Air Filter Planning for Kitchen Renovations in Brisbane Units

A kitchen renovation in a Brisbane unit can change the air movement in the whole apartment, especially when walls are opened up, cabinets are removed and trades start cutting, sanding and drilling. That means filter planning should be part of the renovation prep, not an afterthought.

When access is tight, dust levels rise quickly and temporary ventilation may be needed to keep work areas manageable. The right approach depends on the unit layout, the existing mechanical setup and how the renovation will be staged.

Start with the ventilation and filtration picture

Before demolition begins, work out what air equipment is already in place and what will be affected by the renovation. In units, kitchen upgrades often sit close to exhaust systems, return air grilles, ceiling cavities and shared building services, so small changes can have a bigger impact than expected.

If the building has mechanical ventilation, confirm the site requirements with the mechanical services engineer or building owner. AS 1668.2:2024 is often part of that discussion, but the practical application depends on the specific installation and building rules.

Key questions to settle early include:

• •Is the kitchen connected to a recirculating rangehood or an exhaust system that passes through filters?
• •Will any ceiling or wall work expose ducting, grilles or filter housings?
• •Does the renovation require temporary extraction, supply air or dust isolation?
• •Are there space limits that affect the size or type of filter that can be fitted?

If you need replacement filters for an existing system, our products can help you review options before the work starts.

Dust load changes during demolition and fit-out

A unit kitchen renovation often creates several different dust sources. Demo work can release heavier debris, while cutting, sanding and plaster finishing produce finer airborne particles that can load filters faster than normal.

That matters because filter selection is not just about the final finished kitchen. It is also about what the space needs during the messy stages of the job.

Things to think about:

• •Timber, plasterboard and joinery dust can build up in return paths and temporary ducts.
• •Any nearby occupied rooms may need better separation from the work zone.
• •If temporary extraction is used, the filter stage must suit the dust type and the airflow.
• •Filters can capture particles, but they need to be checked and changed based on the site conditions.

Inspection frequency depends on the system, the dust load and how the job is progressing. Where gauges are fitted, monitor pressure drop and follow the filter and equipment manufacturer instructions rather than relying on a fixed calendar.

Temporary filtration for active work areas

For some renos, the best option is temporary air cleaning or extraction while the kitchen is out of action. This can help manage dust transfer into living areas and common spaces, particularly in compact unit layouts.

When selecting temporary filtration, consider:

• •the volume of the work area
• •whether the unit is sealed off with plastic or temporary walls
• •the type of dust being generated
• •whether the equipment needs washable or disposable filters

Some filters are designed to be washable - check the product instructions. If you are unsure, ask before using a filter outside its intended application.

Plan for trades access and maintenance during the build

Unit renovations are often constrained by stairs, lifts, narrow hallways and limited storage. That affects more than just materials handling. It can also change how filters are delivered, fitted and serviced during the job.

If a filter housing is in a tight ceiling space or above cabinetry, make sure the access route for removal and replacement is known before the kitchen is installed. A filter that is simple to inspect on paper can become difficult to maintain once joinery and finishes go in.

Practical points for builders and contractors:

• •measure the existing filter carefully before ordering replacements
• •check how the filter is removed, not just the face dimensions
• •leave enough access for future servicing once cabinets and bulkheads are fixed
• •protect replacement filters from dust on site until installation
• •coordinate filter changeovers with messy trades so the clean-up stage is not delayed

If you need help checking dimensions, how to measure an air filter is a useful starting point.

Choose the right filter type for the system, not just the renovation

Kitchen work often raises the question of whether a higher-rated filter is needed. The answer depends on the system design, airflow requirements and what the building can actually accommodate.

In Australian projects, you may still hear references to G3, G4 or F5-F9 classes. Those are EN 779 classes, which are now superseded by ISO 16890, but they are still widely used in Australia. The important point is that MERV, EN 779 and ISO 16890 do not convert directly, so avoid assuming one rating automatically replaces another.

If the project involves finer particle capture, HEPA may come up. For reference, H13 filters are at least 99.95% efficient and H14 filters are at least 99.995% efficient at the most penetrating particle size under EN 1822. Those ratings are only relevant where the system is designed for them and where airflow, housing and sealing are suitable.

For a unit kitchen renovation, the best choice is usually the one that matches:

• •the existing equipment and filter frame
• •the required airflow and pressure drop
• •the amount of dust expected during the work
• •the available access for maintenance

If the existing filter housing no longer suits the renovation layout, custom air filters may be the practical solution.

Reduce disruption by planning the changeover sequence

The order of work matters just as much as the filter itself. A good plan avoids unnecessary contamination of clean finishes and reduces the chance of reopening finished areas later.

A sensible sequence usually includes:

• •confirming the final filter size and type before cabinetry is installed
• •fitting temporary protection during demolition and rough-in
• •checking filters and housings after dusty trades complete their work
• •replacing or cleaning the filter after the dirtiest stage, if the product is intended for that use
• •inspecting again before handover, especially if the kitchen exhaust or ventilation system has been switched off during works

This is also the point where builders and mechanical contractors should make sure the owner understands what maintenance is required after completion. If servicing will be part of the handover, filter servicing may be relevant. For larger or more complex systems, commercial filter servicing can also apply.

Keep the finished kitchen practical to maintain

A renovation should not make future maintenance harder. If the new kitchen design changes access to grilles, exhaust components or filter housings, plan for that before the final fit-off. A neat finish is useful, but only if it still allows the system to be inspected and maintained properly.

This is especially important in Brisbane units where space is limited and the kitchen may sit close to shared ventilation paths. The best outcome is a system that suits the new layout, the building rules and the level of dust or grease the kitchen is likely to see.

A few final checks can save time later:

• •keep the filter specification with the renovation documents
• •note the replacement size and access method for future reference
• •record any temporary ventilation used during the build
• •confirm with the owner or manager who will be responsible for ongoing checks

Talk to Total Air Filtration before the reno starts

Total Air Filtration is a family-owned air filter manufacturer and supplier based in Hillcrest, Brisbane QLD, and we can help you choose or make the right filters for a unit kitchen renovation.

If you need practical advice on fit, access or temporary filtration, call 07 3800 3448 or request a quote.

You can also contact us if you want to discuss the project before demolition begins.