How Evaporative Cooling Ventilation Systems Work
Evaporative cooling systems are a simple, natural way to keep large spaces cool and well-ventilated.
A compact evaporative cooling unit is installed externally on the building, typically on the wall of a warehouse, workshop, or industrial facility.
Warm outside air is drawn into the system using a high-efficiency fan and passed through specially designed, water-saturated filter pads. These pads are continuously kept wet to ensure consistent cooling performance.
As the air flows through the moistened pads, heat is absorbed by the water and naturally evaporates. This process removes heat from the air, resulting in a noticeable drop in temperature.
Once cooled, a powerful fan distributes the fresh, cool, and lightly humidified air throughout the building, helping maintain a comfortable and productive indoor environment.
To complete the system, high-level extraction fans remove hot, stale air from inside the space, helping to maintain continuous air movement.
Why Choose OKEL for Evaporative Cooling Ventilation Systems?
At OKEL, we specialise in delivering energy-efficient cooling solutions that help businesses reduce running costs while improving workplace comfort. Our evaporative cooling ventilation systems offer a simple, highly effective way to cool large open environments such as warehouses, factories, and open-plan offices.
100% Fresh Air Ventilation: Unlike traditional air conditioning, evaporative cooling systems supply continuous 100% fresh air into your workspace. This helps improve air quality while reducing the build-up of stale, recycled air.
Work with Doors and Windows Open: Evaporative cooling performs best in naturally ventilated environments, meaning it can operate effectively with doors and windows open. This makes it ideal for busy warehouses and facilities where goods and materials are constantly moving in and out.
Highly Energy-Efficient: Designed for low running costs, evaporative cooling systems use less than 10% of the electricity required by conventional air conditioning, making them one of the most cost-effective cooling solutions available.
Excellent Performance in Hot Conditions: Evaporative cooling systems are most effective during hot weather. The greater the difference between outdoor and indoor temperatures, the stronger the cooling effect, delivering consistent comfort even in peak summer conditions.
Our Evaporative Cooling Ventilation System Installation Process
On-Site Consultation
One of our expert engineers will visit your site to perform a free survey and discuss your unique requirements to find the right evaporative cooling ventilation system for you.
Bespoke Design
Based on our survey and your property’s needs, we’ll provide a custom design for an energy-efficient, cost-effective cooling system.
Pre-Installation Planning
Before installation begins, we perform detailed risk assessments and schedule the installation to minimise disruption as much as possible.
Installation
Our team of fully accredited and highly experienced engineers deliver a safe, reliable and streamlined installation.
Handover and Sign-Off
We provide training on your new cooling system and ensure everything is working to your satisfaction.
Ongoing Aftercare
We offer full warranty protection as well as an annual maintenance service to keep your cooling system in top condition.
Frequently Asked Questions
- How much does an evaporative cooling ventilation system cost?
The cost of an evaporative cooling system depends on the size of the space, the number of cooling units required, and the complexity of the installation.
Following a free on-site survey, our team will assess your requirements and provide a tailored, no-obligation quotation.
- How long does it take to install an evaporative cooling ventilation system?
Installation time varies depending on the scale of the system required. In most cases, installation can be completed within a single afternoon to a few days.
After your free site survey, we will confirm a clear installation timeline as part of your quotation.
- Do windows and doors need to stay closed for it to work?
No. Unlike traditional air conditioning systems, evaporative cooling does not require sealed doors or windows.
In fact, the system works best with natural airflow, so it is recommended to leave doors or windows open where possible to allow warm air to naturally exit the building.
- Does my evaporative cooling ventilation system operate in very hot weather?
Yes. Evaporative cooling systems are designed to perform at their best during high temperatures.
The hotter and drier the external air, the more effective the cooling process becomes, delivering strong and consistent temperature reduction.
- How often does my evaporative cooling ventilation system need servicing?
We recommend servicing your evaporative cooling system twice per year to keep it operating at peak efficiency.
This typically includes a spring service to prepare the system for warmer months, and a winter drain-down and inspection to protect the unit during colder periods and ensure it remains in good condition.
Regular maintenance helps maintain performance, improve reliability, and extend the lifespan of the system.
- Do evaporative cooling systems use refrigerant gases?
No. Evaporative cooling systems do not rely on refrigerant gases, making them a more environmentally friendly alternative to traditional air conditioning.
They use a natural water-based cooling process, reducing environmental impact while maintaining efficient temperature control.