Selecting Air Filters for Aged Care Common Areas: Balancing Comfort and Practicality

Aged care common areas need a practical approach to air filtration. Lounges, dining rooms and corridors should feel comfortable to occupy, while the HVAC system still needs to move air efficiently and remain straightforward to maintain.

The right filter choice depends on the space, the ventilation design and how the building is used day to day. In older or busier facilities, the best solution is usually the one that fits the equipment properly, captures the particles the system is designed to handle and can be inspected and replaced without disrupting residents and staff.

Start with the space, not just the filter rating

Common areas in aged care are not all the same. A quiet reading lounge, a high-use dining room and a long circulation corridor can place different demands on the ventilation system.

Before selecting a filter, consider:

• •how many people use the area and how often
• •whether meals are prepared or served nearby
• •the amount of foot traffic and tracked-in dust
• •whether the area connects to outdoor entry points
• •whether the system serves one zone or several spaces at once

A filter that is too restrictive can reduce airflow and make the system harder to maintain. A filter that is too coarse may not capture the level of dust and debris that builds up in a busy common area. The aim is to find a sensible middle ground that suits the equipment, the use of the space and the maintenance resources available.

If you are planning changes to a ventilation system, it is worth checking the site requirements with the mechanical services engineer or building owner, particularly where AS 1668.2:2024 is part of the design or compliance conversation.

Matching filter type to lounges, dining areas and corridors

The most suitable filter often depends on the role of the air handling system. In many aged care facilities, a staged approach works well: a pre-filter to catch larger particles, followed by a finer filter where the system can support it.

Lounges and quiet sitting areas

Lounges are usually about comfort, steady airflow and keeping the space feeling fresh without creating draughts or noise issues.

For these areas, look for filters that:

• •fit securely with minimal bypass
• •provide particle capture without overloading the fan
• •can be accessed easily for inspection and changeover
• •are available in sizes that match the existing equipment

If a lounge shares a system with other areas, the filter choice may need to serve the broader circuit rather than the room on its own. That is where coordination between the facility manager and HVAC contractor matters.

Dining areas

Dining rooms often deal with a different mix of airborne particles, including lint, general dust and odours from food service activity. Filters do not remove odours on their own, but they do help capture particles that contribute to a dusty or stale feeling in the space.

In dining areas, practicality matters as much as performance. Consider whether the filter arrangement makes it easy to:

• •inspect the condition of filters without disturbing service
• •change filters safely in tight plant areas
• •maintain consistent airflow while the room is occupied

If cooking or food preparation equipment is connected to the same ventilation strategy, make sure the filter selection is suitable for the actual system design. In many cases, extraction and supply should be reviewed separately.

Corridors and circulation spaces

Corridors are often overlooked, but they can move a lot of air and a lot of dust. Because these spaces connect rooms, entrances and service areas, they can become a pathway for contaminants if filtration and maintenance are not well planned.

For corridors, the key is usually not simply choosing a finer filter. It is making sure the whole system can handle the pressure drop, the air delivery and the ongoing upkeep.

Comfort and airflow come first

In aged care environments, a filter should support the occupant experience, not work against it. If airflow drops too far, temperatures can feel uneven, rooms may become stuffier and the HVAC system may have to work harder to deliver the same result.

That is why filter selection should always be considered alongside fan capacity, ductwork, grille layout and access for servicing. A more efficient filter is not automatically the best choice if the system was not designed for it.

Useful questions to ask include:

• •Can the system maintain the required airflow with this filter in place?
• •Is there enough surface area to keep resistance manageable as dust builds up?
• •Are the filters easy to inspect and replace in the plant room or ceiling space?
• •Will staff need specialist access equipment to reach them?

Where gauges are fitted, monitor pressure drop to judge when a filter needs attention. Do not rely on appearance alone, as some filters can look serviceable while already restricting airflow.

Maintainability matters just as much as performance

A filter that performs well on paper can still be a poor choice if it is awkward to service. In aged care, maintenance work often needs to happen with minimal disruption, so access and handling should be part of the decision.

Think about:

• •whether the filter frames are standard or custom sizes
• •whether the unit has enough clearance for safe removal and installation
• •whether staff need simple, clear orientation marks
• •whether replacement media are easy to source consistently

Some filters are designed to be washable - check the product instructions before assuming a product can be cleaned and reused. For most facilities, a predictable servicing approach is easier to manage than a solution that depends on specialist cleaning or inconsistent site practices.

Inspection frequency depends on the system, site conditions and dust load. Follow the filter and equipment manufacturer instructions, and increase checks when the building is undergoing renovation, when nearby works generate dust, or when the facility has periods of heavier use.

If you are using a service provider, it may be worth arranging filter servicing or commercial filter servicing to keep the schedule consistent and the records tidy.

Ratings, standards and when finer filtration makes sense

Filter ratings can help narrow the options, but they should not be treated as interchangeable across standards. MERV, EN 779 and ISO 16890 do not convert directly, so avoid relying on simple one-to-one comparisons when specifying or replacing filters.

In Australian projects, you may still see G3/G4/F5-F9 discussed. Those are EN 779 classes, which have been superseded by ISO 16890 but are still widely used in Australia. The important thing is to match the rating to the actual system requirements rather than chase a number in isolation.

HEPA filters are only relevant in some applications. When they are specified, H13 is at least 99.95% and H14 is at least 99.995% efficient at the most penetrating particle size under EN 1822. That level of filtration is not necessary for every common area, and the system must be designed to handle the associated resistance.

If you are unsure whether a finer grade is appropriate, discuss the application with the mechanical services engineer or building owner before ordering components.

Working with the right supplier for the building

The best filter solution for an aged care common area is usually the one that fits the equipment, can be maintained reliably and supports the daily use of the building. That may mean standard sizes, a staged filtration setup or a custom-made option where the existing framework is unusual.

Total Air Filtration is a family-owned air filter manufacturer and supplier based in Hillcrest, Brisbane QLD. We can help with standard products, custom air filters and guidance on measuring existing filters correctly through how to measure an air filter.

If you are reviewing filters for lounges, dining rooms or corridors, we can supply or make the right filters for the application. Call 07 3800 3448 or request a quote. You can also contact us if you want to discuss the building, the system or the sizes you need.