Air to water heat pump & DHW Supply

Air-to-water heat pumps efficiently transfer heat from the outside air to water, which can be used for space heating and cooling. With the ability to operate in temperatures as low as -25°C, these pumps are a reliable solution for year-round indoor comfort.

Air-to-Water Solutions for Year-Round Comfort with Hitachi

Hitachi offers a comprehensive range of air-to-water solutions, including both regular and high-temperature heat pumps, monobloc heat pumps which don’t require installation of indoor equipment, combi heat pumps which integrate a water storage tank, and hydro-split solutions designed especially for boiler technicians to install without needing to handle refrigerant.

Connect to existing or newly-installed under-floor heating and radiators to deliver heat, or use our range of fan coils for a year-round integrated heating and cooling solution.

Hitachi’s complete portfolio is easy to integrate, set up and maintain, and offers remote management via a smartphone app.

 

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Check the main differences and advantage

Test

  1. Uno
  2. Dos
  3. Tres
Title 1
up to 8kw
Title 2
Choice of indoor unit types including Cassette, Ducted and Floor/Ceiling convertible
Title 3
Split System consisting of one outdoor unit and one indoor unit
Title 4
Ground level, rooftop or balcony
Title 5
Small to medium commercial spaces
such as restaurants, coffee shops
small offices
mini datacenters
banks
etc.
Title 6
up to 8kw
Title 7
Choice of indoor unit types including Cassette, Ducted and Floor/Ceiling convertible
Title 8
Split System consisting of one outdoor unit and one indoor unit
Title 9
Ground level, rooftop or balcony
Title 10
Small to medium commercial spaces, such as restaurants, coffee shops, small offices, mini datacenters, banks etc.
Title 11
up to 8kw
Title 12
Choice of indoor unit types including Cassette, Ducted and Floor/Ceiling convertible
Heating & DHW_0

Superior ambient working temperature range on the market

Continued operation in the harshest of winters, supporting hot water outlet temperatures of 52°C in outdoor temperatures down to -25°C, or maintaining 60°C hot water output in conditions as low as -10°C. High-temperature heat pump models can maintain 80°C hot water output in ambient conditions down to -20°C.




  • bullet 1 (element)

  • bullet 2 (element)

  • bullet 3 (element)





  1. number 1 (element)

  2. number 2 (element)

  3. number 3 (element)

Step by Step Module

Step 1

1/3

Step 2

2/3

Step 3

3/3

Step 1

This is the first step to pair your unit
  1. 1
  2. 2
  3. 3

Step 2

This is the step 2

Step 3

The Yutaki M's wide operating temperature range copes even in extreme weather down to -25c . The system delivers heat via underfloor heating and low and high temperature radiators, and produces hot water, making it an an ideal boiler replacement.

1/3

This is a footnote

Learn about Heat Pumps & DHW

Find 2 type of systems:

