Arabic grill and barbecue restaurants
Charcoal grills and mangal stations produce sparks and heavy smoke. A mist line over the filters is the first thing to discuss with your consultant.
Water mist extraction hoods · SUS304
Water Mist Hood in Dubai: How It Works and When You Need One
A water mist hood is a stainless steel extraction hood with a manifold of fine water nozzles built into the canopy. The mist cools the exhaust, wets grease and catches sparks from solid-fuel cooking such as tandoors and charcoal grills. FIAMMA can fabricate its SUS304 hood with the manifold planned in; approval stays with your consultant and Civil Defence.
Search for a water mist hood in the UAE and you will find a lot of product pages that say the same three things: stainless steel, nozzles, Civil Defence. What they rarely explain is what the mist actually does, which of your appliances really call for it, and how it differs from the fire suppression system your consultant may already have specified.
This page is written for the person who has to decide. It covers how a mist hood works, which cooking equipment pushes you towards one, how it compares with a standard baffle hood and with a separate suppression system, what to ask a supplier, and how to keep it working. For the basics of hood sizing and airflow, start with our guide to commercial kitchen hoods.
How does a water mist hood work?
A water mist hood is an ordinary extraction hood with one extra system built in: a pipe manifold carrying fine spray nozzles, normally positioned in the canopy over the filter bank and near the duct collar. When the system runs, a fine mist of water is released into the air stream leaving the cooking line.
What that mist does depends on the design, but three effects are usually described:
- Cools the exhaust air, which lowers the temperature of what reaches the filters and the duct.
- Wets grease and settles sparks and embers, which matters over open flame and solid fuel, where hot particles can travel up into the hood.
- Washes the filters, in designs that include a wash or rinse cycle, so grease is carried to the drain instead of building up on the baffles.
Which cooking equipment calls for a water mist hood?
The usual trigger is solid-fuel or very high-heat cooking, where sparks and embers can be pulled into the hood and into the duct behind it. In UAE kitchens that most often means:
- Tandoor ovens, whether clay and charcoal or gas-fired, because they throw heat and embers straight up the flue.
- Charcoal grills and mangal stations, common in Arabic grill and barbecue restaurants.
- Wok stations, where very high gas output and flaring oil put a heavy load on the hood.
- Open-flame charbroilers and wood-fired equipment, which sit at the top of the airflow table in our hood sizing guide.
- Vertical grills such as a shawarma machine in a high-volume outlet, depending on fuel and layout.
Water mist hood vs standard baffle hood vs separate suppression system
These three are often described as alternatives, but they do different jobs and are sometimes combined. This table sets out what each one does, what it adds, and what you still need to confirm.
| Option | What it does | What it adds | Things to confirm |
|---|---|---|---|
| Standard baffle hood | Captures heat and grease, separates grease through removable baffle filters, and passes air to the duct. | Simple build, low running cost, easy filter cleaning. | Duty class and airflow for the appliances below. Whether your consultant requires suppression in addition. |
| Hood with integrated water mist | Does everything a baffle hood does, plus a mist line in the canopy that cools the exhaust and wets grease and sparks. | Extra protection at the filters and collar for solid-fuel and high-heat cooking. Pipework planned into the hood. | What the mist is accepted as (capture, suppression or both). Water supply, drain and control requirements. Authority acceptance. |
| Hood with separate suppression system | A baffle hood fitted with a dedicated fire-suppression system, commonly a wet-chemical system with its own tank, pipework, nozzles and detection. | A purpose-designed system for cooking fires, with its own detection and shut-off arrangements. | Who designs and certifies it, how it interlocks with gas and fan shut-off, and its service and inspection schedule. |
Where does a water mist hood fit in the Civil Defence conversation?
In the UAE, commercial cooking hoods and their ducts are normally reviewed as part of the fit-out approval, and designs commonly follow the principles of NFPA 96. How much suppression is expected over a tandoor or charcoal grill, and in what form, is a matter for your fire consultant and Civil Defence. It is not something a hood supplier can settle for you, and it can differ between emirates, free zones and building types.
