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Our range of water source heat pumps are designed to reduce the carbon footprint of a property whilst helping to maintain a consistent temperature control and to manage energy bills more effectively. Browse our products and you’ll see that we can offer assistance with the installation and maintenance of renewable energy heating systems for a broad range of for commercial, agriculture, residential, manufacturing and industrial projects.



These heat pumps are bespoke to each and every installation so that we optimise the size of the heat exchangers for the flow and temperatures at both the evaporators and condensers. Using r600a or CO2, we’ll select the refrigerant based on the temperature profiles, for the lowest climate impact with GWPs of 3 and 1 respectively. Available up to 400KW in a single unit for r600a, larger for CO2, which keeps the hydrocarbon gas charge at a manageable level they can be multiplexed together for higher duties.

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To give our heat pumps customers complete peace of mind. Following installation, commissioning and a 6 month run-in period the actual performance will be assessed against predicted performance. If the heat pump does not meet the guaranteed performance we will refund the cost of the heat pump and remove it from site.


A water source heat pump is a renewable energy source that provides a genuine alternative to your traditional heating systems in both home and commercial properties. It absorbs energy from surrounding water through a submerged network of pipes. Any property that is located close to a large water source could benefit from water source heat pumps. The energy is absorbed from water sources such as lakes, rivers, ponds, aquifers, and more. The same unit as our ground source heat pump is used for this, but the way the heat is collected and the heat source itself, are of course, different. As we all look for ways in which we can reduce our carbon footprint and take control of our energy bills, our range of heat pumps are the perfect example of a cost-effective, efficient alternative.

Water Heat Pump


Our water source heat pump services are extensive, providing full support for our customers at every stage of the journey. Our energy-efficient heating systems uses the very highest standards of manufacturing and design, we offer expert advice and installation on site, alongside on-going maintenance to ensure a long and effective life cycle for your heat pump. Our ethos is to be a market leader in the UK for green energy. With different water source pumps available within our range, we are in a position to help businesses and homes to significantly reduce their carbon footprint with cost-effective alternatives to the traditional fossil-fuel powered heating systems.


Our water source heat pump designs are created for maximum energy efficiency and consistent performance for all sizes of property.


Professional installation of your water source heat pump by our expert installers ensures minimal disruption to your property.


Our extensive repair and maintenance service is important to keep your water source heat pump fully functioning at all times.


As water source heat pumps manufacturers and suppliers, we use the highest quality of materials and expert engineering to produce and supply heat pumps that are effective for the long-term.


Our support services include commissioning engineer attendance, 24/7 service engineering support and access to Clade’s technical helpdesk during the products’ warranty period and beyond.


With its internal Research & Development team based at Clade’s Technology Hub in Leeds the company is available to advise its customers on the latest legislative changes.


There are a few good reasons why you should invest in a water source heat pump. They are highly regarded as an affordable and effective option when looking at different ways to switch to a low-carbon heating source for your building. Effective for a wide range of building types, using water as your heating source could help you to maximise the heating of your business or home whilst taking care of energy bills and reducing your carbon footprint.

To begin with, water source heat pumps provide a faster heat transfer rate when compared with a ground source heat pump, with temperatures around 5-6 degrees higher in most cases. The system is efficient, with water always close to the pipes and a constant source of energy replenishment is present with water source heat pumps. Costs are reduced up-front too, due to the lack of drilling and digging required to set up a water source heat pump.



Any large water source that is located close to a building can be used as the ideal energy source for our heat pumps. A water source heat pump can easily and effectively extract heat from the water source, transforming it into clean, renewable energy for a property close by. A water source heat pump can be used to provide heat and hot water for a property and are a viable alternative to traditional heating systems for a variety of applications and property types. You’ll find our range of water source heat pumps are used to heat businesses close to water, houses, boats, and any other type of property close to a large body of water.



