In the UK, the Big+Quiet Formaldehyde in Prussian Blue and Nickel is priced at £879.99. But – there’s a second, more wallet-friendly option. A simplified nickel and white model with an airflow fixed at 50o is available for £699.99. Better yet, it’s currently on sale as part of Dyson’s Winter Event for £499.99. See it on the Dyson website.
What features does the Big+Quiet Formaldehyde have?
The Big+Quiet has been designed to provide air purification for larger rooms, which are typically not served by standard air purifiers. But the problem that this creates is that a larger size and more airflow means a lot more noise.
To combat the unwanted sound, Dyson engineers have incorporated a lot of noise-minimising solutions into the purifier. For a start, the engine is soft mounted to reduce vibrations.
There’s also a uniquely designed labyrinth seal that forces the expelled air around a twisting channel to prevent it from building up too much noisy force.
Finally, there’s an acoustic silencer built into the purifier. It’s a cavity inside the appliance that’s shaped to capture and dissipate low frequency noise.
The Big+Quiet’s design has a lot more in common with the older Pure Cool Me, than with any of Dyson’s bladeless loop fans. It’s a large cylindrical appliance with a cup-shaped section on top.
Its distinctive shape is what helps to direct the condensed jet of air that can be projected outwards for 10 metres. The airflow can’t be pointed in just any direction but the user can choose from three angles: 0o, 25o or 50o.
It’s also worth bearing in mind that this is not a hybrid appliance that also heats, cools or humidifies a room. It’s simply an air purifier. That being said, it does have a “breeze mode”, which creates a natural-seeming breeze.
According to Dyson, this randomised airflow is proven to be more refreshing than a consistent air current, so it can be used similarly to a fan. And, since this is Dyson, engineers spent three years collecting over 40 million data points to help create the mode – so, it should be a bit better than the annoying ‘natural’ mode on a standard fan.
The Big+Quiet is the first of Dyson’s air purifiers to feature a CO2 sensor. It also monitors and filters out of the air the full range of particles and gases that you’d expect, including formaldehyde.
In the MyDyson app, you’ll be able to monitor PM 2.5 and PM10 particle pollution, as well as gases in the air, temperature and humidity.
The machine has HEPA 13 filtration that will capture 99.95% of particle pollutants down to 0.1 microns. The filter itself will last for five years, which means less expense in replacements.
There’s also a new K-Carbon filter to capture NO2 (nitrogen dioxide, which might pollute your home air from nearby roads or even from cooking). The formaldehyde filter is solid state, so it won’t become less efficient over time, or need replacing. And as the machine is fully sealed, any air that passes through it will be cleaned.