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What Is an Air Source Heat Pump Cylinder?
A heat pump cylinder is designed with a larger heat exchanger surface area to transfer heat efficiently from a lower-temperature air source heat pump circuit into stored domestic hot water.
Efficient domestic hot water
Air Source Heat Pump Water Heaters
Specialist heat pump compatible water cylinders designed for efficient domestic hot water production. Improve heat transfer, support lower flow temperatures and create a future-ready hot water system.
Heat Pump Compatible
High Efficiency
Fast Recovery
Year Warranty
£
Lower Running Costs
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Renewable Technology
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Reduced Carbon Emissions
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Efficient Heat Transfer
UK
UK Based Support
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Fast Nationwide Delivery
Heat Pump Compatible Hot Water Cylinders
Clear information about the cylinder technology required to support efficient air source heat pump domestic hot water systems.
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Why Use a Purpose-Designed Cylinder?
A correctly matched cylinder can improve recovery performance, support lower flow temperatures and help the complete heat pump system operate more efficiently.
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Heat Pump Domestic Hot Water
Air source heat pumps can provide stored domestic hot water when paired with suitable controls, cylinder capacity and coil performance for the household’s demand.
Air Source Heat Pump Water Heaters
Efficient stored domestic hot water for homes, flats, apartments, offices and commercial buildings.
Air source heat pump water heaters are a highly efficient way of producing domestic hot water for homes, flats, apartments, offices and commercial buildings. Instead of using electricity purely to create heat, a heat pump water heater extracts low-grade heat from the surrounding air and transfers it into a stored hot water cylinder.
This makes an air source heat pump water heater a practical solution for customers looking for an electric, low-carbon alternative to traditional direct electric water heaters, immersion heaters, gas water heaters or oil-fired hot water systems.
How an Air Source Heat Pump Water Heater Works
An air source heat pump uses a refrigerant circuit, compressor, evaporator and condenser to move heat rather than simply generate it. Even when the air feels cool, there is still usable heat energy available.
The heat pump upgrades this energy to a higher temperature and uses it to heat stored domestic hot water for taps, showers, baths, kitchens and washrooms.
Alternative Names for Heat Pump Hot Water Systems
For domestic hot water applications, these systems may be described as air source heat pump cylinders, heat pump water heaters, domestic hot water heat pumps, hot water cylinders with heat pumps or air source heat pumps for hot water only.
They are particularly useful where a property needs efficient stored hot water but does not want, or cannot use, a gas boiler, oil boiler, LPG appliance or conventional flue system.
Why Heat Pump Water Heaters Use Less Electricity
One of the main benefits of an air source heat pump water heater is energy efficiency. A standard immersion heater is close to 100% efficient at the point of use, but it normally produces approximately one unit of heat for each unit of electricity consumed.
A heat pump water heater can often deliver more heat energy than the electrical energy it uses because much of the heat is collected from the air. This performance is commonly described using COP, or coefficient of performance.
Suitable UK Properties and Applications
These systems can be used in a wide range of UK properties, including new builds, refurbishments, off-gas homes, electrically heated flats, annexes, small commercial premises and buildings aiming to reduce reliance on fossil fuels.
Air source heat pumps are the most common type of domestic heat pump in the UK and can be suitable for many different property types when correctly selected and designed.
Typical System Components
Air source heat pump water heaters normally include a well-insulated storage cylinder, controls, temperature sensors and often an immersion heater backup. The immersion heater may be used for boost heating, pasteurisation cycles or periods of unusually high hot water demand.
Correct cylinder sizing is important because the stored water volume must match the number of occupants, bathrooms, showers, baths and typical daily hot water usage. The available heat pump output and expected recovery time must also be considered.
Compared with Direct Electric Cylinders
A heat pump water heater can reduce electrical consumption for stored hot water when compared with a direct electric unvented cylinder heated mainly by immersion elements.
Compared with Instantaneous Electric Heaters
Stored heat pump hot water can provide better comfort for regular domestic use, particularly where baths, multiple outlets or repeated shower use are required.
Compared with Gas or Oil Water Heating
The system removes on-site combustion, flues and fuel storage, creating a cleaner solution at the point of use and reducing reliance on fossil fuels.
Installation Considerations
Installation considerations include available space, airflow, noise, condensate drainage, electrical supply, hot water demand, cylinder location and whether the system is being installed as a standalone hot water solution or as part of a wider low-carbon heating strategy.
For unvented hot water systems, installation must also follow relevant UK safety requirements, including correct discharge pipework, pressure controls and competent installation.
- Available airflow and ventilation
- Condensate drainage
- Electrical supply capacity
- Noise and installation location
- Hot water demand and recovery time
- Unvented cylinder safety requirements
In Simple Terms
An air source heat pump water heater is an efficient hot water system that uses heat from the air to produce stored domestic hot water. For many UK homes and commercial properties, it offers a modern alternative to traditional electric, gas or oil water heating, combining mains pressure hot water, lower electricity consumption and reduced carbon emissions at the point of use.
Our Heat Pump Cylinder Ranges
Explore cylinder configurations for new installations, replacement projects and domestic hot water systems using air source heat pumps.
Wall Mounted ASHP Domestic Water Heaters
Compact wall-mounted air source heat pump water heaters for efficient domestic hot water production where floor space is limited.
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Residential ASHP Domestic Hot Water Heaters
Air source heat pump domestic hot water systems designed for houses, flats and other residential properties.
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Commercial ASHP Domestic Hot Water Heaters
Higher-capacity air source heat pump water heaters for commercial properties with larger or more frequent hot water demands.
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Hot Water Cylinders for Heat Pumps
Heat pump compatible hot water cylinders designed with suitable coil surface areas for efficient heat transfer and domestic hot water storage.
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