The Best Air Purifiers in New Zealand: An Extensive Comparison - Snap Air

The Best Air Purifiers in New Zealand: An Extensive Comparison

Embarking on a quest to find the best air purifier in New Zealand could easily turn into navigating a labyrinth of countless reviews and technical jargon. A common concern might be: “Which air purifier is the best in NZ for maintaining a healthy indoor environment?” or “How do HEPA filters contribute to air quality?” We understand the urgency, especially post the COVID pandemic, to ensure the air we breathe is clean and safe.

Worry not, as we have done the legwork to sift through the plethora of information and have distilled the essence of what makes an air purifier stand out from the rest. Key parameters like Clean Air Delivery Rate (CADR), noise levels, and price are significant indicators that have been thoroughly analysed to aid in your decision-making process.

Key Considerations When Comparing Air Purifiers:

  1. Understanding the Clean Air Delivery Rate (CADR) is crucial as it measures an air purifier’s efficacy in cleaning air within a specific room size.
  2. A balance between noise levels and purification efficiency is vital for a serene indoor environment.
  3. The price should reflect the purifier's performance and features, not just the brand reputation.

Understanding CADR:

The Clean Air Delivery Rate (CADR) is a metric that indicates the volume of air an air purifier can clean within a specific timeframe, measured in cubic meters per hour. A higher CADR number denotes that the purifier can clean a larger volume of air more quickly, making it an essential factor to consider when comparing air purifiers in New Zealand.

We focus on this measurement rather than the room sizes recommended by manufacturers, because these can often be very misleading.

Noise Levels:

Noise levels, measured in decibels (dB), reflect the operational sound of the air purifier. A noise level under 55dB is generally considered relatively quiet, akin to a subdued conversation, making it conducive for a peaceful indoor environment. Noise levels between 55-59dB are likened to regular conversation levels, and anything above 60dB can be disruptive. Finding a purifier that balances efficient operation with low noise levels is key to ensuring a tranquil living or working space.

Air Quality and Choosing an Air Purifier:

Indoor Air quality is a paramount concern, and having a reliable air purifier can mitigate airborne pollutants like dust, pollen, and microbes. A high-quality HEPA filter is a core component that elevates an air purifier's effectiveness in trapping minute particles. Additionally, aspects like CADR, noise levels, and the absence of ionisers are crucial factors to consider when comparing air purifiers.

The pricing often reflects brand reputation and additional features, but as our analysis shows, it doesn't always equate to superior performance.

Comparison Analysis:

With this understanding, let's delve into our comparison. This detailed analysis, conducted in February and March 2023, focuses on Smart Air purifiers, along with other brands like Breville, Dyson, Sunbeam, TruSens, Daikin, Sharp, Samsung, and others, available from popular retailers such as Briscoes, PB Tech, and Noel Leeming.

We explored over 70 models, but only 53 provided complete information on noise levels and CADR. Here's what we found:

Air Purifiers under $500 in New Zealand

This price bracket features a wide variety of 18 air purifiers with CADR values ranging from 60m³/hour to 400m³/hour. Among these, the Sqair stands out for its potent performance and noise-efficient operation. It's the second most powerful, yet it operates at a noise level 10dB quieter than its more powerful counterpart. It is also free of ionisers, making it a safe choice for those with respiratory issues or infants/young children.

Graph 1: Comparing air purifiers under $500 by price, max noise level and cleaning power (Clean Air Delivery Rate).

Air Purifiers from $500 - $749 in New Zealand

In this range, the value offered by the SA600 from Smart Air is indisputable. Despite being the most budget-friendly option in this category, it delivers the highest cleaning power. Moreover, it does so while maintaining a pleasantly low noise level of just 53dB. Astonishingly, it outperforms many higher-priced models in cleaning power, proving that superior performance doesn't always come with a hefty price tag.

Graph 2: Comparing air purifiers from $500 - $749 by price, max noise level and cleaning power (Clean Air Delivery Rate).

Air Purifiers from $750 - $999 in New Zealand

In this category, the Blast Mini Mk II from Smart Air emerges as the champion. Despite its impressive cleaning power, it operates at a mere 49dB, making it the quietest alongside its high-performing attributes.

Graph 3: Comparing air purifiers from $750 - $999 by price, max noise level and cleaning power (Clean Air Delivery Rate).

Air Purifiers from $1000+ in New Zealand

In the premium range, largely targeted at commercial applications, the Blast Mk II from Smart Air outshines others. Among the 14 models analysed, this purifier offers the best cleaning efficiency while being the quietest. Despite its powerful performance, it is the second cheapest option.

Graph 4: Comparing air purifiers from $1000+ by price, max noise level and cleaning power (Clean Air Delivery Rate).


Our meticulous analysis underscores a pivotal truth - a higher price tag doesn’t equate to better cleaning power. Smart Air purifiers have proven to be formidable contenders across various price brackets, offering a blend of powerful, efficient, and quiet air purification solutions. Whether you’re on the hunt for the best air purifier or seeking to understand how they contribute to better air quality in New Zealand, this guide sheds light on the vital factors to consider, ensuring you make an informed choice.

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