6 Aircon Risks to Check Before Opening an F&B Premises
Before opening an F&B premises, check six parts of the cooling setup. Test the planned load, exhaust effect, grease path, drainage and service access. Also plan how the outlet will react if a unit fails. This is not an exhaust or licence check.
By Team Snowflake | Updated 15 Sept 2026
What should be checked before the outlet opens?
Check the aircon as part of the operating setup, not as an isolated appliance. The units may run normally in an empty space and still lose ground once cooking, occupancy, doors, lighting and equipment add load.
The readiness decision should answer six questions: can the occupied zones cool, does another airflow system change that result, where will grease travel, will condensate drain, can the units be serviced and what happens if one fails during trading?
| Pre-opening question | Evidence to gather |
|---|---|
| Can the outlet hold comfort under planned use? | A run under a representative operating setup, with affected zones noted |
| Does kitchen airflow change the dining or prep areas? | Observation with the exhaust setup in its planned operating state |
| Can grease reach the return path or outdoor coil? | Layout and exposure check around returns, doors and discharge points |
| Can water clear under sustained runtime? | Drainage observation and access to the relevant route |
| Can the equipment be reached and isolated for service? | Confirmed access route and any trading restriction |
| Can operations respond to one failed unit? | Zone map, escalation contact and a practical operating fallback |
- Pre-opening question
- Can the outlet hold comfort under planned use?
- Evidence to gather
- A run under a representative operating setup, with affected zones noted
- Pre-opening question
- Does kitchen airflow change the dining or prep areas?
- Evidence to gather
- Observation with the exhaust setup in its planned operating state
- Pre-opening question
- Can grease reach the return path or outdoor coil?
- Evidence to gather
- Layout and exposure check around returns, doors and discharge points
- Pre-opening question
- Can water clear under sustained runtime?
- Evidence to gather
- Drainage observation and access to the relevant route
- Pre-opening question
- Can the equipment be reached and isolated for service?
- Evidence to gather
- Confirmed access route and any trading restriction
- Pre-opening question
- Can operations respond to one failed unit?
- Evidence to gather
- Zone map, escalation contact and a practical operating fallback
Which six cooling risks can disrupt trading?
Treat the six risks separately because each needs different evidence and may belong to a different repair or building scope.
1. The system has not been tested under the planned heat load
An empty fit-out can feel cool even when the operating outlet will not. Cooking equipment, people, lighting, open doors and warm stock can change how quickly each zone gains heat.
Run the installed setup under a representative condition and record which zones lose ground. Do not declare the system undersized from one warm moment; airflow, fouling, controls and heat rejection still need to be separated.
2. Kitchen exhaust changes the airflow balance
The kitchen exhaust and comfort aircon are separate systems, but they operate in the same premises. Extraction can change where replacement air enters and how air moves between the kitchen, prep and dining areas.
Observe the aircon with the exhaust setup in its planned operating state. An aircon contractor can record the effect on comfort cooling, but the kitchen exhaust itself belongs to the relevant ventilation trade.
3. Grease reaches coils and return-air paths
Grease can coat filters, evaporator coils and outdoor condenser fins exposed to cooking discharge. The cafe evaporator coil sludge case showed cooling fading despite recurring general servicing because deeper greasy buildup remained.
Map the kitchen boundary, return-air path and nearby exhaust discharge before setting the service scope. Condenser grease near food stalls can look like a refrigerant problem from inside, so exposure should be checked before gas work is assumed.
4. Condensate drainage fails only under heavier runtime
A cassette may stay dry during a quiet check and drip after sustained service. The Clarke Quay restaurant aircon leak appeared during the busier operating pattern because a low point in the drain route backed up under heavier water flow.
Trace the accessible drain route, note pumps or concealed sections and observe whether water clears. A dry panel during a short visit does not prove that the full route will remain clear under trading conditions.
5. Service access disappears after fit-out
Joinery, ceilings, storage and kitchen equipment can block filters, panels, drain pumps or outdoor units after the fit-out is complete. A unit that cannot be reached safely and without dismantling operations will be harder to inspect when a fault appears.
Confirm the access route before opening and record any zone that must be closed for service. The Orchard retail aircon shuts down case shows why the operating condition around a service-corridor condenser can matter, not just physical access to it.
6. There is no operating plan for a failed unit
A pre-opening check cannot promise that no unit will fail. The outlet still needs to know which zones depend on each system, who receives a fault report and which trading decision follows if cooling is lost.
The plan should preserve the symptom and operating context for diagnosis. It should not promise an attendance time, temporary cooling method or business outcome that has not been arranged.
How should the outlet test the setup without guessing?
Test the system in stages and record the change each stage produces. This separates a stable equipment issue from an airflow or load problem introduced by the operating setup.
