3/h or CFM)
- How much air a fan moves. 1 m3/h is about 0.59 CFM.
- Static pressure
- The resistance a fan must push against from ducts, filters and grilles, in pascals (Pa).
- Air changes per hour (ACH)
- How many times the air in a room is replaced each hour.
Features and benefits
- Removes roof heat.
- Powered and non-powered types.
- Weatherproof design.
- Low maintenance.
Technical specifications
| Product | Roof fans |
|---|---|
| Size and airflow | Confirm with quote |
| Power supply | Confirm voltage and phase with quote |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
Sizes, grades and ratings depend on stock and model. Tell us what you need, and we will confirm before you order.
Applications of roof fans
- Warehouses. Removes heat under roofs.
- Factories. Improves comfort.
- Schools. Cools halls and classrooms.
- Churches. Ventilates large halls.
- Poultry houses. Removes heat and moisture.
- Workshops. Clears fumes.
- Homes. Roof space ventilation.
- Stores. Protects stock from heat.
How to choose and install
- Space units evenly along the ridge.
- Provide low-level air inlets.
- Seal flashing to prevent leaks.
- Use powered fans where steady airflow is needed.
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, and we also supply buyers in Uganda and Tanzania.
Related products and accessories
Browse more: Ventilation · HVAC · Electricals · Louvers.
Ordering from Sparks Plumbing Experts
We supply customers across Kenya, and we also serve buyers in Uganda and Tanzania. 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 details do you need to quote roof ventilators?
Tell us the space size and use, duct size and length, power supply, or the model you are replacing. A photo of the old part, a nameplate or a drawing also helps. Then call or WhatsApp 0726 086 895, or use the quote form on this page.
Do you deliver roof ventilators outside Nairobi?
Yes. We supply customers across Kenya, and we also serve buyers in Uganda and Tanzania. Delivery or courier arrangements are agreed when you confirm the order.
How much does a roof ventilator cost in Kenya?
The price depends on the type, size, motor and quantity. Therefore, send your list with a quote request and we will reply with current figures.
Do roof cyclones need electricity?
No. Wind and rising heat turn them.
Will they leak in rain?
Not when flashed and sealed correctly.
How many do I need?
Send roof size and use for a suggestion.
Are powered roof fans noisy?
Some noise is normal. Choose speed carefully.
Do they need maintenance?
Check bearings and fixings yearly.
People also search for
roof cyclone vs roof fan
A cyclone needs no power. A fan gives steady airflow.
how many roof ventilators
It depends on roof area and heat. Send building size.
roof ventilator leaking
Check flashing and sealing.
Roof ventilators price in Kenya
Prices change with size, model and quantity. Request a quote from Sparks Plumbing Experts for current figures.
axial vs centrifugal fan
Axial fans move lots of air at low pressure. Centrifugal fans push against ducts and filters.
how to size a ventilation fan
Room volume times air changes per hour gives the airflow. Then allow for duct resistance.
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