EC Cleaners Network · Openings, Takeovers & Refits
A change in menu or cooking equipment can change what the kitchen ventilation system needs to handle.
New fryers, grills, ovens, solid-fuel appliances, higher production or a different cooking process can alter the heat, grease and fumes generated by the kitchen. The existing extraction may therefore need competent review before the new operation begins.
What is changing in the kitchen?
Send the current and proposed equipment, menu or cooking-process changes, planned opening date and any existing ventilation or cleaning records. Photographs, drawings and known airflow or access issues are useful where available.
Search and Submit Ltd uses your details to respond and coordinate the enquiry, including sharing relevant information with appropriate independent specialists. Read our Privacy Policy. Please omit unrelated personal or sensitive information.
When should a menu or equipment change trigger a ventilation review?
HSE guidance says the caterer should provide the competent adviser, designer or installer with information about the maximum demand likely to be placed on the ventilation, the amount and type of kitchen equipment, the menu, number of meals and number of staff.
If one or more of those factors is changing materially, the assumptions behind the inherited ventilation system may also need to be revisited.
The question is not whether the old system still runs. The question is whether it remains suitable for the kitchen you are about to operate.
Changes that should prompt a closer look
More grease-intensive cooking
Additional frying, grilling or similar processes can increase grease and cooking fumes entering the extract system.
Higher heat output
New ovens, grills or other heat-producing appliances can increase the amount of hot air the ventilation system needs to remove.
More cooking equipment
Adding appliances can increase the total ventilation demand even if each individual appliance appears similar to the previous equipment.
Different equipment position
Moving appliances relative to the canopy can affect how effectively the cooking plume is captured.
Longer operating hours
A restaurant trading for longer periods can place greater demand on both ventilation performance and extract-cleaning frequency.
More meals or higher production
Increased throughput can change the peak demand placed on the ventilation system.
Gas or solid-fuel equipment
Combustion appliances add ventilation and safety considerations that should be addressed by suitably competent specialists.
Why new fryers, grills or ovens can matter
Different appliances produce different levels of heat, grease, vapour and combustion products. Changing the appliance mix can therefore change both the volume and character of what the canopy must capture.
BESA’s DW/172 specification is the recognised industry reference for the design, installation and maintenance of commercial kitchen ventilation systems. BESA notes that the current edition includes expanded appliance coefficient schedules for airflow calculation and reflects modern cooking techniques and catering equipment design.
Canopy capture still has to match the cooking plume
The canopy has to capture the heat and fumes rising from the appliances. If equipment is moved, increased in size or changed to a more intensive cooking process, the plume may behave differently from the one the existing canopy was originally intended to capture.
If smoke or fumes begin escaping from the canopy after the change, that is evidence that the new operating conditions need investigation rather than a reason to assume the fan only needs cleaning.
Replacement air needs to be reviewed as well
The extraction system removes air from the kitchen and that air has to be replaced. HSE says catering ventilation should provide suitable replacement air and highlights the importance of adequate make-up air for gas-fired appliances.
Increasing extract demand without considering replacement air can affect canopy capture, air movement, staff comfort and safe operation of combustion appliances. The solution is therefore not simply to increase fan speed without understanding the system.
Extract and replacement air need to be considered together.
What if the new equipment uses gas?
HSE says inadequate air supply or incorrect flueing can contribute to incomplete combustion and accumulation of combustion products such as carbon monoxide. Gas-fired catering equipment therefore needs appropriate ventilation and competent gas-safety input.
Where gas work is involved, it must be carried out by a Gas Safe registered engineer qualified for the relevant commercial catering work. Do not treat a gas-related ventilation change as a cleaning or facilities adjustment.
What if the new concept introduces solid fuel?
Solid-fuel appliances require particular attention because carbon monoxide is produced during normal operation. HSE says suitable extraction is necessary and provides separate guidance on preventing carbon monoxide exposure from solid-fuel appliances in commercial kitchens.
A restaurant changing from a conventional cooking operation to charcoal, wood or another solid-fuel process should not assume that the existing extraction is automatically suitable.
Does the change mean the extract system needs cleaning?
Not automatically. Cleaning condition and ventilation suitability are separate questions. A heavily contaminated system may need specialist cleaning, while a clean system may still be unsuitable for a new equipment load or cooking process.
If the takeover records are incomplete, review the latest report, photographs, cleaning history and access limitations before deciding whether cleaning should form part of the pre-opening work.
What if the kitchen layout is changing?
