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What Is NOx?

Indoor Air Quality & Filtration

We spend 70% of our time indoors and we know the quality of the air we breathe has a direct impact on our health and well-being. With new homes increasingly situated in urban areas, the impact of poor outdoor air quality can be a concern indoors, especially with ventilation systems that are bringing in air from outside, and where windows are being used.

Toxic NOx gases are formed from the combustion of fossil fuels – in London alone, up to half of the NOx emissions are caused by road transport – so, if your home is near a busy road, it is likely that some of these gases are making their way inside your home.

In brand new homes, planning conditions and Building Regulations may dictate the grade of filtration required for a MVHR system,  however in existing homes or where existing systems have been installed, you may wish to consider increasing filtration to improve indoor air quality.

Ventilation & MVHR Filtration

One key role of a MVHR Ventilation system is to filter incoming replacement air.  

Filter options range between G3 all the way to carbon filters - the higher in the scale of filters, the finer the particles they are able to trap and remove.

G3 & G4 are good for filtering out larger and coarse dust particles, M5 and F7 provide good protection against allergy triggering particles such as pollen and some pollutants and Carbon filters tackle everything with the extra filtration of pollution, emissions and NOx gases.

Ventilation & MVHR Filtration

To target NOx you need a specific filter.

The magic of Carbon Filters

For NOx filtration, an activated carbon filter will be required,  

As a porous material, made from coconut shells, coal and wood, the high porosity and large surface area allow it to capture and remove gases. The toxic pollutants are attracted to the surface of the activated carbon filter and are trapped in a process called absorption, helping maintain indoor air quality inside the home. 

The magic of Carbon Filters

MVHR with integrated nox filtration

Mitsubishi Lossnay MVHR (Heat Recovery) Range

The Mitsubishi MVHR range is designed to provide ventilation to homes and is available in a range of sizes. It is the only MVHR unit with a unique third filter slot which can house a NOx (activated carbon) filter. This provides a solution where outdoor air pollution is a concern or planning requirement. 

View Mitsubishi MVHR
MVHR with integrated nox filtration

Are you at risk of NOx pollution in your home?

Outdoor air effects indoor air and indoor air can be 5 times more polluted than outdoors!

Studies have shown associations of nitrogen dioxide (NO2) in outdoor air with adverse effects on health that can cause swelling of the tissues in the respiratory system including the throat and lungs and can reduced life expectancy.  People affected by allergies, respiratory conditions such as asthma and respiratory/lung infections are at extra risk when it comes to NOx exposure To find out more, you can find out more on the Gov website.

Where you live can increase your exposure to NOx - you can find out more about pollution levels in your area by clicking below and entering your postcode. 

How Polluted Is My Area?

What Is The UK Government Doing About NOx Emissions?

The UK government has set targets to reduce emissions of nitrogen oxides by 55% compared to emissions in 2005 by 2020 and in each subsequent year, up to and including 2029 (and by 73% compared to emissions in 2005 by 2030).
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