The practical point is to avoid two opposite mistakes. One is assuming a mist hood replaces a separate suppression system because the brochure says so. The other is paying for both without asking whether the authority would accept one. Put the question to your consultant with the appliance list and fuel type in front of them, and get the answer in writing before the hood is fabricated.
The FIAMMA hood is designed with UAE Civil Defence expectations in mind, but approval of any suppression arrangement rests with the authority, not with the fabricator.
What should you ask a water mist hood supplier?
Competitor figures for mist hoods contradict each other, even on the same page, so do not compare brochures by headline numbers. Ask for the design's own figures in writing, and use this list:
| Ask | Why it matters |
|---|---|
| What is the mist for: grease and spark capture, fire suppression, or both? | It decides how the authority will treat the hood and whether a separate system is still needed. |
| What water supply does the design need (pressure, flow, pipe size) and where does it connect? | Your plumber must provide it, and the figures vary from design to design. |
| Where does the drain connect, and what does it carry? | Mist water that falls out carries grease. It needs a proper drain route, and often a grease trap downstream. |
| What controls and power does it need, and does it interlock with the exhaust fan? | A solenoid valve and control box are typical. The interlock must be agreed with the MEP contractor. |
| How many nozzles, where are they, and how are they reached for cleaning? | Nozzles that cannot be reached get skipped at the monthly check. |
| Are removable baffle filters still fitted? | Grease still needs to be separated. Ask how many filters sit in the hood and how they lift out. |
| What material and gauge is the hood, and are the seams welded? | A wet hood needs a fully welded body. The FIAMMA hood is SUS304 at 1.2 mm. |
| What documents can you supply for submission? | Drawings, nozzle layout and specification sheets save weeks of back-and-forth with the authority. |
How do you maintain a water mist hood?
A mist hood is a normal hood plus a small water system, so the routine is the hood routine with a few extra checks. The frequencies below are typical practice. Follow the supplier's manual where it differs.
- Daily: wipe the visible stainless and empty the grease cup. Check that the drain is running clear.
- Weekly, or more often on heavy lines: remove the baffle filters and wash them. A wet hood with clogged filters loses capture quickly.
- Monthly: inspect the nozzles for blockage or mineral scale, look at the manifold joints for drips, and run the control cycle as the manual describes.
- On a schedule set by your grease load: have the duct inspected and cleaned. Mist does not remove the need for this.
- Always: keep a short log of checks, so the next inspection is quick and your consultant can see the routine is real.
How FIAMMA builds a mist manifold into the hood
FIAMMA's custom extraction hood can include an integrated water mist manifold, planned in during fabrication so that the nozzles sit over the filter bank and duct collar rather than being added afterwards. The hood is SUS304 at 1.2 mm with removable baffle filters and a welded drip channel, and it is custom-fabricated to your cooking line, from 1.2 m to 6 m or more.
- Send the equipment list with the fuel for each appliance. Mark any tandoor, charcoal grill or wok station.
- We confirm the duty class and hood length for each line, and flag which stations to raise with your fire consultant.
- You receive a drawing showing collar position, filter count, manifold and nozzle layout, and the water and drain points.
- Your consultant and MEP contractor review it against the duct, fan and any Civil Defence comments. Changes are cheap at this stage.
- The hood is fabricated and delivered. Water, drain, power and the fan interlock are connected by your MEP team.
- Handover. The filter and nozzle routine is explained to the kitchen team.
Where it is used
Indian and Pakistani restaurants with a tandoor
A tandoor sends heat and embers straight up. The hood and its mist line need planning together with the oven position.
Asian kitchens with wok stations
High gas output and flaring oil load the hood heavily, so duty class and mist options both matter.
Hotel kitchens with a live grill station
A single solid-fuel station next to ordinary lines needs its own hood section, so the rest of the kitchen is not designed around it.
Food courts and open kitchens
Cooking in front of customers raises the profile of smoke and sparks. Hoods here also need to look tidy in stainless.
