Logo for AirEx Technologies

Meet an Unreasonable Venture

AirEx Technologies

Bridging the analog and digital divide for smart ventilation control

Photo of Agnes Czako

Agnes Czako

Cofounder & CEO at AirEx Technologies

More about Agnes »
Employees 6–20
Headquarters London, England, United Kingdom
AirEx provides extremely low-cost solutions for reducing fabric heat loss, improving thermal comfort and protecting residents’ health by passive airflow control. Tens of millions of homes across Europe were built with low energy standards. Residents struggle with cold, uncomfortable draughts and high energy bills. However, the complete lack of airflow can cause damp or condensation problems. Traditional air bricks have uncontrolled airflow which allows houses to lose significant fabric heat loss - Airex replaces these with a smart alternative. The system measures the environmental conditions (such as temperature, humidity, air quality) and its cloud-based algorithms automatically regulate airflow, leading to 12-16% reduction in heat loss, resulting in 2-3 years payback. Social Landlords can access Airex free of charge (i.e. fully subsidised), thanks to its eligibility under govt schemes (£2bn/yr).

Notable Achievements

  • Over £4.5M private equity raised and £900k grant funding secured
  • 5,500 units sold commercially. Successfully recognised under the EPC (Energy Performance Certificate) that triggers £2bn/yr funding
  • Won numerous industry awards, including Business Green Technology Award, Tech Nation's Net Zero, RAEng SME Leaders, Women in Innovation

Currently Operating in One Region

Press Mentions

July 19, 2021

How to cool your home in a warming world

Read on BBC News »

February 22, 2024

Barclays Annual Report 2023

Read on Barclays »

December 1, 2023

AIREX CEO, AGNES CZAKO, NAMED UNICEF YOUNG CLIMATE INNOVATOR, IS SET TO PRESENT AIREX SMART AIR BRICK AT COP28  — Airex

Read on Airex »

November 22, 2023

Innovation30: Young Climate Innovators Shaping the Future

Read on unicefinnovate »

June 9, 2023

Investing in Impact Entrepreneurs - The Key to a Better Tomorrow

Read on Startups Magazine »

April 5, 2023

AirEx completes £1.5m second close of its funding round, securing a total of £4.1m — AirEx

Read on AirEx »

More Ventures in Energy & Environment

Get the Unreasonable Newsletter

Get monthly updates on AirEx Technologies and over 388 other ventures working to solve the world's toughest problems.

Read our Privacy Policy.