Air Source Heat Pump Water Heater

Nuos Plus Wi-Fi

The Nuos Plus Wi-Fi air source heat pump water heater is the ideal solution for energy efficient hot water requirements with renewable technology. It ensures up to 80% energy saving compared to traditional electric storage water heaters and allows for temperatures of up to 62°C with the most efficient COP of up to 3.14 in the market while boasting the shortest water heating time in its category. High-quality insulation enables hot water to be kept at the desired temperature for a long period of time, saving more money on energy bills.

 

The renewable heat pump technology used by the NUOS Plus Wi-Fi converts air into energy for domestic hot water, ensuring energy savings of up to 80% compared to traditional hot water cylinders of the same capacity.

Ariston NET is the app to manage hot water availability with an easy control, enabling energy saving for a more sustainable way of living

Once a month, the unit will automatically raise the temperature of the water stored inside it to 65°C, in order to eliminate the risk of legionella bacteria developing and keep the water healthy.

"Plug & Play" - no F-Gas qualifications needed to install the unit.

nuos plus wi fi_front2_web_1

advantages and benefits

  • A+ energy rating
  • Under 4 hour heat up time, lowest on the market*
  • Most efficient COP on the market (up to 3.14)**
  • 80% more energy savings than traditional cylinders of the same capacity
  • Optional smartphone control via Ariston NET app
  • Anti-Legionella & Anti-Freezing functions for added peace of mind
  • 'Plug & Play' – No F-Gas qualifications needed
  • R134a eco-friendly refrigerant gas
  • Super silent at 51dB in Silent Mode
  • Fully compliant with KIWA regulation & UKCA mark

 

*  NUOS Plus Wi-Fi 200D only
** NUOS Plus Wi-Fi 250I only

 
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THE FUTURE OF SMART, SUSTAINABLE COMFORT

Nuos Plus Wi-Fi heat pump water heater offers the shortest heat up times in the market, with a super efficient COP and low noise, while ensuring up to 80%* energy saving compared to traditional direct hot water cylinder.

Connecting Nuos to Aqua Ariston NET provides the ultimate control of your hot water system from the palm of your hand. Anything from simply raising the temperature to setting a weekly hot water schedule can be easily managed via the app, and in-depth energy consumption reports help maximise your savings.

Nuos Plus Wi-Fi
discover its features
  • THE FUTURE OF SMART, SUSTAINABLE COMFORT

    As the world’s leading manufacturer of water heating equipment, Ariston continues to show its commitment to helping homeowners reduce their carbon footprint through continuously researching and developing innovative and eco-friendly products. Ariston’s commitment to innovation is evident in the Nuos Plus Wi-Fi, the air source heat pump water heater that offers the perfect alternative to electric hot water storage cylinders and is an economical solution even for properties off the gas grid.

  • UNPARALLELED ENERGY EFFICIENCY AND COMFORT

    The renewable heat pump technology used by Nuos converts heat from the air into energy for domestic hot water, ensuring up to 80% energy saving compared to traditional electric storage water heaters. The modulating power provided by the Inverter Technology and the electronic expansion valve installed in the refrigerant circuit allow to reach a temperature of up to 62°C with short heating-up time and low noise. For added efficiency, Nuos can be conveniently coupled with a boiler. Moreover, all models boast an energy class A+.

  • HIGHLY EFFICIENT INSULATION

    All models in the range are highly durable and easy to use. High-quality insulation enables hot water to be kept at the desired temperature for a long period of time, saving money on energy bills.

  • ABSOLUTE SAFETY

    The unit's Anti-Freezing function keeps the water at a minimum temperature of 5°C even when the unit is turned off as frozen water can damage the water heater severely in cold areas. The built-in Anti-Legionella function automatically raises the temperature of the water stored inside the unit to 62°C once a month, in order to eliminate the risk of legionella bacteria developing and keep the water healthy.

  • HOME GETS SMARTER, LIFE GETS SIMPLER

    Ariston NET is the smart app to manage your comfort that offers you easy control and prompt assistance, enabling energy saving for a more sustainable way of living

Nuos Plus Wi-Fi
discover its features

THE FUTURE OF SMART, SUSTAINABLE COMFORT

As the world’s leading manufacturer of water heating equipment, Ariston continues to show its commitment to helping homeowners reduce their carbon footprint through continuously researching and developing innovative and eco-friendly products. Ariston’s commitment to innovation is evident in the Nuos Plus Wi-Fi, the air source heat pump water heater that offers the perfect alternative to electric hot water storage cylinders and is an economical solution even for properties off the gas grid.

