Case studies

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April 5, 2024 – 2 Min

Zer-O-Wash laundry keeps a clean sheet on air quality

Zer-O-Wash, the first climate-neutral commercial laundry in Germany, has invested in Rensair air purification to protect its staff and improve the working environment. Linda Zoumis, owner of Zer-O-Wash, started the business in November 2021, with the main client being a … more
February 19, 2023 – 2 Min

Rensair contributes to reversal of fortune for homeless kids

HALO is a non-profit for homeless and at-risk children. Based in the State of Missouri, USA, it has facilities in Kansas City and Jefferson City and serves over 2,000 children around the world per year. … more
January 19, 2023 – 2 Min

Benesch Law prioritizes clean air to encourage return to the office   

Rensair, specialists in indoor air quality, have supplied air purification units to business law firm Benesch to encourage employees to return to the office and return to in-person collaboration following the pandemic.  … more

Industry research

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April 23, 2026 – 6 Min

Indoor Air Quality Sensors – [Updated List 2026]

What if the air in your home or office isn’t as clean as it seems? Invisible pollutants like dust, smoke, chemicals, and high CO2 levels could be affecting your health without you even noticing. Indoor air quality sensors are … more
April 7, 2026 – 5 Min

Retrofits for Net Zero – Sustainable Existing Buildings

Retrofitting existing commercial buildings is no longer optional as the UK strives to achieve ambitious net-zero targets by 2050; it has become a pressing necessity. Older buildings are often characterised by energy inefficiency, with outdated heating systems, poor ventilation, and … more
March 26, 2025 – 3 Min

Ventilation: The Key to Healthy and Efficient Buildings

Many people spend most of their lives indoors, so proper building ventilation is essential. In addition to maintaining healthy indoor air quality (IAQ) and optimising a building’s efficiency, ventilation helps remove pollutants, regulate temperature and ensures a comfortable working … more

Press & blogs

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November 2, 2026 – 6 Min

Commercial HVAC Maintenance: Which Problems Drive Up Energy Bills the Most?

Commercial HVAC maintenance helps control energy costs by addressing faults and operating settings that waste energy. Restricted airflow, poor heat transfer and equipment running beyond occupied hours can all increase consumption. The biggest source of waste varies by building. Facilities … more
November 2, 2026 – 4 Min

HVAC in India: How Climate and Occupancy Change Energy-Saving Opportunities

India’s climate shapes how much energy buildings need for heating, ventilation and air conditioning (HVAC). Hot summers, high humidity and temperatures determine  how often air conditioning runs and how hard it works. Where the savings depends on three things: … more
October 30, 2026 – 2 Min

How Salesforce cut HVAC energy 38% as a tenant, with no building works

Rensair won the CoreNet Global Innovator Award 2026 for its Tenancy project with Salesforce Tower UK … more

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