Air Source Heat Pumps (ASHPs)

High efficiency air-to-water units providing renewable heating and cooling services to domestic and commercial buildings.

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Air Source Heat Pumps

Air source heat pumps (ASHPs) are an ideal solution for most project types and sizes, as they don’t require as much space and are generally easier to install than a ground or water source heat pump.


Ease of installation

ASHPs offer quick and easy installation as they only require an electrical and water supply connection. Their key consideration is to allow for air flow, making them an ideal solution for projects where space for a ground or water collector is limited.

Efficiency and range

Heat pump efficiency is measured as a Coefficient of Performance (COP). Our highly efficient ASHPs have a COP of circa 3.5+ at a water temperature of 35°C, including internal and external units, with reversible options for comfort cooling. We also offer evaporator protective coatings to extend system life-span against corrosion.

Testing and standards

GDHV have multiple heat pump factories, including in Germany, France and Ireland, with access to state-of-the-art testing facilities to provide you accurate heat pump information. Our products are tested to the latest EN standards, including EN15316, EN14511 and EN14825.

Application design

When choosing our ASHPs our application engineers will be able to offer advice on applying the solution to your project. This includes hydraulic schematic advice for single and cascaded units, alongside guidance on buffer vessels and water cylinders.

Product specification

We offer a range of three phase air source heat pumps for commercial and residential applications:

Product RangeDescriptionNominal Rating at A10/W35*ControllerMax Flow Temp
LATUHigh efficiency air to water heat pump for external applications25 -60kWWPM ECONPLUS controller

This is a BMS compatible controller via additional plug in cards, able to work with BACnet and ModBus
LITESAir to water heat pump for internal applications9 – 28kW60°C
LIASAir to water heat pump for internal applications40kW58°C
LATUR+High efficiency, reversible air to water heat pump, utilising heat recovery, for external applications60kW60°C
*A10 = air temperature 10°C / W35 = water temperature 35°C

Technical Resources

Visit our Technical Resource page to download information on a range of our products, including BIM files, spec sheets and further product and compliance information.

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We offer a range of CIBSE accredited heat pump CPDs. Topics include an introduction to heat pumps, hydronic distribution and using heat pumps to pass building regulations.

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For more information on our range of air source heat pumps and how they could benefit your project, contact us to be put in contact with your regional HVAC specialist.

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