Grease filters in a restaurant kitchen look like a small item on the cleaning list, but they decide how much of the rest of the extraction system you touch every week. When they load up, airflow through the hood drops, the line gets hotter and smokier, and grease that should have stopped in the filter keeps travelling into the duct. Before anyone buys a machine to help with this task, it is worth being precise about which part of the job needs equipment and which part still needs a person with a bucket.
Start with what is actually being cleaned
There are at least four different surfaces in the extraction path, and each one behaves differently once grease has cooled on it.
A mesh or baffle grease filter is metal, usually removable, and it has a lot of small edges. Fresh grease wipes away; grease that has been baked on by hot exhaust air turns into a dark varnish that holds its shape. This is the item most kitchens soak in a hot detergent bath, and no machine replaces that step — the machine is what handles the grease after it has been loosened.
The hood interior, the fan housing and the duct are the harder cases. They cannot be soaked, they are often vertical or overhead, and access depends on the layout of the kitchen. Cleaning them properly is a specialised job, and if the deposit on the duct is thick, that work should be quoted by a contractor rather than attacked with equipment from the supply cupboard.
The surfaces around the cooking line — the exterior of the range, the backsplash, the shelf edges under the hood — are where daily effort pays. Grease here is a film rather than a crust, and it collects dust and turns tacky. Left alone, it becomes the first thing a hygiene inspector photographs.
The equipment list, item by item
A workable set for filter and hood-surface cleaning is short, and most kitchens already own half of it:
- A hot detergent sink or bath deep enough to lay the filters flat, with a rack or stand so the mesh does not sit on the bottom.
- A degreasing detergent suitable for the material of the filter, dosed to the mixing ratio on the container rather than by eye.
- A brush with stiff but not wire bristles for the mesh faces, used along the pattern of the mesh, not across it.
- A source of hot water for rinsing, and a place to drain the filters that keeps grease out of the floor drain.
- A heat-based machine for the surfaces that stay in place — the hood exterior, the panels, the floor directly under the line — where a wet cloth smears rather than lifts.
- Absorbent cloths, a scraper with a plastic edge for flat panels, and a container for the grease-water that comes off all of it.
If you are reading this as a checklist to hand to a supplier, the last item is the one that changes the quotation: how much of the job is on removable parts, and how much is fixed plant in a working kitchen.
Where a steam machine earns its place
Hot water from a tap is limited by how hot it can get before someone cannot hold the hose. A commercial kitchen steam cleaning machine produces heat well above that, and heat is what turns a hard grease film into something that can be lifted off a vertical surface with a cloth. That matters most on the parts that cannot be taken to a bath: the outside of the hood, the front of the range, the tile and stainless behind the line, the floor edge where the grease-water has been collecting.
Two modes are worth asking about when you compare machines. Dry steam carries more heat with less water, so it loosens a film without flooding the surface, and the area dries fast enough that service can restart. Wet steam carries more water with the heat, which suits heavier deposits and horizontal surfaces where the run-off can be controlled. A restaurant kitchen grease cleaning routine that only ever uses one mode tends to be either slow or wet; switching between them is what makes the same machine useful on both a greasy panel and a floor joint.
Be clear about the limit: a steam machine assists the surfaces you can reach and control. It does not turn a mesh filter clean on its own, and it is not a substitute for a duct cleaning when the deposit inside the duct is what has grown.
What to specify, in plain terms
When you ask a supplier for central kitchen cleaning equipment, the useful specification is a short set of questions about your own kitchen, answered honestly:
- Where will the machine stand, and is there a 220 V supply within reach of the cable?
- Is there a hot-water tap to feed it, and is the water in your area hard enough that scale becomes a maintenance item?
- How far from the machine to the far end of the hood run — this sets the hose and wand length you need.
- Is there a fixed water inlet and drain point, or does the unit have to be moved and filled by hand?
- Who works in the kitchen while cleaning happens, and can the line be closed for the length of time the job takes?
A fixed unit near the cooking line suits a kitchen that cleans the same surfaces every night. A mobile unit suits a site where one machine also has to travel to the servery, the store or the back entrance. A supplier who has seen your layout can answer this; a supplier working from a brochure will simply quote you the biggest model.
A machine that fits this description
PowerDe is a intelligent cleaning equipment manufacturer in Shenzhen, and its Fixed Steam Cleaning Machine PowerDe HW02 is the model in that range worth reading the specification sheet for. As listed by the manufacturer, it runs on 220 V, has a 6 kW heating element, produces steam at about 160 °C and vapour pressure at 0.8 MPa, holds an 80 L tank made of SUS304 stainless steel, takes tap water through a 1/2 inch internal-tooth inlet, and switches between dry steam, wet steam and a vacuum function. Its footprint including handles is 1,200 by 800 by 1,200 mm.
Those numbers describe capacity, not a result in your kitchen. Read them against your own constraints: 220 V means an electrical check before installation, and the cable must reach your working position without running across a wet floor. A fixed machine of that size needs somewhere permanent to stand. If any of that does not fit the building, the correct answer is a different model or a different layout — not a compromise at the socket.
The routine, and how often it runs
Filters and hood surfaces are usually on two clocks. The removable filters are cleaned on a schedule you set — weekly in a busy kitchen, less often if the menu is light — and the schedule is right when the filters come out with a deposit that can be removed in a few minutes rather than half an hour of scrubbing. The fixed surfaces are wiped down as part of closing, and given the heat treatment on a longer cycle.
Airflow is the honest test. If the line pulls badly, check the filter before you blame the fan, and if the filter is clean and the pull is still poor, the restriction is further along the extraction path, which is a different job on a different bill.
Write the routine down on one page: what comes off, what gets soaked, what gets heated, what gets rinsed, where the grease-water goes, and who signs it off. Grease-water from filter baths and rinse water should be collected and disposed of the way your site handles fatty waste, not run straight into a floor drain. Any electrical work, including adding a socket for a new machine, belongs to a qualified electrician.
Before you order anything
Send the supplier three things: a photo of the hood from the cooking side, a photo of one filter lying flat, and the answer to the five questions above. If you want the layout assessed rather than guessed, that is what customized steam cleaning equipment requests are for.
Then run one cycle on a small area before you commit to the whole line. Heat a short section of hood exterior and a strip of floor under the range, and time what it takes to finish the surfaces so they are clean to the touch rather than smeared. That timing, not a datasheet, is what tells you whether the machine fits the closing routine you actually have. If it does not, talk to the supplier with those observations before the trial order becomes a permanent one. Write to the PowerDe team at https://www.powerde.net/contact/ with those observations.