Benefits
Planned in, not bolted on
The manifold is drawn into the hood during fabrication, so the nozzles sit where they should and the pipework is neat.
Cooler exhaust at the filters and duct
Mist cools the air leaving the cooking line, which is the point of the system over high-heat appliances.
Still an easy-clean hood
Removable baffle filters and a welded drip channel keep daily cleaning short.
Made to your cooking line
Length, collar position and manifold layout follow your drawing, with no catalogue size to adapt around.
Clear about approvals
We tell you what to raise with your consultant and Civil Defence rather than promising an outcome that belongs to them.
Related products
Equipment from the FIAMMA range that goes with this page.
Stainless Steel Kitchen Extraction Hood with Water Mist Suppression
Heavy-duty SUS304 stainless steel extraction canopy engineered for high-heat commercial cooking lines. Integrated baffle grease filters, welded drip channels, and an optional built-in water mist fire suppression manifold contain grease-laden vapor and suppress flare-ups at the source, keeping kitchens compliant with UAE Civil Defence fire-safety codes.
Custom Fabricated EquipmentView details →
Commercial Gas Cooking Range
Heavy-duty open-burner gas cooking range built on a fully welded SUS304 stainless steel frame for continuous high-volume service. Cast-iron pan supports, independent burner valves, and an optional oven base combine high-heat output with the durability commercial kitchens demand day after day.
Cooking EquipmentView details →
Stainless Steel Grease Trap Interceptor
Under-sink or in-line stainless steel grease trap engineered to intercept fats, oils, and grease before wastewater reaches municipal drainage. Baffled internal chambers slow flow to separate FOG from water, helping commercial kitchens meet UAE municipality drainage compliance and avoid blocked lines.
Washing Equipment and Sink UnitView details →
Frequently asked questions
What is a water mist hood?
It is a commercial extraction hood with a manifold of fine water nozzles built into the canopy. The mist cools the exhaust and wets grease and sparks. It is most often discussed for tandoor, charcoal, wok and other high-heat or solid-fuel cooking.
How is a water mist hood different from a normal exhaust hood?
A normal baffle hood captures heat and grease and passes air to the duct. A mist hood does the same and adds a water line and nozzles in the canopy. That means extra plumbing, a drain and controls to plan, and extra checks in the maintenance routine.
Is a water mist hood mandatory in Dubai?
It depends on your cooking equipment, your fire consultant's design and the authority's requirements. It is not something we can decide for you. Ask your consultant early, especially if you have a tandoor, charcoal grill or wok station.
Does a water mist hood replace a fire suppression system?
Do not assume so. A separate wet-chemical system is designed and certified specifically for cooking fires, while a mist line may be accepted as capture, as suppression, or both depending on the design and the authority. Get the answer in writing from your consultant.
Do water mist hoods still need grease filters?
Yes in most designs. Our hood keeps removable baffle grease filters, and the mist works alongside them. The filters still need regular washing.
How much water does a mist hood use?
It varies with the design, and competitor figures disagree, so we do not quote a single number here. Ask the supplier for the design's supply pressure and flow in writing, and make sure your plumber can provide it.
How often should nozzles and filters be checked?
Baffle filters are normally washed weekly, or more often on heavy lines. Nozzles are typically checked monthly for blockage and scale. Follow the supplier's manual where it differs, and keep a simple log.
Can a mist line be added to an existing hood?
Sometimes, but it is usually cleaner to plan it into the hood during fabrication so the nozzles sit over the filters and collar. If you have an existing hood, send us its drawing and we can say what is realistic.
What do I need to send to get a quotation?
Your equipment list with the fuel for each appliance, the kitchen layout (PDF or CAD if you have it) and any comments from Civil Defence or your fire consultant. Send them through the contact page or on WhatsApp.
Do you supply water mist hoods outside Dubai?
Yes. We supply across the UAE, including Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah, Fujairah and Umm Al Quwain.
Related guides and solutions
Planning a tandoor, charcoal or wok line?
Send your equipment list with the fuel for each appliance. We will draw the hood with the mist manifold planned in and tell you what to confirm with your consultant.
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