The answer in two lines
The rule is a hood at least as wide as the hob: a 60 cm hob suits a 60 cm or wider hood, and a 90 cm hob suits a 90 cm or wider hood. Ducted (vented outside) is best for odours and moisture; recirculating (carbon filter) is the option for flats with no route outside and needs filter changes. Mounting height and extraction power come from the maker's sheet.
Planning a kitchen and unsure between a 60 and a 90 cm hood, a chimney or another type, ducted or filtered? This guide from Tawredaat (توريدات), an Egyptian supplier of electrical and finishing materials in Cairo and Giza, answers using the named maker guides listed at the end.
A note on numbers: every figure comes from a named maker or guide, mostly UK and European. Makers differ on some figures (such as mounting height), so we show them side by side; the final reference is always the sheet for the hood you buy. We found no published Egyptian source for these figures.
60 cm or 90 cm hood? Match the hood to the hob
The common rule: the hood should at least cover the hob. Bosch advises matching or exceeding hob width, especially with induction: a 60 cm hob with a 60 cm or wider hood, a 90 cm hob with a 90 cm or wider hood. Samsung says the hood should "at least match the length of your hob", and Caple says wider where possible, at the very least the same width.
| Source | What it says about hood width |
|---|---|
| Bosch | Match or exceed hob width (60 hob: 60 or wider; 90 hob: 90 or wider) |
| Samsung | At least match the hob length |
| Caple | Wider than the hob where possible, at least the same. From its table: hob up to 60 cm, hood 60-70 cm; up to 90 cm, hood 90-110 cm |
| Bora | Extend 5 to 10 cm beyond the hob on each side |
- ✔ 60 cm hob: a 60 cm hood is the minimum; slightly wider is better (Bosch, Caple).
- ✔ 90 cm or a large multi-burner hob: a 90 cm hood, since a narrower one does not cover it.
- ⚠ For induction hobs, Caple recommends a hood wider than the hob.
What is a chimney hood and what are the other types?
Per Samsung, a chimney hood is wall-mounted with a canopy and a chimney column, and comes in ducted and recirculating versions. Bora says wall-mounted hoods are "fitted directly onto the wall above the hob", are easy to install but "limit the design options", are not suitable for a cooking island (which uses a ceiling or hanging hood) and need a load-bearing wall. Samsung describes telescopic hoods as best for smaller kitchens and lower ceilings.
| Type | What the sources say |
|---|---|
| Chimney | Wall-mounted canopy and column; ducted or recirculating (Samsung) |
| Telescopic | Smaller kitchens and lower ceilings (Samsung) |
| Island / ceiling | For a hob in the middle of the kitchen; needs ceiling height and a solid fixing point (Bora) |
Ducted or recirculating hood?
| Ducted | Recirculating | |
|---|---|---|
| How it works | Takes air in and releases it outside through a duct (Samsung) | Takes air in, filters it and returns it to the room (Samsung) |
| Performance | Most efficient at removing steam and odours (Cookers & Ovens) | Used when ducting outside is not possible (Cookers & Ovens); humidity is not reduced so ventilate (Caple) |
| What it needs | A duct route to an outside wall | Carbon filters to replace; the recirculation kit is sold separately on some models (Samsung, Siemens) |
| Filters | Metal grease filter | Carbon filter: 4-6 months (Samsung), 6 months (KitchenAid), 6-9 months (Caple), yearly (Bob Vila). Follow your model's manual |
- ✔ Outside wall and a reasonable route: ducted is best for odours and moisture (Bosch, Cookers & Ovens).
- ✔ No route outside: recirculating is a practical choice in flats (Bosch); use good charcoal filters and change them regularly.
- ⚠ Caple does not recommend recirculation for powerful gas hobs rated 11-18 kW, so check your hob.
How much extraction power do I need?
The rule published by Bosch, Samsung, Caple and Cookers & Ovens: kitchen volume (length × width × height in metres) × 10 = required extraction. Caple says the hood should change the room air 5 to 10 times an hour; Bora says 6 to 10. Cookers & Ovens example: a 4 × 3 × 2.5 m kitchen is 30 m³, so 300 m³/h minimum. Choose a hood whose rated figure on the maker sheet is above that.
Ducting (ducted hoods): examples from maker guides: Cookers & Ovens says duct diameter at least 120 mm, ideally 150 mm; Caple says 125 mm up to 400 m³/h and 150 mm above; each 90° bend cuts the allowable run by 1 m; keep runs under 3 m where possible; slope the duct slightly down towards the outside wall (about 2°) so condensation does not run back. Avoid any reduction in duct cross-section.
How high above the hob should the hood go?
The sources do not agree on one figure, which is normal because it depends on the hood model and hob type:
| Source | Electric / induction | Gas |
|---|---|---|
| Bosch | 45 cm | No figure (see maker instructions) |
| Samsung | At least 650 mm | At least 750 mm |
| Siemens | 55-70 cm | At least 65 cm |
| Caple | About 650 mm | About 760 mm |
- ✔ The right figure is in your model's installation manual. Caple says exceeding the maximum reduces effectiveness, and ignoring the minimum can damage heat-sensitive parts of the hood.
