New Zealand homeowners understand the value of investing in a home ventilation system. Not only do they help to regulate temperature all year round (which means you don’t have to deal with a damp home in winter and a stuffy one in summer), but they also improve air quality and make for a healthier space.

When your system control panel indicates your filter is full, make sure you are using a genuine SmartVent filter for your ventilation system to protect your system and its warranty.

What gets filtered?

The job of the filter in your ventilation system is to keep the air in your home clean and healthy. Essentially, it removes unhealthy dust and airborne particles that could be harmful, such as those that trigger allergies or asthma attacks. Below, we’ve covered some of the things that commonly get filtered from the air in NZ homes.


Cooking, burning candles and using gas fireplaces can produce ultrafine smoke particles that can be harmful when inhaled. Because they are so small, these particles can enter the bloodstream and could even have a negative effect on your lungs. A SmartVent ventilation system with a filter reduces the amount of smoke particles, making the air safer to breathe while still preventing dampness and mould growth.


Atmospheric dust particles have been linked to wheezing, asthma attacks, bronchial infections, dermatitis and allergies. These particles are produced everyday by the things around us, such as human hair, pollution, pet dander, dirt and other natural debris in the air. Filters in your ventilation system significantly reduce atmospheric dust in the home environment, improving your indoor air quality and reducing the risk of health problems.


When windows and doors are left open, it’s natural for spores and pollen to make their way into your home. Changing the filter of your air ventilation system regularly is your best defence against hay fever-inducing particles, which could reduce your risk of common nasty symptoms such as sneezing, watery and itchy eyes, and a runny nose.


Normal household dust can contain as much as 9000 different species of microbes. Harmful bacteria is able to spread in multiple ways around the home – even in clean homes. Some types of bacteria produce endotoxin, which can  make allergy and asthma symptoms worse. Since dampness is a leading contributor to bacteria and mould, it makes sense to take steps to reduce your home’s moisture levels. SmartVent filters draw out bad bacteria to improve air quality and inhibit the growth of more.


Types of filter ventilation systems

SmartVent F7 Filter

SmartVent uses high quality filters designed to capture dust, pollens & allergens with 80-90% arrestance of particles 0.4 microns and above. Only a genuine SmartVent F7 filter cartridge has optimum width to custom fit the filter frame.

We recommend replacing after approx 12 months for maximum effectiveness, although your controller will tell you when your filter is full.

Replacement CartridgeDCT2093

Carbon Filters

The carbon filter option is an absorbent filter that will effectively trap odours, pollutants and particles passing through it.

We recommend replacing after 6 months for maximum effectiveness.

Replacement CartridgeDCT2277

HEPA Filters

HEPA filters are 99.97% efficient in preventing the spread of airborne bacteria and viral organisms at the 0.3 micron particle size. Recommended for those with allergies or breathing ailments.

We recommend replacing after 6 months for maximum effectiveness.

Replacement CartridgeDCT2278

150mm Springs for Cassette Filters

Spring replacements for the Cassette Filters.

Replacement product codeDCT4602