Air Cooled Chillers – Industrial air-cooled chillers are essentially used to cool a process fluid. The chiller unit takes the heat from the process water and discharges it into the air. In some scenarios the warm air that’s discharged can be reclaimed and utilised for comfort heating during colder months. Cutting winter fuel costs quite dramatically.

Air cooled and water-cooled chillers have the same key components – an evaporator, compressor, condenser and expansion valve. The main operating difference is that one discharges heat energy into the air (air cooled), the other discharges heat into water (water cooled).


cooling tower

Aqua Group are a leading specialist in process and industrial cooling. Product range includes chillers, cooling towers, adiabatic and air blast coolers, with operating ranges -45°C to +120°C.


Aqua Hire offer an extensive range of temporary temperature control solutions, including gas, oil and dual fuel industrial boilers, process and air conditioning chillers for short-long term Hire.



Aqua Service provides complete UK aftercare support, including preventive maintenance plans, spare parts, glycol or emergency breakdowns. Nationwide engineers offering a 24/7 response.

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Our range of air cooled chillers have efficiency and reliability at their heart. As well as being highly energy efficient, they also come with reduced maintenance costs. We’re also able to offer our ranges with integrated free cooling. Further improving performance, reducing costs and extending the lifespan of the equipment itself.

Below is an overview of our main chiller models, all of which can be configured for harsh environments. Including options for aggressive or marine conditions, as well as low noise and reduced vibration options.

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Air Cooled Chiller Units

ENR Chillers – for outdoor installation, with cooling capacities from 1.6kW to 410kW. The units feature hermetic orbiting scroll compressors (from model 008) and either self-cleaning coaxial evaporators (models 003-100) or shell & tube. The range incorporates axial fans and a condenser with copper tubes and aluminium finned core. From model 061 the chillers run two compressors in parallel, further enhancing efficiency. From model 130 the chillers run two refrigeration circuits in parallel, and multiple compressors delivering continuous running.

ENRF Chillers – with integrated free cooling, cooling capacities from 23.4kW to 355kW. These chillers use the cooler ambient outdoor air as a free cooling source, resulting in either partial or total free cooling (dependent on ambient temperatures). The benefit of free cooling is significantly reduced operating costs, improved energy efficiency and less reliance on mechanical moving parts which then extends the lifespan of the equipment.

CSE Chillers – this range is designed for indoor installations, with cooling capacities from 30kW to 377kW, and incorporating centrifugal fans. These units are ideal for scenarios where the discharged warm air can be recycled and used as heating.

SBS Chillers – for installing outside, cooling capacities from 95kW to 1230kW. The units feature hermetic orbiting scroll compressors, axial fans, finned coil condensers and either brazed plate or shell & tube evaporators.

SBSF Chillers – with integrated free cooling, cooling capacities from 94kW to 1033kW. We also offer an optimised free cooling range – SBSF-OPT – which features a very low free cooling approach between leaving water temperature (LWT) and ambient temperature.

coax evaporator

Finance Solutions

Aqua Group have a range of Finance Solutions available on most temperature control units – Our lease purchase finance option is becoming increasingly popular with clients, especially those looking to protect their capital expenditure budget during economically uncertain times. It enables you to secure new temperature control equipment but without the hefty up-front investment that comes with outright purchase. With a lease agreement you pay a fixed monthly cost over an agreed time-period, after which you then own the equipment… Read More About Our Finance Options

Case Studies

Full Turnkey Solutions

Aqua’s aim is to build a life-long relationship with our customers. Becoming essentially a “one stop shop” for all your temperature control requirements, for now and the future. The three divisions of our business – Sales, Hire & Service – enable us to help clients every step of the way.

Our USP is our ability to offer clients a complete turnkey solution. We’ll work with you from initial site visit and system design to installation and commissioning. Our services include:

  • Free design consultancy, including AutoCAD drawings, 3D modelling and energy calculations
  • Mechanical and electrical installation – encompassing civil works, offloading & positioning, pipework installation, mains power and cabling, all CDM compliance, full project management and delivery
  • Aftersales support – including preventive maintenance plans to maximise product lifespan and efficiency

Our business is built on our core values of technical excellence, care, integrity and a “can do” attitude. We train all our people to be specialists in what they do – innovative engineers dedicated to providing practical, effective and efficient solutions supported by second-to-none customer service.

Depending on the working load and water temperature, we can also offer air cooled screw chillers (NOVA) and inverter driven screw chillers (ISV), with or without integrated free cooling.

For help and guidance with the best chiller design for your specific application, call our sales team today. Our engineers will help you every step of the way. From initial product selection, to final installation and commissioning.

You May Also Want To Consider

Hybrid Adiabatics

Cooling Towers

Air Blast Coolers





air cooled chillers


Why Call Aqua?

Established in 2001, Aqua Group are a market leading force in the design and supply of innovative temperature control solutions. Our team has a vast product knowledge base and years of application experience and is focused on finding the most energy efficient and price competitive solution for your specific business needs.

Whether you’re an end user looking for a bespoke cooling system design or a trade customer trying to source a single chiller unit, our specialist engineers are on hand to help. Aqua Group’s core values – Technical Excellence, Can-do Attitude, Integrity and Care – are at the heart of everything we do, and we always strive to achieve the highest level of customer service experience.

For help with product selection and technical advice call our sales team today on 0333 004 4433.