0800 464 7025
When the temperature inside your facility starts rising, so do the risks: overheating equipment, uncomfortable staff, and disrupted workflows. But not every cooling need requires a full-scale HVAC install. For many commercial and industrial settings, especially during temporary demand spikes or system outages, ductless air cooling is the smarter, faster solution.
At Rapid Energy, we supply a fleet of high-performance ductless evaporative coolers available for rapid rental across the UK. These compact yet powerful systems are engineered to cool large volumes of air efficiently, without the need for fixed ductwork or complex installation.
In this blog, we break down the different evaporative cooler models available, explore how they work, and help you determine which unit is right for your site.
What Are Ductless Evaporative Coolers?
Unlike traditional air conditioners, evaporative coolers don’t rely on refrigerants or sealed ducting systems. Instead, they work by drawing in warm air, passing it through a set of water-saturated filter pads, and then releasing cool, humidified air back into the space.
This process is highly energy-efficient and ideal for dry or well-ventilated environments such as:
- Warehouses and logistics depots
- Aircraft hangars and maintenance bays
- Manufacturing facilities
- Event spaces and temporary structures
- Greenhouses and agricultural buildings
The big advantage? No ductwork, no refrigerant lines, no major install. Just position the unit, fill the reservoir with water, plug into power, and it’s cooling.
Our Ductless Evaporative Coolers Range
31L Evaporative Cooler
Compact, efficient, and highly portable – ideal for focused cooling in smaller commercial spaces.
- Tank Capacity: 31 litres
- Airflow: Approx. 800-1000 m³/h
- Cooling Area: Up to ~25–30 m²
- Power Consumption: Low (under 150W)
- Mobility: Lightweight, wheels for easy movement
- Humidity Output: Moderate
- Installation: None – just fill and plug in
- Ideal Uses:
- Retail units
- Small workshops or studios
- Temporary staff areas
- Portable offices or marquees
48L Evaporative Cooler
A step up in capacity, suitable for medium-sized spaces needing reliable, low-cost cooling.
- Tank Capacity: 48 litres
- Airflow: Approx. 1800 m³/h
- Cooling Area: Up to ~57 m² indoors
- Power Consumption: 140W
- Mobility: Compact body, integrated wheels
- Humidity Output: Moderate
- Installation: None – just fill and plug in
- Ideal Uses:
- Fitness studios
- Open-plan offices
- Mezzanines or manufacturing bays
- Events or pop-up venues
60L Evaporative Cooler
Powerful airflow with high tank capacity – great for industrial settings where cooling demands fluctuate.
- Tank Capacity: 60 litres
- Airflow: 2610 m³/h
- Cooling Area: Up to 80 m² indoors / 12m air throw outdoors
- Power Consumption: 240W
- Mobility: Wheels and lockable castors
- Humidity Output: Moderate-high
- Installation: Optional continuous water connection or manual fill
- Ideal Uses:
- Light industrial spaces
- Warehouses
- Exhibition halls
- Maintenance workshops
BC341 Portable Industrial Air Cooler (1.3kW)
Our largest and most powerful ductless evaporative cooler – built for scale and industrial-grade environments.
- Tank Capacity: 200 litres
- Airflow: 30,000 m³/h
- Cooling Area: Up to 400 m²
- Power Consumption: 1.3kW
- Mobility: Heavy-duty wheels, 120kg net weight
- Humidity Output: High
- Installation: Direct water connection (½”), tank level control, UV water disinfection
- Ideal Uses:
- Aircraft hangars
- Warehouses and factories
- Agricultural production spaces
- Greenhouses or processing plants
Need Something More Targeted?
While evaporative coolers are ideal for open, well-ventilated areas, certain environments require cooling without added humidity, such as server rooms or medical storage.
For those environments, we offer split-type air conditioners that also operate without traditional ducting but they do require an internal and external unit:
- 6.7kW Split AC Units – Portable, efficient, and suitable for office or medical environments
- 15kW Split AC Units – High-capacity cooling for large modular spaces or temporary buildings
Why Rent Cooling Systems from Rapid Energy?
Whether you’re battling a heatwave, upgrading your HVAC, or preparing for peak seasonal demand, we keep you operational with…
- Expert technical guidance from the first call
- Plug-and-play or fully managed installation
- Same-day dispatch
- Nationwide coverage with 24/7 support
- Flexible rental terms to fit your operation
When you can’t afford downtime, we deliver temperature control that keeps your operation moving. For your temporary cooling solution, call us on 0800 464 7025 or email us at hire@rapidenergy.co.uk.