A water source heat pump system works by absorbing heat energy from a large water source. This heat is taken from the surrounding water in a similar way to how ground source heat pumps extract heat from the ground. A submerged network of pipes, typically a closed loop system such as pond mats, transfer heat energy from the water to the heat pump. This is then compressed, and the temperature increased before it is delivered to the property to be used as part of the heating system (to radiators or underfloor heating) or for hot water. If the property in question is situated close to a body of water, it is a no brainer to install a cost-effective water source heat pump.

The Thermodynamic Properties of co2


There are many different types of water sources that are used effectively for water source heat pumps to be efficient. As a renewable energy source and a low-carbon option for heating homes and providing hot water, installing a water source heat pump is the perfect option. If you are close to a water source (within about 100 metres), your property is most likely a suitable location for a water heat pump. Water sources that are suitable include rivers, streams, ponds, lakes, and the sea, to name just a few. You can also find good heat sources in underground aquifers, sewers, industrial effluents, and wells. For a closed loop system, you need a body of water near your property. For an open loop system, you will require the space for two boreholes. Our expert team will assess and advise.

Mountains next to a Lake



Water source heat pumps work by extracting thermal energy from a water source close to your property and then converting the collected energy into heat and hot water. This can then be used to heat a property. Water source heat pumps require a body of water to be nearby, which makes them ideal for homeowners that have a lake, river, stream or borehole nearby.

A series of pipes are placed underground to facilitate the heating process. The system is installed into a specified water source. How it will work is dependent upon the size of the property that needs to be heated and the volume of water nearby.

Closed-loop systems effectively extract heat energy from the source by using an antifreeze liquid. Closed-loop systems are more common than open-loop systems and are better for particular property layouts. Closed-loop water heat pump systems are ideal for properties with a sufficient body of water close to the property, so long as the necessary piping can be routed underground to the water. They’re generally a cheaper option, too. This is because they’re simpler to install and don’t require the same specific conditions for installation as open-loop systems.


  • Reduces carbon emissions and CO2 impact.
  • Can heat both home and water.
  • Reliable performance throughout the year.
  • Simple to install.
  • More cost-effective than closed-loop water source heat pump systems.


Just like closed-loop systems, these water source heat pumps operate by efficiently extracting thermal from a water source close to the property which requires heating. The thermal energy is collected and converted into heat and hot water. An adequate body of water close by is required for water source heat pumps to function. This makes them ideal for homeowners who have a lake, river, stream or borehole close by.

Water flows through the pump and the heat is extracted by the open-loop system installed and then discharged back to its source. This makes them super efficient — more efficient than closed-loop pumps. However, there are additional regulations to consider from either the Environment Agency for England and Wales or the Scottish Environment Protection Agency (SEPA). You’ll need to gain consent from either of these bodies to install and use one of these systems. This is because these systems actively pull water into the system for operation, and the water needs to be clean, safe and sufficient for the system to draw and filter the water to and from the main water source.


  • More efficient than closed loop systems.
  • Ideal for projects that require simple, non-intrusive installation.
  • Works year-round, including through the Winter.
  • Can heat both home and water.
  • Low carbon source of heating.

The Heat Pump Effect

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Clade is the UKs leading manufacturer of natural refrigerant heat pumps. With significant R&D, field trials and a proven deployed portfolio of over 500 natural refrigerant appliances there are no other UK manufacturers that come close to our expertise and experience.

Operating on a national basis from our green manufacturing Technology Centre in Leeds and our Head Office in Bristol, which has achieved CEEQUAL status and the internationally recognised BREEAM Excellent standard, we design, manufacture, supply and maintain heat pumps and refrigeration around the world.


“Over the past year TRIOS and Clade Engineering Solutions have worked closely together in delivering service to a range of retail and non-retail customers. Clade has proven to be a reliable partner and demonstrated its ability to react quickly and efficiently to customer requests and problems. Through system usage and great communication Clade has rapidly evolved as a partner of choice to TRIOS. The fact that Clade has both service and installation capabilities has given TRIOS confidence that we can rely on them in every situation, where our customers have a refrigeration or mechanical problem. Clade repeatedly demonstrates its customer focused credentials and continues to give great focus and service to TRIOS and our customers.”

