The quality of the air we breathe indoors has never been more important. Indoor air quality (IAQ) plays a critical role in health, comfort, and productivity. Since the COVID-19 pandemic, awareness around air hygiene has skyrocketed, especially in high-occupancy and high-pollution environments.
In this blog, we’ll explore how the right air conditioning system can actively contribute to healthier, safer environment. But first – how do we define Indoor Air Quality (IAQ)?

What is Indoor Air Quality (IAQ)?
Indoor Air Quality is the condition of the air within and around buildings and structures – especially in relation to the health and wellbeing of occupants. Poor IAQ can be caused by:
- Dust and pollen
- Volatile Organic Compounds (VOCs)
- Carbon dioxide (CO2)
- Excess moisture leading to mould and mildew
From minor issues like headaches and fatigue to more serious respiratory problems, poor air quality can have a range of negative effects, impacting employee wellbeing, customer satisfaction, and even the longevity of electronic equipment. Clean, filtered air is no longer a luxury – it’s a necessity.
How Air Conditioning Systems Improve Air Quality
1. Air filtration
Most air conditioning systems come with built-in filters that are designed to capture airborne particles like dust, pollen, smoke, and bacteria. Advanced systems, like ours here at Andrews Sykes, even feature HEPA-grade or antimicrobial filters, which are ideal for more sensitive environments like hospitals, schools, and laboratories.
By consistently removing harmful particulates, our air conditioner rentals prevent pollutants from recirculating and help maintain a cleaner, healthier indoor environment.
2. Humidity control
Although often overlooked, humidity can cause mould and mildew. Air conditioning systems help to regulate humidity levels by keeping them within the optimal 40–60% range.
For environments where moisture levels fluctuate significantly, we offer combined air conditioning and dehumidifier hire solutions, a dual-action approach that prevents condensation, damp, and other concerns associated with poor air quality.
3. Temperature regulation
Stable indoor temperatures contribute to better IAQ by reducing condensation, limiting mould growth, and preventing temperature extremes that can make airborne particle activity worse.
Our expertly maintained aircon hire units deliver precise temperature control to support a comfortable and health-conscious atmosphere in any settings.
4. Ventilation support
Stale air is a breeding ground for bacteria and odours. By drawing in fresh air and expelling pollutants, air conditioning systems help to maintain airflow and reduce stagnant air.
For larger commercial or industrial spaces, we also provide specialist ventilation hire solutions to ensure that even complex or high-occupancy environments benefit from clean and consistent air circulation.
Healthier Spaces Begin with Better Air
Air conditioning is a vital component of a healthy indoor environment. By filtering our pollutants, controlling humidity, improving airflow, and maintaining stable temperatures, AC systems can have an incredibly profound impact on air quality.
Whether you work in an office, hospital, warehouse, or events space, our air conditioning hire solutions can help improve your entire environment.
Call 0800 211 611 or enquire online to arrange a free site survey or speak with one of our climate control specialists. You can also find your nearest depot here.