NET ZERO SYSTEMS & SOLUTIONS
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Integrating air purification with HVAC: a vital step towards Net Zero
Engineers should be prioritising new technologies not only as a vital part of the Net Zero equation, but in support of the fight against climate change, says Dr Chunli Cao, managing director of Oxford based air purification company, Healthy Air Technology
O
ne such area of consideration is air purification. Dr Chunli explains: “We know that HVAC accounts for 40% of a building’s energy use but reducing
emissions often compromises air quality. 26 April 2025 “What is less commonly known is that air
purification works together with traditional HVAC, to not only improve air quality but in doing so reduce the demand on these essential but hungry systems in
support of energy-efficient building design. “Incorporating air purification should, and will be, a vital part of construction, and support futureproofing against tightening environmental considerations.”
How does air purification technology complement HVAC?
Whilst an HVAC system regulates temperature and the air flow throughout a building, an air purifier handles the cleanliness of the air. Air is circulated via HVAC but the units are typically designed to capture larger particles like dust and debris, whereas a purification system will capture and destroy tiny PM2.5 particles, such as dust, pollen, mould, bacteria and viruses, and volatile organic compounds (harmful gases emitted from paints, cleaning products, or off-gassing from furniture and building materials). This reduces the strain on the HVAC and allows it to work more efficiently by focusing on temperature and humidity control. With the small particles out of the way, the HVAC
lifespan can potentially be longer, with reduced clogging and wear on filters and components, also reducing maintenance needs. The clean, purified air requires less effort from
the HVAC system, thus reducing the building’s energy consumption.
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