Do not copy a temperature target, test duration or acceptable reading from another outlet. The premises design, equipment and operating brief determine what evidence is relevant. Record the actual test condition so the result can be interpreted later.
| Stage | What to observe | What the result can support |
|---|---|---|
| Units running in the completed space | Start-up, airflow, drainage, sound and affected zones | A baseline before the main operating loads are added |
| Planned exhaust state active | Changes in door pull, airflow direction and room comfort | Whether the other airflow system changes the aircon result |
| Representative kitchen and floor load | Which zones lose cooling and under what pattern | A targeted equipment, airflow or capacity assessment |
| Longer drainage observation | Whether cassettes, pumps and accessible drains clear without a late drip | Whether more drain-route investigation is needed |
- Stage
- Units running in the completed space
- What to observe
- Start-up, airflow, drainage, sound and affected zones
- What the result can support
- A baseline before the main operating loads are added
- Stage
- Planned exhaust state active
- What to observe
- Changes in door pull, airflow direction and room comfort
- What the result can support
- Whether the other airflow system changes the aircon result
- Stage
- Representative kitchen and floor load
- What to observe
- Which zones lose cooling and under what pattern
- What the result can support
- A targeted equipment, airflow or capacity assessment
- Stage
- Longer drainage observation
- What to observe
- Whether cassettes, pumps and accessible drains clear without a late drip
- What the result can support
- Whether more drain-route investigation is needed
What belongs to the aircon scope and what belongs elsewhere?
The aircon scope covers the comfort-cooling equipment, its condition and how it performs in the outlet. Other systems may affect that performance without becoming part of the aircon contractor's work.
| Item | Aircon readiness role | Scope limit |
|---|---|---|
| Indoor and outdoor aircon units | Inspect accessible condition, cooling pattern, drainage and controls | The check does not certify unrelated building systems |
| Kitchen exhaust and hood | Observe whether its operating state changes comfort cooling | Design, testing and certification belong to the relevant ventilation trade |
| Fit-out layout and doors | Record blocked supply, return or service paths | Layout redesign and building approvals are separate decisions |
| Condensate route | Check the accessible aircon drain path and pump response where fitted | Concealed or shared building drainage may need separate access or another trade |
| Electrical supply beyond the unit connection | Record a power symptom that affects the aircon | Broader electrical investigation belongs to the responsible electrical trade |
- Item
- Indoor and outdoor aircon units
- Aircon readiness role
- Inspect accessible condition, cooling pattern, drainage and controls
- Scope limit
- The check does not certify unrelated building systems
- Item
- Kitchen exhaust and hood
- Aircon readiness role
- Observe whether its operating state changes comfort cooling
- Scope limit
- Design, testing and certification belong to the relevant ventilation trade
- Item
- Fit-out layout and doors
- Aircon readiness role
- Record blocked supply, return or service paths
- Scope limit
- Layout redesign and building approvals are separate decisions
- Item
- Condensate route
- Aircon readiness role
- Check the accessible aircon drain path and pump response where fitted
- Scope limit
- Concealed or shared building drainage may need separate access or another trade
- Item
- Electrical supply beyond the unit connection
- Aircon readiness role
- Record a power symptom that affects the aircon
- Scope limit
- Broader electrical investigation belongs to the responsible electrical trade
What should the cooling failure plan contain?
The plan should contain a unit map, fault-reporting route, operating fallback and decision owner. Its purpose is to shorten the path from a visible symptom to a scoped assessment without promising a result.
Staff should report the affected zone, what stopped or changed, when it happened, whether other units still run and which operating loads were active. That is more useful than sending only a photo of the controller.
This checklist does not replace the rules that apply to the fit-out, food licence, ventilation, fire safety, electrical work or building work. It also does not prove that the cooling capacity is adequate. That decision needs the relevant design information and measured operating evidence.
- Map each indoor unit to the zone it serves.
- Keep the service access and shutdown constraints with the unit list.
- Name the person who can approve a separate fault scope.
- Record the minimum details staff must send with a fault report.
- Define the operating decision if a critical zone loses cooling.
- Keep another trade's contact where the evidence points outside the aircon scope.
Common questions
What aircon checks should an F&B outlet do before opening?
Can an aircon contractor certify the kitchen exhaust?
Why does a restaurant aircon drip only during busy hours?
Sources
- Food Shop Pre-Licensing Requirements
Singapore Food Agency (SFA) · Checked
SFA: kitchen fumes are extracted and exhausted through a hood system.
- Application Process & Fees for Licence / Permit for Food Retail
Singapore Food Agency (SFA) · Checked
SFA: food shop licence layout plans must show exhausts and wash basins.
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Tell us what’s going on. Symptoms, setup, photos, anything we should know. We’ll assess and come back with the right next step.