Clean Air Movement
Are fresh air supply units necessary if I have air conditioning?
Last Updated: 9 September 2025Yes, fresh air supply units are necessary even if you have air conditioning. Air conditioning mainly controls temperature and humidity but does not introduce outdoor air. Without fresh air, pollutants and carbon dioxide build up indoors, reducing air quality and increasing health risks. Ventilation ensures clean, breathable air. Why Air Conditioning Alone Is Not Enough...
Are Fresh Air Supply Units Necessary If Windows and Doors Can Be Opened for Ventilation?
Last Updated: 9 September 2025Yes, fresh air supply units are essential even if windows and doors can be opened for ventilation. While natural ventilation can provide airflow, it is inconsistent, energy-inefficient, and often insufficient to maintain optimal indoor air quality. Mechanical ventilation systems ensure continuous, controlled airflow, filtering pollutants and maintaining humidity levels, which is particularly crucial in the...
How can I test my CO2 levels at home?
Last Updated: 23 September 2025You can accurately test your home’s CO₂ levels by using a dedicated indoor air quality monitor that employs non-dispersive infrared (NDIR) sensor technology, placing it at head height away from people and draughts, and interpreting the readings in parts per million (ppm) against UK health and building ventilation guidelines. Understanding CO₂ and Its Significance in...
How to Check CO2 Levels in Your Home
Last Updated: 27 November 2025To check CO₂ levels in your home, use a reliable indoor air quality monitor like the VENTI PICO, which measures CO₂, humidity, and temperature. Place the device at head height away from windows or vents, and aim to maintain CO₂ concentrations below 800 ppm for optimal air quality. Regularly ventilate high-occupancy rooms and consider installing mechanical ventilation systems for long-term...
What Causes Condensation?
Last Updated: 25 September 2025Condensation occurs when warm, moist air cools and transforms into liquid water. This process is particularly prevalent in the UK due to its cool and humid climate, leading to issues like damp and mould in homes. Key factors include temperature differences, humidity levels, building insulation, and human activities that generate moisture. Understanding Condensation Condensation is...
What Health Issues Can Poor Ventilation Cause?
Last Updated: 28 August 2025Poor ventilation can lead to a range of health issues, including respiratory problems, allergies, and asthma exacerbations. In the UK, damp and mould caused by inadequate airflow are particularly prevalent, contributing to conditions like bronchitis and sinus infections. Additionally, poor ventilation can increase indoor air pollution, leading to headaches, fatigue, and long-term cardiovascular issues. The...
What is Clean Air?
Last Updated: 3 September 2025Clean air in the United Kingdom is fundamentally defined by the absence of harmful pollutants at levels that pose a risk to human health, wildlife, vegetation, or cultural heritage. This standard is quantified by specific thresholds for particulate matter (like PM10 at 40 µg/m³ annually and PM2.5 at 25 µg/m³ annually) and key gases such...
What is the ideal relative humidity (RH) in our homes?
Last Updated: 21 October 2025The ideal Relative Humidity (RH) for a healthy, comfortable UK home generally sits between 40% and 60%. Maintaining this range prevents health issues, reduces the spread of airborne viruses, and crucially, minimises the risk of condensation and damaging mould growth on cold surfaces. Air Wars: Why Your Home Needs a Humidity ‘Sweet Spot’ Right, let’s...
What is the relationship between CO2 levels and cognitive performance?
Last Updated: 27 November 2025Research has shown that elevated levels of carbon dioxide (CO2) can negatively impact cognitive performance. In the UK, studies reveal that reducing CO2 concentrations from 5000 ppm to 1000 ppm improves cognitive abilities by up to 15% in tasks like word recognition and reaction time. Enhanced ventilation is key to maintaining optimal CO2 levels for...
What Role Does Ventilation Play in Indoor Health?
Last Updated: 28 August 2025Proper ventilation is essential for maintaining indoor air quality, reducing pollutants, and preventing damp and mould. In the UK, where homes are often tightly sealed for energy efficiency, effective ventilation systems like MVHR (Mechanical Ventilation with Heat Recovery) ensure a continuous supply of fresh air while retaining heat. This helps reduce health risks associated with...