- ✔ Ceiling height matters; a telescopic hood helps with a low ceiling (Samsung).
- ⚠ With gas, the wrong height is a safety risk (Bosch).
How do I run and maintain the hood properly?
- ✔ Switch it on before cooking: Bob Vila advises turning it on before you start and leaving it on for 10 to 15 minutes after you finish.
- ✔ Speed: Bob Vila says low speed is enough for one or two burners; use high when all burners are on.
- ✔ Metal grease filter: Bob Vila says clean about every 3 months; KitchenAid says monthly for daily cooking and about every 3 months for lighter use, with warm soapy water, and some models are dishwasher-safe. Check your manual.
- ✔ Carbon filter (recirculating): cannot be cleaned; replace it.
- ⚠ Electrical: a qualified electrician should connect the hood and place the socket; switch off at the breaker before any maintenance, and do not rely on generic figures from the internet.
Chimney hoods available at Tawredaat
Currently available: Turboline Air Line Plus 60cm Decorative Chimney Hood - Silver (60 cm), Turboline Air Line Plus 90cm Decorative Chimney Hood - Black (90 cm) and Turboline 90cm Decorative Chimney Hood - Silver - Model BCH-90 (90 cm). Our product pages say only that the 60 cm width is "optimized for standard kitchen layouts", the Air Line Plus 90 width suits "standard and large-scale cooktops", and the BCH-90 has a 90 cm canopy for wall-mounted configurations. The pages do not state extraction power, ducted or filter operation, or noise level, so ask before buying. Browse all chimney and decorative hoods. For the rest of the kitchen: how to choose a bathroom and kitchen mixer.
Frequently asked questions
60 cm or 90 cm hood?
Match the hob: Bosch advises a hood equal to or wider than the hob, so a 60 cm hob suits a 60 cm or wider hood and a 90 cm hob suits a 90 cm or wider hood.
How do I calculate extraction power?
Kitchen volume in m³ × 10 (Bosch, Caple, Cookers & Ovens); example: a 30 m³ kitchen needs 300 m³/h.
Ducted or recirculating?
Ducted is best at removing steam and odours (Cookers & Ovens); recirculating is a solution when there is no route outside (Bosch), with carbon filters changed regularly.
How high should the hood be?
Makers differ: Bosch 45 cm for electric/induction; Samsung 650 mm electric and 750 mm gas; Caple about 650 and 760 mm. Follow your model's manual.
When do I switch the hood on?
Before cooking, and leave it for 10 to 15 minutes after (Bob Vila).
Do you deliver to every governorate?
Tawredaat delivers in Cairo and Giza only.
Choosing a kitchen hood?
See chimney hoods at Tawredaat, with delivery in Cairo and Giza.
About Tawredaat: Tawredaat (توريدات) is an Egyptian supplier of electrical and finishing materials, serving homeowners, companies and contractors in Cairo and Giza. Questions? See our FAQ.
English summary: Pick a kitchen hood at least as wide as your hob (60 cm hob: 60 cm or wider; 90 cm hob: 90 cm or wider, per Bosch). Ducted hoods vent outside and are best for steam and odours; recirculating hoods use carbon filters when there is no outside route. A common sizing rule is kitchen volume in m³ multiplied by 10 for m³/h. Mounting height differs by maker, so follow your model's installation sheet; a qualified electrician should connect it.
Sources
- Bosch, Hood dimensions (width vs hob, 45 cm, 10 air changes) — bosch-home.co.uk/en/c/spotlight/blt99840951759e63ed/specials/hood-dimensions
- Samsung UK, Cooker hood buying guide (types, 650/750 mm, carbon filter 4-6 months) — samsung.com/uk/home-appliances/learn/hoods/
- Siemens Home (BSH), Hood buying guide (55-70 cm, gas 65 cm, ducted/recirculating) — siemens-home.bsh-group.com/uk/appliances/cooking-baking/ventilation/hood-buying-guide
- Caple, Extraction Guide 2025 (hood width, duct diameter, bends, carbon filter 6-9 months, 650/760 mm) — caple.co.uk/wp-content/uploads/2025/10/Extraction-Guide-2025.pdf
- Cookers and Ovens, Do I need a ducted or recirculating hood? (volume x 10, 300 m³/h example, 120/150 mm duct) — cookersandovens.co.uk/blog/ducted-or-recirculating-hood/
- Bora, Types of range hoods (5-10 cm each side, 6-10 changes, wall and island hoods) — bora.com/en-au/guide/types-of-range-hoods-what-are-the-differences-and-how-do-you-find-the-right-model
- Bob Vila, How to use range hoods (before cooking, 10-15 minutes, metal filter 3 months) — bobvila.com/articles/how-to-use-range-hoods
- KitchenAid, Range hood maintenance (grease filter, carbon filter 6 months) — kitchenaid.com/pinch-of-help/major-appliances/range-hood-maintenance.html
- Tawredaat product pages (title and description only) — tawredaat.com/collections/chimney-decorative-hoods