UNPARALLELED ENERGY EFFICIENCY AND COMFORT

The renewable heat pump technology used by Nuos converts heat from the air into energy for domestic hot water, ensuring up to 80% energy saving compared to traditional electric storage water heaters. The modulating power provided by the Inverter Technology and the electronic expansion valve installed in the refrigerant circuit allow to reach a temperature of up to 62°C with short heating-up time and low noise. For added efficiency, Nuos can be conveniently coupled with a boiler. Moreover, all models boast an energy class A+.

HIGHLY EFFICIENT INSULATION

All models in the range are highly durable and easy to use. High-quality insulation enables hot water to be kept at the desired temperature for a long period of time, saving money on energy bills.

ABSOLUTE SAFETY

The unit's Anti-Freezing function keeps the water at a minimum temperature of 5°C even when the unit is turned off as frozen water can damage the water heater severely in cold areas. The built-in Anti-Legionella function automatically raises the temperature of the water stored inside the unit to 62°C once a month, in order to eliminate the risk of legionella bacteria developing and keep the water healthy.

HOME GETS SMARTER, LIFE GETS SIMPLER

Ariston NET is the smart app to manage your comfort that offers you easy control and prompt assistance, enabling energy saving for a more sustainable way of living

Technical data

200D

250I

Technical Specification

Nominal storage tank capacity

200 L

245 L

COP

3.10

3.14

Heating time (h:min)

03:59

5:24

Energy Class

A+

A+

Tapping Profile

L

XL

Min/max air temperature

-10/42 °C

-10/42 °C

Max water temp heat pump only mode/with HE

62/75 °C

62/75 °C

Minimum temperature of storage tank room

1 °C

1 °C

Sound power level

55 dB(A)

55 db(A)

Sound power level (silent mode)

51 dB(A)

51db(A)

Max operating pressure

6 bar

6 bar

Voltage / Max power consumption

220-240 V /2500

220-240 V 2500 W

Heating element power

1500+1000 W

1500+1000 W

Max electrical power consumption in heat pump mode

900 W

900 W

Electrical system protection grade

IPX4

IPX4

Standard airflow rate (automatic modulating control)

650 m³/hr

650 m³/hr

Min volume of the installation room

30 m³

30 m³

Empty weight

90 kg

115 kg

Insulation thickness

50 mm

50 mm

Heat exchanger surface area

-

0.65 m²

Heat dispersion (PES)

21 W

23 W

Available static pressure

230 Pa

230 Pa

Annual electricity consumption (average clima)

790 kWh/year

1,299 Kwh/year

Seasonal efficiency (ηwh)

130%

129%

Mixed water at 40°C

256 L

333 L

Software support period end date

16/08/2026

16/08/2026

F-Gas Data
Product Code
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Nuos Plus Wi-Fi
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Technical data

200D

250I

Technical Specification

Nominal storage tank capacity

200 L

245 L

COP

3.10

3.14

Heating time (h:min)

03:59

5:24

Energy Class

A+

A+

Tapping Profile

L

XL

Min/max air temperature

-10/42 °C

-10/42 °C

Max water temp heat pump only mode/with HE

62/75 °C

62/75 °C

Minimum temperature of storage tank room

1 °C

1 °C

Sound power level

55 dB(A)

55 db(A)

Sound power level (silent mode)

51 dB(A)

51db(A)

Max operating pressure

6 bar

6 bar

Voltage / Max power consumption

220-240 V /2500

220-240 V 2500 W

Heating element power

1500+1000 W

1500+1000 W

Max electrical power consumption in heat pump mode

900 W

900 W

Electrical system protection grade

IPX4

IPX4

Standard airflow rate (automatic modulating control)

650 m³/hr

650 m³/hr

Min volume of the installation room

30 m³

30 m³

Empty weight

90 kg

115 kg

Insulation thickness

50 mm

50 mm

Heat exchanger surface area

-

0.65 m²

Heat dispersion (PES)

21 W

23 W

Available static pressure

230 Pa

230 Pa

Annual electricity consumption (average clima)

790 kWh/year

1,299 Kwh/year

Seasonal efficiency (ηwh)

130%

129%

Mixed water at 40°C

256 L

333 L

Software support period end date

16/08/2026

16/08/2026

F-Gas Data
Product Code
more information nuos plus wi fi_front2_web_1
Nuos Plus Wi-Fi
Message
Email
Phone

I accept the privacy's information

Gives consent

Having read the Privacy Policy above, aware that my consent is purely optional, as well as revocable at any time, I give my consent to the processing of my data for the Company to send promotional / commercial communications and to carry out marketing activities in the manner and in accordance with the provisions of the Privacy Policy. privacy's information

Gives consent
denies consent