Ventilation

What is mechanical ventilation?

Mechanical ventilation uses fans to bring fresh air in and push stale, hot, moist or smoky air out. Axial fans move large volumes of air at low pressure, while centrifugal fans and blowers build more pressure, so they suit long ducts and filters.

A good system balances supply and extract air. Therefore, fans are chosen by the air volume needed, often from air changes per hour, and by the duct resistance they must overcome.

How to choose a ventilation fan

• Work out the air volume needed, for example room volume times air changes per hour.
• Use axial fans for free air and short runs, and centrifugal or inline fans for ducts.
• Check noise levels for offices, boardrooms and homes.
• Choose single or three phase motors to suit your supply.
• Plan make-up air so extracted air can be replaced.
• Add grilles, louvers and backdraft shutters to finish the system.

Applications of ventilation fans

1. Bathrooms and toilets. Removing moisture and odours with extractor fans.
2. Commercial kitchens. Extracting heat, smoke and grease with hoods and kitchen fans.
3. Offices and boardrooms. Supplying fresh air quietly with inline duct fans.
4. Factories. Removing heat and fumes with industrial axial and centrifugal fans.
5. Warehouses. Moving large air volumes with roof ventilators and big fans.
6. Shop entrances. Keeping out dust and insects with air curtains.
7. Laboratories. Extracting fumes with chemical-resistant fans.
8. Poultry and livestock houses. Cooling and ventilating animal housing.
9. Car parks and basements. Clearing exhaust fumes.
10. Heat recovery. Recovering heat from extract air with heat recovery units.

Why choose Sparks Plumbing Experts

1. Fans in several sizesInline duct fans and box fans come in a range of diameters, so you can match airflow to the room.
2. PVC and metal optionsChoose corrosion-resistant PVC for humid rooms or metal housings for tougher conditions.
3. Grilles and diffusers tooDiffusers, louvers and grilles finish the system you are ventilating.
4. Sizing guidanceTell us the room size and duct route, and we help you pick a fan with enough airflow.
5. 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.
6. Quotes your wayAsk for prices by phone, WhatsApp, email or the online quote form, whichever suits you on site.
7. Over 1,600 products in one placeOur catalogue covers 55 categories, so one supplier can handle most of your parts list.
8. Help choosing the right partSend a nameplate photo, a drawing or the old part, and we help you match size and specification.
9. Single items or project quantitiesWe price a single replacement part just as readily as a full site order.
10. Supply across East AfricaWe serve customers across Kenya, and we also supply buyers in Uganda and Tanzania.

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