How to Handle Smoke Drift from Neighbouring Balconies in Unit Blocks

Smoke drifting in from neighbouring balconies can quickly become a recurring complaint in unit blocks, especially when windows, sliding doors and shared corridors allow odour and fine particles to move between lots. While building rules and communication between occupants matter, strata and property managers often need practical indoor solutions that can help manage the air inside affected apartments.

The right filtration setup won’t solve every source of smoke drift, but it can make a meaningful difference to indoor particle capture and ongoing amenity. The key is matching the filter to the ventilation arrangement, the available space, and the level of smoke intrusion at the site.

Start with the airflow path, not just the smell

Before choosing a filter, it helps to understand how smoke is entering the apartment and where the air is moving once it gets inside. Balcony smoking can affect a unit through open windows, door gaps, corridor leakage, bathroom exhaust transfer, or a shared mechanical system that draws air from nearby spaces.

For strata managers and property managers, the first step is usually to identify whether the issue is:

• •direct entry through openings to the balcony or living area
• •cross-flow from common areas or adjacent units
• •recirculation through an air conditioning or ventilation unit
• •odour lingering because the apartment has limited fresh air exchange

This distinction matters because a portable room filter, an upgraded HVAC filter, or a system review may each address a different part of the problem.

Practical indoor filtration options for apartments

Portable air cleaners for individual lots

Where smoke drift is concentrated in one or two units, a portable air cleaner with a suitable particulate filter can be a straightforward option. These units are typically used in bedrooms or living areas where occupants spend the most time.

When selecting a portable unit, consider:

• •room size and the manufacturer’s stated coverage
• •whether the unit uses a true particle filter or a multi-stage system
• •how easy it is to source replacement filters
• •fan noise, especially for bedrooms
• •whether the filter can capture fine smoke particles and reduce airborne dust

For ongoing odour management, it is worth remembering that filters generally capture particles rather than removing odour on their own. Some portable systems include activated carbon media to help with smell, but performance depends on the amount and type of media used, the airflow through the unit, and how much smoke is entering the space.

Upgrading filters in existing HVAC systems

If the apartment has a ducted or split-system arrangement with a filter compartment, an upgrade may be possible provided the fan and housing can handle the change. In many apartment buildings, the best option is not simply a “heavier” filter, but the right filter for the available airflow and pressure drop.

A filter that is too restrictive can reduce airflow, increase strain on the system, or create poor comfort outcomes. That is why any upgrade should be checked against the equipment design and the site requirements confirmed by the mechanical services engineer or building owner.

If you are assessing filter options, you can compare product types on our products or speak with us about custom air filters for non-standard housings.

Carbon and particle filtration together

Smoke drift involves both visible and invisible components. A practical indoor solution often combines:

• •particle filtration for smoke particles, dust and general airborne debris
• •odour media where the application allows it
• •adequate airflow so the filter can do useful work without overloading the system

This is especially relevant in apartment settings where the complaint is not only the smell, but also a lingering stuffiness after smoking has occurred nearby. In some cases, a staged approach works best: a particle filter to address airborne matter, plus an odour-focused media stage where the unit design supports it.

What to check before recommending a filter change

A filter upgrade is only useful if the system can physically accept it and the site conditions suit it. For strata and property managers, the most helpful questions are often practical ones.

• •What is the current filter size and housing type?
• •Is the filter fitted to a mechanical ventilation unit, a split system, or a portable cleaner?
• •Has the system been measured recently, and is there room to increase filtration without affecting airflow?
• •Are there visible gaps, poor seals, or bypass around the filter frame?
• •Is the issue isolated to one apartment or across a stack of units?

If you are unsure how to identify the existing filter, our guide on how to measure an air filter can help when you are checking dimensions before ordering a replacement.

Standards, system checks and maintenance matters

For larger buildings or centralised ventilation, smoke drift complaints can point to a broader system issue rather than a single apartment problem. AS 1668.2:2024 is relevant to ventilation in many commercial and multi-residential settings, but the site requirements should always be confirmed with the mechanical services engineer or building owner.

Where pressure gauges are fitted, monitor pressure drop so you can see when resistance is increasing. Inspection frequency depends on the system, site conditions and dust load, and you should follow the filter and equipment manufacturer instructions rather than relying on a fixed timetable.

A few practical checks can make a real difference:

• •inspect seals and filter fit to reduce bypass
• •confirm the correct filter grade for the system
• •check whether the fan is maintaining intended airflow
• •review whether shared intake points are drawing in smoke from balconies or courtyards
• •look for evidence of dust build-up that may indicate poor capture or leakage

Some filters are designed to be washable - check the product instructions before reusing them. If the filter is not designed for washing, cleaning it may damage the media or reduce performance.

How strata managers can reduce repeat complaints

A filtration solution works best when it sits inside a clear building response. That may include resident communication, lot-level guidance, and maintenance of ventilation assets. Even if the building cannot control what happens on neighbouring balconies, it can still improve the indoor environment through the right technical response.

Useful actions include:

• •document where and when the smoke drift is noticed
• •identify whether the complaint relates to odour, visible smoke, or both
• •confirm whether the lot has operable windows or a mechanical system that could be adjusted
• •arrange a filter review before replacing parts that may not be the real cause
• •keep a record of filter size, type and installation details for future servicing

If the building requires ongoing support, filter servicing or commercial filter servicing may be appropriate depending on the system type and access arrangements.

Getting the right filters for the site

Smoke drift from neighbouring balconies is frustrating because it can be intermittent, hard to predict, and difficult for residents to control. The most effective response is usually a practical one: check the airflow path, assess the existing system, and choose filtration that suits the apartment and the building.

Total Air Filtration is a family-owned air filter manufacturer and supplier in Hillcrest, Brisbane QLD, established 2009. We can help supply or make the right filters for your building, including non-standard sizes and site-specific requirements. Call 07 3800 3448 or request a quote. You can also contact us if you need help identifying a filter or discussing the best option for a particular unit block.