  • Heating, Cooling + DHW
  • DHW Only

Heating, Cooling + DHW

Heating & DHW_2_0
Heating & DHW_2_1
1/2

Outdoor Unit

Outdoor Unit

RAS-2WHVNP - Monofásica RAS-2.5WHVNP - Monofásica RAS-3WHVNP - Monofásica RAS-4WHVNPE - Monofásica RAS-5WHVNPE - Monofásica RAS-6WHVNPE - Monofásica RAS-4WHNPE - Trifásica RAS-5WHNPE - Trifásica RAS-6WHNPE - Trifásica RAS-8WHNPE - Trifásica RAS-10WHNPE - Trifásica
Energy class rating 35°C
Power feed
Power consumption Heating 7°C ext. / 30 - 35°C water (1) kW
Cooling 7°C ext. / 30-35°C water (1) kW
Nominal capacity absorbed Heating 7°C ext. / 30 - 35°C water (max) (1) kW
Cooling 7°C ext. / 30-35°C water (1) kW
COP at 7°C ext. / 30-35°C water
EER 35 ° C / 7-12 ° C water
Noise level dB(A)
Airflow m3/h
Diameter of pipes (liquid-gas) pulgadas
Maximum length m
Maximum elevation
Operating ranges ºC (DB)
Refrigerant
Refrigerant charge (max. pipe length with no charge) kg
Compressor
Dimensions Height mm
Width mm
Depth mm
Weight kg
A+++
1 ~230 V 50Hz
0.82
1.22
14,00 (16,70)
3.8
5.25
3.12
59
2.436
1/4 - 1/2
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,40 (30)
Scroll DC Inverter
600
792
300
43
A+++
1 ~230 V 50Hz
1.25
1.59
14,00 (16,70)
5
4.8
3.15
60
2.436
1/4 - 1/2
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,50 (30)
Scroll DC Inverter
600
792
300
43
A++
1 ~230 V 50Hz
1.65
2.97
14,00 (16,70)
6
4.55
2.75
61
2.682
3/8 - 5/8
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,70 (40)
Scroll DC Inverter
600
792
300
44
A+++
1 ~230 V 50Hz
2.2
2.97
14,00 (16,70)
7.2
5
3.3
63
4.8
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,30 (60)
Scroll DC Inverter
1.380
950
370
103
A++
1 ~230 V 50Hz
2.97
2.97
14,00 (16,70)
9.5
4.71
3.22
64
5.4
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,40 (60)
Scroll DC Inverter
1.380
950
370
103
A++
1 ~230 V 50Hz
3.5
2.97
14,00 (16,70)
10.5
4.57
2.82
65
6
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
Scroll DC Inverter
1.380
950
370
103
A+++
3N ~400V 50 Hz
2.2
2.97
14,00 (16,70)
7.2
5
3.3
63
4.8
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,30 (60)
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
2.97
2.95
14,00 (16,70)
9.5
4.71
3.22
64
5.4
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,40 (60)
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
3.5
3.72
14,00 (16,70)
10.5
4.57
2.82
65
6
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
4.65
Pendiente
14,00 (16,70)
Pendiente
4.3
Pendiente
71
7.62
8/3/2001
70
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
5
Scroll DC Inverter
1.380
950
370
137
A+
3N ~400V 50 Hz
5.58
Pendiente
14,00 (16,70)
Pendiente
4.3
Pendiente
72
8.04
2/1/2001
70
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
5.3
Scroll DC Inverter
1.380
950
370
139

Outdoor Unit

Outdoor Unit

RAS-2WHVNP - Monofásica RAS-2.5WHVNP - Monofásica RAS-3WHVNP - Monofásica RAS-4WHVNPE - Monofásica RAS-5WHVNPE - Monofásica RAS-6WHVNPE - Monofásica RAS-4WHNPE - Trifásica RAS-5WHNPE - Trifásica RAS-6WHNPE - Trifásica RAS-8WHNPE - Trifásica RAS-10WHNPE - Trifásica
Energy class rating 35°C
Power feed
Power consumption Heating 7°C ext. / 30 - 35°C water (1) kW
Cooling 7°C ext. / 30-35°C water (1) kW
Nominal capacity absorbed Heating 7°C ext. / 30 - 35°C water (max) (1) kW
Cooling 7°C ext. / 30-35°C water (1) kW
COP at 7°C ext. / 30-35°C water
EER 35 ° C / 7-12 ° C water
Noise level dB(A)
Airflow m3/h
Diameter of pipes (liquid-gas) pulgadas
Maximum length m
Maximum elevation
Operating ranges ºC (DB)
Refrigerant
Refrigerant charge (max. pipe length with no charge) kg
Compressor
Dimensions Height mm
Width mm
Depth mm
Weight kg
A+++
1 ~230 V 50Hz
0.82
1.22
14,00 (16,70)
3.8
5.25
3.12
59
2.436
1/4 - 1/2
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,40 (30)
Scroll DC Inverter
600
792
300
43
A+++
1 ~230 V 50Hz
1.25
1.59
14,00 (16,70)
5
4.8
3.15
60
2.436
1/4 - 1/2
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,50 (30)
Scroll DC Inverter
600
792
300
43
A++
1 ~230 V 50Hz
1.65
2.97
14,00 (16,70)
6
4.55
2.75
61
2.682
3/8 - 5/8
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,70 (40)
Scroll DC Inverter
600
792
300
44
A+++
1 ~230 V 50Hz
2.2
2.97
14,00 (16,70)
7.2
5
3.3
63
4.8
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,30 (60)
Scroll DC Inverter
1.380
950
370
103
A++
1 ~230 V 50Hz
2.97
2.97
14,00 (16,70)
9.5
4.71
3.22
64
5.4
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,40 (60)
Scroll DC Inverter
1.380
950
370
103
A++
1 ~230 V 50Hz
3.5
2.97
14,00 (16,70)
10.5
4.57
2.82
65
6
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
Scroll DC Inverter
1.380
950
370
103
A+++
3N ~400V 50 Hz
2.2
2.97
14,00 (16,70)
7.2
5
3.3
63
4.8
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,30 (60)
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
2.97
2.95
14,00 (16,70)
9.5
4.71
3.22
64
5.4
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,40 (60)
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
3.5
3.72
14,00 (16,70)
10.5
4.57
2.82
65
6
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
4.65
Pendiente
14,00 (16,70)
Pendiente
4.3
Pendiente
71
7.62
8/3/2001
70
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
5
Scroll DC Inverter
1.380
950
370
137
A+
3N ~400V 50 Hz
5.58
Pendiente
14,00 (16,70)
Pendiente
4.3
Pendiente
72
8.04
2/1/2001
70
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
5.3
Scroll DC Inverter
1.380
950
370
139
Heating & DHW_2

