DHW heat pump wall-mounted Series E – R290, 80-120L
Wall-mounted R290 DHW heat pump with integrated tank, Series E. Available in 80, 100 and 120L. Natural R290 refrigerant with minimal environmental impact, next-generation hermetic compressor, low noise level and dual cathodic tank protection for maximum durability.
Overview
Bexie Energy’s wall-mounted R290 DHW heat pump Series E is a new-generation all-in-one heat pump solution for domestic hot water production. Available in 80, 100 and 120L, it uses natural R290 refrigerant with minimal environmental impact and delivers up to 4 times more heat per kWh consumed than a conventional electric water heater.
The wall-mounted R290 DHW heat pump Series E stands out for its advanced hermetic compressor, low noise level and dual cathodic tank protection system, making it the most efficient, durable and sustainable option for DHW production in homes and apartments.
Technical specifications of the wall-mounted R290 DHW heat pump
- Type: all-in-one air source heat pump (integrated tank)
- Installation: wall-mounted
- Refrigerant: R290 (natural propane, GWP = 3)
- 80L capacity: 522 x 548 x 1206 mm
- 100L capacity: 522 x 548 x 1366 mm
- 120L capacity: 522 x 548 x 1526 mm
- Efficiency: COP up to 4 — 4 times more efficient than an electric water heater
Advantages of R290 refrigerant in DHW heat pumps
R290 refrigerant (propane) is a natural gas with a global warming potential (GWP) of just 3, compared with a GWP of 675 for R32 or 1430 for R134a. The wall-mounted R290 DHW heat pump Series E is therefore the most environmentally friendly option in the Bexie catalogue.
In addition, R290 offers excellent thermodynamic properties that contribute to the high efficiency of the system, particularly under low outdoor temperature conditions. More information on natural refrigerants is available from the Energy Saving Trust.
Next-generation hermetic compressor
- Advanced hermetic design for maximum efficiency and reliability
- Low noise and vibration levels — ideal for living spaces
- Compact design that reduces the overall dimensions of the unit
- Sophisticated control adapting to different usage conditions
- Multiple built-in protections against overload and overtemperature
Enamelled tank with dual cathodic protection
The tank of the wall-mounted R290 DHW heat pump Series E is made of steel with an enamel coating validated for 160,000 pressure cycles and protected by a dual cathodic protection system:
- Magnesium anode: standard passive protection against internal corrosion
- Impressed current anode (optional): active protection for high-hardness water
- Longer tank lifespan compared with conventional electric water heaters
- Certified enamel quality control
Advantages over conventional electric water heaters
- The wall-mounted R290 DHW heat pump is up to 4 times more efficient than an electric water heater
- Savings of up to 75% on hot water bills
- R290 refrigerant with a GWP of just 3 — minimal environmental impact
- No direct CO₂ emissions at the point of use
- Compatible with solar power for virtually zero running costs
- Eligible for the UK Boiler Upgrade Scheme and other clean heat incentives
Applications
- Apartments and homes with 1 to 4 occupants
- Replacement of electric water heaters in retrofit projects
- Installations where noise level is a critical factor
- Projects with strict environmental sustainability criteria
- Homes with high-hardness water that require enhanced cathodic protection
- Installations combined with solar PV panels
Differences between Series E and Series S
- Series E (this model): R290 refrigerant, advanced hermetic compressor, dual cathodic protection, 80-120L
- Series S: capacities up to 300L, standard technology — greater volume at lower cost
Take a look as well at the Series S wall-mounted or the complete air source heat pump solution for heating, cooling and DHW.
Integration with the Bexie energy system
The wall-mounted R290 DHW heat pump Series E can be combined with our solar PV panels and hybrid inverters to produce hot water with solar power at virtually zero cost during peak generation hours.
Frequently asked questions about the wall-mounted R290 DHW heat pump
Why choose a wall-mounted R290 DHW heat pump over an R32 one?
R290 has a GWP of just 3, compared with 675 for R32. This means that in the event of an accidental leak, the environmental impact is 225 times lower. In addition, R290 offers better thermodynamic performance under low-temperature conditions, which translates into greater efficiency in winter.
What capacity do I need?
The 80L model is suitable for 1-2 people. The 100L covers the needs of 2-3 people. The 120L is ideal for 3-4 people. For larger households, check the Series S with up to 300L.
Is it noisy?
No. The advanced hermetic compressor design and R290 refrigerant deliver very low noise levels, suitable for installation in a kitchen, bathroom or hallway without disturbance.
How much can I save compared with an electric water heater?
With a COP of 4, every 1 kWh consumed generates 4 kWh of heat. This translates into savings of approximately 75% on hot water bills compared with a conventional resistive electric heater.
Is it eligible for incentives?
Yes, this unit may qualify for the UK Boiler Upgrade Scheme (BUS), which provides grants for replacing fossil fuel heating with low-carbon alternatives. The use of R290 may also unlock additional incentives based on sustainability criteria. Contact our team for guidance on the schemes available in your area.
