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Why do I neeed to replace my filter?


Filters are essential to providing high levels of Indoor Air Quality within the home, the maintenance of these filters is vital to the function of any heat recovery unit.

Over time, filters will collect dirt and debris and become much less effective at removing impurities – dirty/clogged filters will also reduce the flow of fresh air into the dwelling.

Filters should be checked every 3-6 months. However, this can vary depending on the proximity of a dwelling to busy roads or other sources of pollution. Filters can be removed easily and dirt should be removed with a vacuum cleaner. It is recommended to clean a set of filters no more than twice before replacing them with new filters.

Improving the IAQ in your home could cost as little as £3.00 a month*

Different grades of filter provide different levels of filtration based on the size of particles that they remove from the airstream:

• ISO 45% (G3) Course will provide the minimum required filtration

• ISO ePM10 50% (M5) will remove smaller particles, including pollen

• ISO ePM2.5 70% (F7) provides high level of filtration, removing tiny PM2.5 particles often found in exhaust fumes

• For even higher levels of filtration, visit the Vent-Axia Pure Air Duct range

*based on replacing your filters once every year

What is MVHR?

MVHR is Mechanical Ventilation with Heat Recovery. A heat recovery unit extracts polluted, moisture-laden air from the home and replaces it with fresh, filtered outdoor air. An integral heat exchanger will take the heat from the stale extracted air and transfer it to the fresh incoming supply air. Although efficiencies vary from unit to unit, the Sentinel Kinetic Advance will deliver fresh air into a dwelling and recover 93% of the heat you would otherwise lose- dramatically reducing heat costs in the home.

How to replace your filter:

To help protect health in the home, Vent-Axia has been working hard to provide ventilation solutions to improve IAQ for households. For new build homes, Vent-Axia’s Sentinel Kinetic mechanical ventilation with heat recovery (MVHR) system boasts an impressive 94% heat recovery. A vital part of an MVHR system is its filter. Inside an MVHR unit, fresh incoming air passes through a filter to remove pollen, debris and products of pollution. Filters up to ISO ePM2.5 70% (F7 grade) ensure even homes in heavily urbanised areas can filter out most impurities, up to and including PM2.5 particles, for example, diesel particulates. To ensure MVHR systems run efficiently and effectively Vent-Axia also offers ventilation servicing to maintain the systems and check and replace filters as needed. This video shows how to replace the filters on a Vent-Axia MVHR unit. 

Find the right filters for your system by visiting our filters page.