Image + Text

Text text

Domestic Hot Water Only

GIF PROOF

Heating & DHW_2

Outdoor Unit

Outdoor Unit

RAS-2WHVNP - Monofásica RAS-2.5WHVNP - Monofásica RAS-3WHVNP - Monofásica RAS-4WHVNPE - Monofásica RAS-5WHVNPE - Monofásica RAS-6WHVNPE - Monofásica RAS-4WHNPE - Trifásica RAS-5WHNPE - Trifásica RAS-6WHNPE - Trifásica RAS-8WHNPE - Trifásica RAS-10WHNPE - Trifásica
Energy class rating 35°C
Power feed
Power consumption Heating 7°C ext. / 30 - 35°C water (1) kW
Cooling 7°C ext. / 30-35°C water (1) kW
Nominal capacity absorbed Heating 7°C ext. / 30 - 35°C water (max) (1) kW
Cooling 7°C ext. / 30-35°C water (1) kW
COP at 7°C ext. / 30-35°C water
EER 35 ° C / 7-12 ° C water
Noise level dB(A)
Airflow m3/h
Diameter of pipes (liquid-gas) pulgadas
Maximum length m
Maximum elevation
Operating ranges ºC (DB)
Refrigerant
Refrigerant charge (max. pipe length with no charge) kg
Compressor
Dimensions Height mm
Width mm
Depth mm
Weight kg
A+++
1 ~230 V 50Hz
0.82
1.22
14,00 (16,70)
3.8
5.25
3.12
59
2.436
1/4 - 1/2
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,40 (30)
Scroll DC Inverter
600
792
300
43
A+++
1 ~230 V 50Hz
1.25
1.59
14,00 (16,70)
5
4.8
3.15
60
2.436
1/4 - 1/2
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,50 (30)
Scroll DC Inverter
600
792
300
43
A++
1 ~230 V 50Hz
1.65
2.97
14,00 (16,70)
6
4.55
2.75
61
2.682
3/8 - 5/8
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,70 (40)
Scroll DC Inverter
600
792
300
44
A+++
1 ~230 V 50Hz
2.2
2.97
14,00 (16,70)
7.2
5
3.3
63
4.8
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,30 (60)
Scroll DC Inverter
1.380
950
370
103
A++
1 ~230 V 50Hz
2.97
2.97
14,00 (16,70)
9.5
4.71
3.22
64
5.4
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,40 (60)
Scroll DC Inverter
1.380
950
370
103
A++
1 ~230 V 50Hz
3.5
2.97
14,00 (16,70)
10.5
4.57
2.82
65
6
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
Scroll DC Inverter
1.380
950
370
103
A+++
3N ~400V 50 Hz
2.2
2.97
14,00 (16,70)
7.2
5
3.3
63
4.8
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,30 (60)
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
2.97
2.95
14,00 (16,70)
9.5
4.71
3.22
64
5.4
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,40 (60)
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
3.5
3.72
14,00 (16,70)
10.5
4.57
2.82
65
6
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
4.65
Pendiente
14,00 (16,70)
Pendiente
4.3
Pendiente
71
7.62
8/3/2001
70
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
5
Scroll DC Inverter
1.380
950
370
137
A+
3N ~400V 50 Hz
5.58
Pendiente
14,00 (16,70)
Pendiente
4.3
Pendiente
72
8.04
2/1/2001
70
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
5.3
Scroll DC Inverter
1.380
950
370
139

