Air Source Heat Pumps | Pure Thermal

Industrial & Commercial
Air Source Heat Pumps

Capacities from 30kW to 3000kW and output temperatures up to 120°C

  • Low global warming potential (sub 650 GWP) air source heat pump specialists
  • 7 x natural refrigerant co2 & hydrocarbon air source heat pump ranges
  • Output temperatures from 35°c to 120°c plus up to 50°c inlet/outlet DT capability
  • Dual or multiple source options – air source + cooling + waste heat source
  • Ultra low noise air source heat pumps with standard 75dB(A) sound power level performance
  • F-gas phase out ready air source heat pump ranges

Industrial & Commercial Air Source Heat Pumps for retrofit, new build or process applications

The Pure Thermal team have been at the forefront of the Industrial & Commercial Air Source Heat Pump sector for over 15 years and remains committed to delivering the highest performing systems to meet the demands of each application.

Pure Thermal understand that Industrial and Commercial applications call for Air Source Heat Pumps solutions that deliver both high performance levels and flexibility in application and this is reflected in the Six Industrial & Commercial Air Source Heat Pump ranges that Pure Thermal offers.

Providing Air Source Heat Pumps on a Supply & Commission/Maintain basis the Pure Thermal approach is application based with a committed approach to providing the best advice from the initial concept through to more detailed Heat Pump Selection & Specification discussions.

Air Source Heat Pump

Pure Thermal Industrial Heat Pumps and Pure Thermal Commercial Heat Pumps are able to provide very high temperatures up to 120°C while operating with the Lowest Global Warming/Low Carbon Refrigeration Systems. Whether satisfying a retrofit application or a new project then Pure Thermal have a range of high specification Air Source Heat Pumps to exceed the application demands from 30kW to 3000kW+.

Application flexibility is key to delivering both the lowest operating costs and also the highest levels of carbon savings. Pure Thermal Air Source Heat Pumps are available in single stage (Monobloc) or Two Stage system configuration to match an application requirement.

Monbloc Pure Thermal Commercial Air Source Heat Pump units with a stage refrigeration system are able to deliver an 80°C output temperature down to a -5°C external temperature. This removes the need to specify a cascade or two stage (2 x heat pump) system for medium capacity applications.

For larger applications, the Pure Thermal PLUS SO System delivers a Two Stage Air Source Heat Pump option to 3000kW+ with single system control & operation. With PLUS SO the control of the first stage Air Source Heat Pump and the second stage Water/Water unit is completely self-contained to provide the next generation of large capacity Two Stage Air Source Heat Pump systems.

Air Source Heat Pumps

Where waste heat is available a Pure Thermal Industrial Air Source Heat Pump can operate with dual or multiple source configuration. This means that the unit will operate as an Air Source Heat Pump but importantly also has the ability to operate with a second source to provide increased levels of efficiency.

For example, an application may have a cooing requirement through the heating season, but varying in time and capacity, this means that a14°C flow is available from the chilled water return at certain times. Therefore if the external temperature is 7°C then the Pure Thermal Dual Source Heat Pump can operate using the 14°C cooling water return and not lower temperature air as its source heat which increases efficiency and hence uses less input electricity to operate.

Identifying the most appropriate system design is key to any project and to assist in this process Pure Thermal Air Source Heat Pumps can be provided with a Heat Pump Ready Verification Service which identifies the most appropriate & available system options to deliver the highest level of efficiency. At this stage, the type of Heat Pump is secondary as the focus is on providing the best advice based on the opportunity that the application presents.

Contact The Pure Thermal Team for an initial discussion and you’ll find the best advice approach that’s geared completely towards matching the demands of your project with the most appropriate solution.


Being very similar to other forms of refrigeration-based heat transfer plants, the Air Source Heat Pump is easy to relate to and understand.

In the same way that an air-cooled packaged water/glycol chiller is applied and used within many commercial/industrial applications, the air source heat pump can be applied and used in much of the same manner.

The principle of operation is covered within the general heat pump overview on the link.


When we consider Air Source Heat Pumps, we see an externally located system that is very simply taking heat from the external atmosphere. Via the process of refrigeration, the Air Source Heat Pump provides high-grade heat for use within the building, process or production/manufacturing application.

A useful point to consider is that absolute zero is -273°C on the Kelvin scale, so the operation of an Air Source Heat Pump in UK ambients is practical and attractive, in terms of both performance and ease of application.



As with other types of Heat Pumps, the output temperature of an Air Source Heat Pump can be anywhere between 30°C and 120°C, even when operating in external ambient temperatures of -10°C and below.



Pure Thermal provides a range of Air Source Heat Pumps, that can take the source heat from differing high-value areas, meaning air source collectors can be located realistically anywhere, including:

  • External
  • Internal
  • Extract ducts
  • Hot factory areas
  • Plus more…

Air source does not have to mean external ambient air!

Pure Thermal provides Air Source Flex Heat Pumps, that are able to operate with the most efficient air source available such as extract waste heat, duct-mounted recovery collector coils, and production area collectors.

If you need any more support with Pure Air Source Heat Pumps or any other Heat Pump type, get in touch with our technical team today.

Need an Urgent Quote?

Call 020 3488 4618

to discuss your next Air Source Heat Pump Project

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