— UK Founder Launches PASSAIR — A New Framework Extending Passivhaus Thinking Into Indoor Ecology
For more than three decades, Passivhaus and high-performance building standards have transformed architecture by solving energy loss, airtightness and thermal performance.
Now, a UK founder is proposing the next evolutionary step.
Richard Greenwood today announces the launch of PASSAIR, a new framework focused on internal ecological performance in airtight buildings.
“Energy efficiency was the first revolution in building design,” says Greenwood. “Internal ecology is the next.”
PASSAIR does not challenge Passivhaus principles — it extends them.
While modern buildings have been optimised for energy retention and controlled ventilation, little attention has been given to how ultra-stable, highly controlled indoor environments influence particulate behaviour, microbial settlement patterns and long-term environmental balance.
“Air is the largest surface inside any building,” Greenwood explains. “It influences every other surface. Yet we treat it as empty space.”
PASSAIR reframes indoor air as part of a living internal system rather than simply something to move, filter or dilute.
From Energy Physics to Biological Physics
The framework introduces the concept of internal ecological dynamics — how particles move, where microflora settle, and how stability forms within airtight architectural systems.
Alongside PASSAIR, two applied components form part of the broader indoor ecological architecture:
AtmosField — a passive, architectural approach to particulate stabilisation within defined treatment zones.
Probacterial® — a correction in language and approach to microbial balance on surfaces, shifting from sterilisation toward stabilisation.
Together, they represent a move beyond sterility and toward environmental balance.
“Passivhaus solved energy performance. The next question is biological performance,” Greenwood adds.
A Shift in How We Interact With Indoor Environments
As buildings become increasingly airtight and mechanically controlled, the importance of internal ecological stability grows.
Rather than positioning this as a new category of mechanical air purification, PASSAIR proposes a reframing:
From control to balance.
From sterilisation to stabilisation.
From fighting nature to working with it.
The launch signals what Greenwood describes as “the beginning of indoor ecology as a recognised design discipline.”
For media enquiries, interviews or further information: https://vench.co.uk
LinkedIn: https://www.linkedin.com/in/richard-greenwood-92946133/
Contact Info:
Name: Richard Greenwood
Email: Send Email
Organization: PASSAIR
Website: https://passair.co.uk
Release ID: 89183929
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