All-in-one domestic hot water heat pump | Series S floor-standing – Bexie Energy
All-in-one air source heat pump for domestic hot water with integrated tank. Available in 200L and 300L for floor-standing installation. Harnesses the energy from the outside air and generates up to 4 times more heat than an electric water heater with the same energy consumption, reducing bills and CO₂ emissions.
Overview
Bexie Energy’s Series S all-in-one domestic hot water heat pump is a compact air source solution that integrates the heat pump and the DHW tank into a single unit. Designed for floor-standing installation, it combines maximum energy efficiency with simple installation and minimal space requirements.
Unlike conventional boilers and electric water heaters, this heat pump harnesses the thermal energy from the outside air to produce hot water, generating up to 4 times more heat per kWh consumed. This translates into savings of up to 75% on hot water bills and a significant reduction in CO₂ emissions.
Technical specifications of the all-in-one domestic hot water heat pump
- Type: all-in-one air source heat pump (integrated tank)
- Use: domestic hot water (DHW)
- Installation: floor-standing
- 200L capacity: 560mm (ø) x 1750mm (H)
- 300L capacity: 650mm (ø) x 1920mm (H)
- Efficiency: COP up to 4 — 4 times more efficient than an electric water heater
- Energy source: outside air (air source)
Advantages of the all-in-one heat pump over an electric water heater
- Up to 4 times more efficient than a conventional electric water heater
- Savings of up to 75% on hot water bills
- No gas consumption — 100% electric and compatible with solar power
- Significant reduction in CO₂ emissions
- Integrated tank — no need for an external storage tank
- Compact floor-standing installation with no complex works
Advantages over a gas boiler
- No dependence on the price of natural gas or LPG
- No direct CO₂ emissions at the point of use
- Eligible for the UK Boiler Upgrade Scheme and other clean heat incentives
- No need for a gas installation or mandatory annual inspections
- Greater safety — no risk of gas leaks
Applications of the DHW heat pump
- Detached homes without a gas installation
- Replacement of electric water heaters or conventional storage heaters
- New-build installations with energy rating A certification
- Apartments and homes with limited space
- Integration with photovoltaic installations for maximum savings
- Residential communities with shared solar production
How air source heat pumps work for hot water
The heat pump extracts the thermal energy contained in the outside air — even at sub-zero temperatures — and transfers it to the water in the tank through a refrigeration circuit. This process consumes very little electricity compared with the thermal energy it generates, which explains its high coefficient of performance (COP).
In combination with solar PV panels, the cost of producing hot water can be reduced to virtually zero during peak solar irradiation hours.
Series S floor-standing vs the wall-mounted version
The Series S is designed for floor-standing installation, making it particularly suitable for homes with a plant room, utility room or garage. Its compact tower format integrates the entire system into a single unit with no need for external connections between the pump and the tank.
- Simpler installation as a single unit
- Greater capacity available (up to 300L)
- Ideal for installation areas with available floor space
- More accessible maintenance
Integration with the Bexie energy system
This heat pump can be combined with our solar PV panels, hybrid inverters and storage batteries to produce hot water with solar energy completely free of charge during sunlight hours. Take a look as well at our complete air source heat pump solution for heating and cooling.
Frequently asked questions about hot water heat pumps
What’s the difference between an all-in-one heat pump and a monobloc heat pump?
The all-in-one heat pump integrates the DHW tank inside the same unit. The monobloc is only the heat generation unit and requires an external tank for hot water storage. The all-in-one is more compact and easier to install.
Does it work in winter when it’s cold?
Yes, air source heat pumps can extract energy from the outside air down to temperatures of -15°C or -20°C depending on the model. Performance decreases with the cold, but it remains far superior to that of a conventional electric water heater.
How much does it save compared with an electric water heater?
With a COP of 4, every 1 kWh consumed generates 4 kWh of heat. This means savings of approximately 75% compared with a conventional resistive electric heater, depending on weather conditions and consumption profile.
Can I install it if I don’t have gas at home?
Yes, it’s the ideal solution for homes without a gas installation. It only requires an electrical connection and a drain for condensation.
Are there any grants or incentives available?
Yes, air source heat pumps can qualify for the UK Boiler Upgrade Scheme (BUS), which provides grants of up to £7,500 for replacing fossil fuel heating with low-carbon alternatives. Contact our team to find out about the incentives available in your area.
