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What is a heat pump water heater?

An exhaust air heat pump water heater provides energy-efficient domestic hot water by extracting heat from the air rather than generating it directly with electricity.

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Juniper HP Plus

Heat Pump Water Heater

The Juniper HP Plus is an eco friendly indoor exhaust air heat pump water heater available in four models, with capacities ranging from 200 to 300 litres.

It efficiently transforms free energy from the outside air or waste heat from within the property into a low-cost, renewable source of domestic hot water. Each unit features a removable split top, allowing easy servicing without the need to detach the ducting.

This heat pump water heater is suitable for diverse environments such as schools, offices, gyms, residential properties, and particularly apartment buildings. Coupled with electric radiators, the Juniper HP Plus presents an efficient and cost-effective alternative to traditional heat network solutions.

5 Year Tank Warranty and 2 Year Parts Warranty with numbers 5 and 2 inside red rounded squares.Two icons with red rounded square borders: left icon labeled ErP with text 'ErP Part L Compliant', right icon labeled SG with text 'Smart Grid Ready'.

  • Left & right hand variants

  • Grade 2205L duplex stainless steel hot water cylinder

  • Advanced software for greater efficiency

  • Integrated 1.6kW back-up electric heater

  • Energy class A++

  • Touch screen controls or smartphone app

  • Automatic anti-legionella cycle

  • Flexible positioning

  • Hot water boost function

  • Micro-channel heat coil

  • Removable split top for easy servicing

  • Extract & dehumidification

  • AI learning adapts for optimal efficiency

  • Modbus connectivity

  • PV ready

  • Optional G3 unvented kit

  • NSF REG4 Certified

*Subject to Terms & Conditions

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Features in detail

User-friendly controls

The unit can be controlled locally with the large user-friendly touch screen display, or controlled remotely via WiFi using the Smart Life app.

Natural R290 refrigerant

R290 is a naturally occurring refrigerant which is found in everyday household appliances such as domestic fridge/freezers and portable air conditioners. It has an incredibly low Global Warming Potential (GWP) of just 3, and an Ozone Depletion Potential (ODP) of zero, which maintains better working parameters with heat pumps.

Higher COP

During water heating, the Juniper HP Plus can automatically calculate and analyse its current operating conditions, then adjust the power input to achieve an optimal COP. Under the standard test condition of EN16147, the water heater can achieve a COP of up to 4.09.

SAP Appendix Q

The Juniper HP Plus is listed in SAP Appendix Q, signifying its significant contribution to renewables within the SAP framework.

Removable split top

Each heat pump water heater is designed with a removable split top, making servicing and maintenance more convenient.
This feature allows easy internal access without the need to remove the ducting, reducing downtime and simplifying installation in tight spaces.

Left & Right Hand Models

While the Juniper HP Plus heat pump water heater is well-suited for stand-alone domestic properties equipped with an airing/cylinder cupboard, its design is particularly tailored for application in apartments and houses with both left and right-hand variants. The inclusion of handed front/side-mounted water connections facilitates straightforward integration with pipework affixed to an adjacent wall, ensuring symmetry in pipework installation across all properties. This feature is especially advantageous for suppliers of Prefabricated Utility Cupboards (PUCs), streamlining pipework manufacturing processes and delivering a more pleasing solution overall.

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Juniper HP Plus Split Top
Juniper HP Plus
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Technical Data
35kW
200L300L
General
DHW storage volumelitres190293
Max DHW storage temperature (without electrical heater) °C 60
Max DHW storage temperature (with electrical heater) °C 70
DHW storage temperature range (min/max) °C 10 / 70
Max DHW supply pressure (tank and secondary pipework balanced cold and hot) bar6.5
Min cold water supply pressure (tank and secondary pipework balanced cold and hot) bar1.5
DHW cylinder test pressure bar10
T&P valve pressure/temperature rating ¹bar / °C 7 / 90
Expansion vessel size/pressure litres / bar 25 / 10
DHW cylinder material Duplex stainless steel 2205L
DHW cylinder insulation material Polyurethane foam (45mm)
Outer case finish/material Powder coated steel
Standing losses kWh/day1.4881.632
Nominal air flowm3/hrSee table on page 5 of brochure
Maximum duct pressure drop at nominal air flow PaSee table on page 5 of brochure
Air supply working temperature range (min/max)°C -7 / 43
Sound pressure level @ 1 metre (EN12102) / Sound power level (EN12102)dB(A)36.0 / 50.836.4 / 51.5
Weight (empty/full)kg72 / 27287 / 387
Performance
SCOP 3.346
Tapping cycle LXL
Heat pump rated output (A7/W53) ²kW 1.251.27
Volume recovery time (A7/W53) ²hours6.49.9
COP (EN16147) (A7/W53) ²3.346
Water heating efficiency (A7/W53) ²138.9%137.2%
Energy class (EN16147) (A7/W53) ²A+
Standby power consumption (A7/W53) ³W2324
Heat pump rated output (A20/W55) ³kW1.6
Volume recovery time (A20/W55) ³hours5.18.0
COP (EN16147) (A20/W55) ³4.034.09
Water heating efficiency (A20/W55) ³165.8%167.5%
Energy class (EN16147) (A20/W55) ³A++
Standby power consumption (A20/W55) ³W1921
Mixed water at 40°C (V40)litres 271.24 382.72
Electrical
Power supplyV / Ph / Hz 220-240 / 1 / 50
Electrical heater powerkW1.6
Max power consumption (without electrical heater) kW0.6
Max power consumption (with electrical heater) kW2.2
Max current (without electrical heater) A2.61
Max current (with electrical heater) A9.41
Electric heater type/make Immersion / DJR-1500-3 1.6kW 230V 50Hz
Required fuse rating A13
Protection classIPX1
Integrated heat pump specification
Compressor brand/model/type GMCC / RDSN82V11TZE / Rotary
Compressor displacement cm³/rev8.18
Refrigerant type/charge / gR290 / 150
Fan motor type DC
Fan motor electrical consumption W56
Fan motor speed (max) RPM1680
Expansion valve type Electronic
Cylinder heat coil material/type Aluminium microchannel
1 When supplied as part of optional unvented kit | 2 DT(W) = 43°C | 3 DT(W) = 40°C
Designed, fabricated and tested in accordance with EN12897
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