Moving appliances, adding partitions, altering ceilings or changing supply-air routes can influence the way air moves through the kitchen. A canopy that worked with the previous layout may perform differently when heat sources or cross-draughts move.
Where the refit affects the extract route, canopy arrangement, replacement air or equipment position, include those changes in the technical brief before the restaurant opens.
Historic restaurant project context
Restaurant refits and new concepts are easier to manage when the planned cooking operation is described before specialist contractors are appointed. The equipment, menu and production plan give the ventilation professional context that cannot be obtained from an old cleaning certificate alone.
Historic EC Cleaners project imagery is used for restaurant context. It is not presented as evidence that the photographed premises required a ventilation redesign or equipment change.
What information should go into the contractor brief?
- Current equipment. List the appliances presently served by the extract system.
- Proposed equipment. Identify additions, removals, moves and changes in fuel type.
- Menu and cooking processes. Explain frying, grilling, baking, wok cooking, solid fuel or other material changes.
- Peak production. Include expected meals, busy periods and operating hours.
- Existing ventilation evidence. Provide drawings, commissioning data, airflow information and earlier reports where available.
- Existing cleaning evidence. Include recent reports, certificates, photographs and access limitations.
- Known symptoms. Record heat, smoke, odour, weak pull or fan issues already observed.
- Opening date. Give the specialist enough context to distinguish a genuine deadline from routine future work.
Which specialist route may be needed?
Ventilation design or performance
Where the cooking load or equipment is changing materially, a competent kitchen ventilation specialist may need to assess the system.
Gas equipment
Gas work and gas-safety conclusions require appropriately qualified Gas Safe registered engineers.
Extract hygiene
If the inherited system is contaminated or overdue for cleaning, competent kitchen extract cleaning may form a separate workstream.
Mechanical fan or controls
Fan duty, controls, motor condition and other mechanical issues need the appropriate mechanical or controls specialist.
Access or duct changes
Where new equipment or layout changes expose access problems, enabling works may need to be organised before inspection or cleaning.
Related restaurant takeover guidance
Menu and equipment changes: frequently asked questions
Do I need to review the kitchen extraction if I change the menu?
Possibly. A different menu can change the cooking load, heat, fumes and grease produced by the kitchen. HSE says ventilation design should take account of maximum demand, the amount and type of equipment, the menu, number of meals and staffing.
Do new fryers or grills affect the extraction requirement?
They can. New or more intensive cooking equipment can increase heat, grease and cooking fumes and can change the plume the canopy needs to capture. A competent ventilation professional should review whether the existing system remains suitable.
Can I rely on the old extraction system because it worked for the previous restaurant?
Not automatically. The previous operator may have used different equipment, a different menu, fewer meals or different trading hours. The inherited system should be considered against the new operating conditions.
Does changing the cooking equipment mean the ductwork needs cleaning?
Not by itself. Cleaning and ventilation suitability are separate questions. The system may need cleaning because of grease contamination, while the change in equipment may require a separate ventilation or design review.
Why does replacement air matter when equipment changes?
More or different cooking equipment can change the amount of air the system needs to extract and replace. HSE says adequate make-up air is an important part of kitchen ventilation, particularly where gas-fired appliances are used.
What if the new equipment uses gas or solid fuel?
Combustion appliances add safety considerations. HSE says adequate ventilation is particularly important for gas-fired equipment, and solid-fuel appliances need suitable extraction because carbon monoxide is produced during normal operation.
What information should I send for a kitchen extraction review?
Send the existing ventilation and cleaning records, current and proposed equipment lists, menu or cooking-process changes, planned opening date, photographs or drawings where available and details of any known airflow, heat, smoke or access problems.
Changing the menu, equipment or cooking process before opening?
Send the current and proposed equipment, existing ventilation records and opening information. EC can help organise the commercial requirement so ventilation suitability, extract hygiene, gas or solid-fuel considerations, access and mechanical work are separated before the appropriate independent specialists are approached.
Responsibility statement:
EC Cleaners Network is operated by Search and Submit Ltd. Search and Submit Ltd does not inspect, clean, test, survey, design, remediate, certify or technically approve kitchen extraction or ventilation systems. Independent appointed contractors and competent professionals remain responsible for technical assessment, safe working, quotations, physical delivery, reporting, certification and professional conclusions within their appointed scope.
TR19® Grease and TR19® Air are BESA specifications. References are descriptive and no BESA endorsement of or affiliation with EC Cleaners Network is claimed.