Jeff Alden – Managing Director, Trios Group

Wm. Morrison Supermarkets Plc

“Clade have completed new installations on large stores, and refurbishment work within our main estate, and have many more planned in the future.

Their communication, efficiency and can do attitude make them a key strategic partner in our future within both M-Local and main estate. The key to their success with Morrisons is their transparency, and honesty. Nothing is hidden, and no conversations are off limits, they, as a team, are willing to bring new ideas to the table to make efficiencies, and also accept learnings from other teams to improve themselves.

I have absolutely no qualms in recommending them for any work, and hope that you consider them as the added benefit they can bring is invaluable.”

Tom Monaghan – Construction PM & Programme Manager, Wm Morrison Supermarket


“Clade have proved themselves to be a competent and diligent contractor for Marks and Spencer, their work has been delivered to a high standard with quality being the focus. Their deliver of M&S high profile stores has surpassed performance expectations. Clade has proved itself as a growing contractor with a bright future.”

Peter Garner – Marks & Spencer

CTS Shopfitting Ltd

“We have worked with Clade on numerous Co-op projects throughout many years and find them to be very professional and reliable with excellent communication both on and off site. The project management team work alongside ourselves and are very proactive when required.”

Martyn Clark – CTS Shopfitting Ltd

Key Property Solutions Ltd

“Thank you for the excellent work you did at M-Local Doncaster. It made a refreshing to change to come across a contractor who could adapt to change as speedily as yourselves and reacted pro-actively to anything that was required. I look forward to working with Clade again in the future.”

Lol Johansen – Key Property Solutions Ltd (Bowmer & Kirkland subsidiary)


“Clade Refrigeration (now Clade Engineering Solutions) has worked for The Co-operative Group for over 12 years. In this period they have delivered a large number of projects, some of these being high profile developments which have been installed to a very high standard indeed. Their willingness to help and Give support to the client, associated suppliers and the wider industry is noticeable, whilst they also take the time to give valuable feedback on new innovations and products. They have proved themselves in all instances to be a partner and a contractor that repeatedly delivers to the highest standards.”

Bill Watson – The Co-operative Group


Clade Engineering is able to provide heat pumps as either air, ground, or water source. The most suitable type of heat pump depends on several factors related to your property. Generally, air source heat pumps are the most popular because they have the fewest requirements to install. Any type of heat pump can provide hot water and heating to your building.

Heat pumps using CO2 refrigerant as the heat source are friendly to the environment because the CO2 they use stays contained within the appliance and does not get released into the atmosphere. Furthermore, the CO2 we use in our heat pumps has the lowest global warming potential (GWP) of 1 compared to 1000’s for other refrigerants which will all significantly reduce the carbon footprint of your building.

Clade are the industry leaders in heat pump technology. As the heat in buildings challenge became clearer, Clade began the R&D for a new range of heat pumps which would provide a solution for a growing market. The first heat pump was installed in a Co-Op store and achieved a staggering SCOP of 3.7. We have over 36 years of experience and all of our systems are designed and manufactured in the UK.

Our heat pumps meet environmental standards by using a natural refrigerant like CO2. It has a Global Warming Potential (GWP) of 1, which reduces both cost and emissions.

Clade offers a full start to finish heat pumps solution. Our team of engineers design your system, manufacture and supply your heat pumps from our product range, our installation team ensures your heat pump is fully functional and our after sales support team provides ongoing maintenance. You can pick and choose as many or as few of our services to suit your requirements.We ensure that your heat pump system continues to function. Our heat pumps can generate heat from 50kW to multi mega-watt, with a maximum water temperature of over 80 degrees Celsius and a minimum external air temperature of -20 degrees Celsius. Each of our heat pumps also comes with total cooling recovery to ensure a high quality of continued functionality.


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