How to Reduce Back-of-House Odours in Clubs With Multiple Kitchens

Clubs with multiple kitchens, bars, toilets and gaming areas often have one thing in common: air does not stay where you expect it to stay. Odours can move through shared return air paths, door openings, pressure imbalances and poorly matched ventilation equipment, creating complaints in places that are not even close to the source.

The good news is that odour control is often easier when it is treated as a whole-site air management issue rather than a single exhaust problem. A staged filtration approach, combined with sensible airflow design, can help reduce cross-contamination between areas and make back-of-house conditions easier to manage.

Why odours travel in clubs with shared back-of-house spaces

In a club environment, kitchens are rarely isolated. You may have food preparation areas, bars, toilets, cool rooms, gaming spaces, staff corridors and plant areas all sharing the same building shell.

Odours can move for a few common reasons:

• •Exhaust air is not captured at the source, so cooking odours escape into surrounding areas
• •Return air grilles draw mixed air from one zone into another
• •Pressure differences pull air from toilets or waste areas into adjacent spaces
• •Doors are propped open during busy service periods
• •Mechanical systems are set up for general comfort, not for odour separation between zones

Once air from one space mixes with another, odour transfer can become noticeable very quickly. That is why the layout of the system matters as much as the filter selected.

Start with airflow zoning, not just filtration

Before looking at filters, it helps to map where air is being supplied, exhausted and returned. In clubs with multiple kitchens, the aim is usually to keep air moving in a controlled direction so that stronger odours do not migrate into cleaner areas.

A mechanical services engineer can help confirm whether the current arrangement suits the site. For many facilities, the main questions are:

• •Are kitchens under negative pressure relative to surrounding areas where appropriate?
• •Are toilets independently exhausted?
• •Are gaming rooms and bars receiving clean supply air without drawing in kitchen exhaust?
• •Are return air paths helping or hindering odour separation?

If airflow is not managed well, even a high-quality filter may only treat part of the problem. Filtration works best when the system is designed to capture contaminants before they spread.

How staged filtration helps manage cross-contamination

Staged filtration means using more than one filtration step to handle different loads across the system. In clubs, that can be helpful because the air moving through a building can contain grease, dust, food odours, cleaning residues, tobacco-related particles where relevant, and general airborne dirt.

A staged setup may include a combination of:

• •Pre-filters to capture larger particles before they load the finer stages
• •Secondary filters for finer dust and airborne contamination
• •Higher-efficiency filters where the system design allows and where odour control needs are greater
• •Final-stage filters selected to suit the application and the equipment

This approach can help extend the life of downstream filters and reduce the chance that one heavily loaded section becomes the weak point in the system.

It is also useful where one area has a much heavier odour or particulate load than another. For example, a hot kitchen may need a different filtration approach from a bar servery or gaming room, even if those spaces are on the same premises.

Choosing filters for the right part of the system

Not every filter belongs in every position. A coarse pre-filter may be the best first step in a dusty or greasy environment, while finer filters may be better suited to air handling equipment downstream.

When selecting filters, consider:

• •Air volume and face velocity
• •Dust and grease loading
• •Access for maintenance
• •Housing dimensions and seal quality
• •Whether the system uses bag filters, panel filters or another format

If you need a non-standard size, custom air filters can be useful when the existing housing or equipment requires a precise fit.

Toilets, bars and gaming areas need different air handling attention

Odour complaints in clubs often come from the spaces that seem least connected to the kitchen. Toilets, bars and gaming areas can all become part of the same transfer path if the ventilation system is not balanced properly.

Toilets should generally be handled as a separate exhaust zone so odours are not pulled into nearby public areas. Bars can be affected by kitchen exhaust, dishwasher steam and refrigeration heat, while gaming rooms may experience odour drift from entry points, air curtains, shared return paths or traffic corridors.

Practical steps to review include:

• •Check whether toilets are exhausting directly outside, not recirculating into other zones
• •Make sure kitchen extract does not short-circuit into supply air intakes
• •Inspect door seals and transfer grilles between adjoining spaces
• •Look at whether mixed-use back-of-house corridors need better compartmentalisation

In some sites, small changes in airflow direction can make a noticeable difference to how odours move between areas.

Maintenance matters as much as filter selection

Even the right filter will perform poorly if it is loaded, damaged or fitted badly. Clubs with multiple kitchens often put more strain on their filters because of cooking vapours, grease, dust and constant airflow.

Inspection frequency depends on the system, site conditions and dust load. Follow the filter and equipment manufacturer instructions, and monitor pressure drop where gauges are fitted.

Useful maintenance checks include:

• •Confirming the filter frame is seated and sealed correctly
• •Looking for bypass air around the edges
• •Checking for grease or dust build-up that may indicate the first stage is overloaded
• •Reviewing whether the current filter grade is suitable for the actual operating conditions
• •Assessing whether some filters are designed to be washable and, if so, following the product instructions carefully

If you are not sure how to identify the current size or fit, how to measure an air filter is a useful reference for replacement planning.

Standards, system design and practical expectations

For clubs and hospitality venues, ventilation and air movement should be assessed against the site’s actual use, not just the original equipment schedule. If you are reviewing upgrades or redesigns, AS 1668.2:2024 is often part of the discussion, but site requirements should be confirmed with the mechanical services engineer or building owner.

It is also worth noting that filter ratings do not convert neatly across standards. MERV, EN 779 and ISO 16890 are not direct equivalents, so it is better to select filters based on the system’s needs and the equipment documentation rather than chasing a simple conversion.

If you are dealing with a specialised application, the choice may include products from our our products range or a tailored solution that suits the housing, airflow and maintenance access.

Build a practical odour control plan for the whole venue

A club with multiple kitchens needs more than a single exhaust fan or a higher-grade filter. The most effective approach is to look at the whole path the air takes: where it enters, where it is filtered, where it is exhausted and where it may escape into other spaces.

A sensible review usually covers:

• •Airflow zoning across kitchens, bars, toilets and gaming areas
• •Filter staging and access for maintenance
• •Pressure relationships between connected spaces
• •Seal quality and bypass risk
• •Whether the current equipment still matches the venue’s use pattern

If you are working through a refurbishment, a system issue or a replacement programme, filter servicing and commercial filter servicing can help keep the system aligned with the site’s needs.

Talk to Total Air Filtration about the right filter setup

Total Air Filtration is a family-owned air filter manufacturer and supplier in Hillcrest, Brisbane QLD, and we work with clubs, facility teams and mechanical contractors on practical filter solutions for complex sites. If you need a replacement, a custom size or help matching filters to an existing system, call 07 3800 3448 or request a quote.

If you would like to discuss an upgrade or a replacement approach, contact us and we can help identify the right filters for your application.