A restaurant is two buildings under one roof. In the dining room, guests decide within thirty seconds whether the room feels comfortable. In the kitchen, heat is produced continuously at a density that almost no other commercial space comes close to. Most cooling complaints in this segment come from treating the whole site as a single load.
For a distributor, that split is the selling point: quote the dining room on its own numbers, separately from the kitchen.
Two loads, two conversations
The dining area is a comfort load. It changes with the hour: full at lunch, quiet at four in the afternoon, full again at night. Doors to the street open constantly, and in tropical markets the outside air that comes in is already warm and humid.
The kitchen is a process load. Cooking equipment releases heat all day, and the exhaust hood removes a large volume of air that has to be replaced. That make-up air is usually pulled in through the dining room and through every gap in the building, which means the dining split is quietly fighting a load nobody wrote down.
Two consequences follow. First, size the dining room with the kitchen doors and the make-up path in mind, not as an isolated box. Second, keep the two zones on separate units whenever the layout allows: separate control, separate maintenance, and one failure does not shut down the guest area.
What a split can and cannot do for a kitchen
A split indoor unit is a comfort appliance. It is not designed to live in grease-laden air, and a unit that ingests cooking vapour will show it: a sticky coil, a blocked drain, a smell that returns before the end of the month. In food preparation areas, refer to the project engineer on whether a split unit is suitable at all, and confirm the model with the supplier.
Where units are used near a kitchen, three choices extend their life:
- Keep them out of the direct hood plume and away from frying lines.
- Choose models with filters and coils that a technician can reach and clean in minutes.
- Plan a cleaning interval that matches the kitchen, not the catalogue.
Outdoor unit placement is the most common mistake
On restaurant projects, more callbacks are caused by the position of the outdoor unit than by the indoor unit. The exhaust plume is a stream of hot, greasy air leaving the building; an outdoor unit placed inside that stream reads ambient temperatures far above the real weather and loses capacity exactly when the kitchen is busiest.
The rules are simple and cheap to follow:
- Never in the exhaust plume or under a hood discharge.
- Shade where possible, with free airflow in front and behind.
- Clear service access, because these units will be cleaned more often than residential ones.
Corrosion: salt air and cleaning chemicals
In coastal markets, from the Caribbean to the Gulf of Guinea and the Pacific coast of Latin America, the combination of salt air and frequent washing attacks the coil and the casing. Where a site is within sight of the sea, ask the supplier what corrosion protection the model offers and confirm it per order. Rinsing the coil on a schedule is part of the maintenance contract, not an optional extra.
Sizing the dining room
Seat count is the fastest starting point, and surface area is the second check. Neither replaces a proper calculation: orientation, glazing, ceiling height, occupancy and the make-up air path all matter.
| Dining room | Starting capacity | What to check |
|---|---|---|
| Small cafe, up to 25 seats | 12K to 18K | Glazing, street door, kitchen opening |
| 40 to 60 seats | 24K to 36K | Make-up air path, ceiling height |
| Large hall or terrace enclosure | 36K cassette or floor standing | Zoning, air distribution, shade |
Confirm the declared capacity of the selected model with the sales team before the order is placed: the final number belongs to the project, not to a rule of thumb.
Electricity: peaks, phases and generators
Restaurant electricity is spiky. Kitchen equipment cycles on and off, the compressor starts while the fryer is heating, and in markets with weak grids the voltage moves with it. Confirm whether the board is single phase or three phase before selection, because that decision cannot be corrected after the container arrives.
Two declared features are worth putting on the quotation:
- Wide voltage range. The WN-EL12K from Hubei Wunuo Technology Co., Ltd is declared at 198-242V / 50-60Hz, with R32 refrigerant, an outdoor operating range of -15 C to +48 C and an airflow of 620 m3/h.
- Automatic restart. After a power cut the unit returns to its last state without a member of staff walking the room.
Drainage, cleaning and the routine that protects the margin
Condensate is the most common complaint in hot, humid markets, and it is also the easiest to prevent: correct fall, insulated pipe, and a drain pump where gravity is not available. Grease film on a filter is the second most common, and it is a scheduling problem rather than a technical one.
A simple service calendar, written into the supply agreement, covers espresso machines and dining rooms alike: filters monthly, coils quarterly, drains checked at every visit.
Service contracts: the recurring revenue
Restaurants run on tight margins and cannot afford a closed dining room, which is why a maintenance plan sells well here: two or three visits a year price a predictable cost and keep a relationship that outlives the equipment.
Model mix for a first container
- 12K and 18K inverter: cafes, bars, small dining rooms.
- 24K: medium dining rooms, service corridors.
- 36K cassette or floor standing: large halls, terraces, banquet spaces.
- Critical spare parts: electronic board, capacitors, NTC sensors, fan motors, remote controls.
Keep one platform across the container. One spare parts set then covers every capacity on site, and the technician learns a single diagnostic logic.
Choosing the manufacturer
Hubei Wunuo Technology Co., Ltd builds split systems for distributor and private label programmes, including wide voltage inverter platforms and outdoor units with a T3 option. One example from the catalogue: the WN-EL12K is declared at 198-242V / 50-60Hz, with R32 refrigerant, an outdoor operating range of -15 C to +48 C and an airflow of 620 m3/h. The WN-OU outdoor unit covers 9,000 to 36,000 BTU, with an IP24 rating and service ports on both the high and low pressure sides. Declared certifications (CE, CB, ROHS, ISO 9001) are confirmed per model and per order.
The useful question is not which unit costs less, but whether the factory ships the same specification on the third container as on the first. Confirm capacity, voltage version, refrigerant and packaging with the sales team: MOQ, lead time and price depend on model, quantity, branding and destination.
Fitting out a restaurant, a hotel kitchen or a chain of outlets? Contact us at inquiry@unitechgrupo.com or on WhatsApp at +86 159 2631 2664 for a specification focused quotation.