Air Filtration & Dust Extraction Specialists UK

For optimal performance we recommend changing the air filters in your air handling unit at least every six months. Pre-filters on dusty sites often need changing every 3–6 months, while secondary bag filters usually last 6–12 months. The best guide is the pressure drop across each filter bank – we can fit gauges and offer condition-based monitoring so filters are changed when they need it, not before.

COSHH regulation 9 requires a thorough examination and test of LEV at least once every 14 months. Some processes listed in Schedule 4 of COSHH need testing more often (as often as monthly), and records of each test must be kept for at least five years. We provide LEV testing and can put your system on a regular schedule so it never lapses.

We recommend cleaning your air handling units at least every six months to maintain efficiency and hygiene – more often in high-care food areas, where the cleaning schedule should be set by your risk assessment. Coils, drip trays, filter sections and fan chambers are the main places dirt and moisture collect.

Fabric ducting (also known as air socks or textile ventilation) is air distribution ducting made from polyester material. It spreads air evenly and draught-free along its length, which suits food production, laboratories, warehouses and sports halls.