Outdoor Unit

Outdoor Unit

RAS-2WHVNP - Monofásica RAS-2.5WHVNP - Monofásica RAS-3WHVNP - Monofásica RAS-4WHVNPE - Monofásica RAS-5WHVNPE - Monofásica RAS-6WHVNPE - Monofásica RAS-4WHNPE - Trifásica RAS-5WHNPE - Trifásica RAS-6WHNPE - Trifásica RAS-8WHNPE - Trifásica RAS-10WHNPE - Trifásica
Energy class rating 35°C
Power feed
Power consumption Heating 7°C ext. / 30 - 35°C water (1) kW
Cooling 7°C ext. / 30-35°C water (1) kW
Nominal capacity absorbed Heating 7°C ext. / 30 - 35°C water (max) (1) kW
Cooling 7°C ext. / 30-35°C water (1) kW
COP at 7°C ext. / 30-35°C water
EER 35 ° C / 7-12 ° C water
Noise level dB(A)
Airflow m3/h
Diameter of pipes (liquid-gas) pulgadas
Maximum length m
Maximum elevation
Operating ranges ºC (DB)
Refrigerant
Refrigerant charge (max. pipe length with no charge) kg
Compressor
Dimensions Height mm
Width mm
Depth mm
Weight kg
A+++
1 ~230 V 50Hz
0.82
1.22
14,00 (16,70)
3.8
5.25
3.12
59
2.436
1/4 - 1/2
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,40 (30)
Scroll DC Inverter
600
792
300
43
A+++
1 ~230 V 50Hz
1.25
1.59
14,00 (16,70)
5
4.8
3.15
60
2.436
1/4 - 1/2
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,50 (30)
Scroll DC Inverter
600
792
300
43
A++
1 ~230 V 50Hz
1.65
2.97
14,00 (16,70)
6
4.55
2.75
61
2.682
3/8 - 5/8
50
30 / 20
10 ~46 // -15 ~25 / -15 ~35
R410
1,70 (40)
Scroll DC Inverter
600
792
300
44
A+++
1 ~230 V 50Hz
2.2
2.97
14,00 (16,70)
7.2
5
3.3
63
4.8
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,30 (60)
Scroll DC Inverter
1.380
950
370
103
A++
1 ~230 V 50Hz
2.97
2.97
14,00 (16,70)
9.5
4.71
3.22
64
5.4
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,40 (60)
Scroll DC Inverter
1.380
950
370
103
A++
1 ~230 V 50Hz
3.5
2.97
14,00 (16,70)
10.5
4.57
2.82
65
6
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
Scroll DC Inverter
1.380
950
370
103
A+++
3N ~400V 50 Hz
2.2
2.97
14,00 (16,70)
7.2
5
3.3
63
4.8
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,30 (60)
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
2.97
2.95
14,00 (16,70)
9.5
4.71
3.22
64
5.4
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
3,40 (60)
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
3.5
3.72
14,00 (16,70)
10.5
4.57
2.82
65
6
3/8 - 5/8
75
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
Scroll DC Inverter
1.380
950
370
103
A++
3N ~400V 50 Hz
4.65
Pendiente
14,00 (16,70)
Pendiente
4.3
Pendiente
71
7.62
8/3/2001
70
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
5
Scroll DC Inverter
1.380
950
370
137
A+
3N ~400V 50 Hz
5.58
Pendiente
14,00 (16,70)
Pendiente
4.3
Pendiente
72
8.04
2/1/2001
70
30 / 20
10 ~46 // -25 ~25 / -25 ~35
R410
5.3
Scroll DC Inverter
1.380
950
370
139

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Heating & DHW_5

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Choose your Hitachi air-to-water heat pump solution

Frequently asked questions (FAQ):

What is an aerothermal heat pump?
Air-to-water heat pumps are a renewable, low-carbon way of heating your home. They can substantially reduce your carbon footprint as well as significantly reduce energy bills.

How does an air to water heat pump work?
A heat pump takes energy from the outside air, even at very low temperatures, and transfers it into heat that is then circulated around a heating and hot water circuit. A heat pump uses electricity to power a compressor that boosts the temperature of the water so that is hot enough to warm your home through under-floor heating or radiators as well as fulfill your hot water needs.

What are the main benefits of heating with heat pumps?

- Heat pumps extract up to 70% of their energy freely from the air meaning they only use a fraction of the electricity other systems use.
- Heat pumps are up to 500% efficient, compared to a traditional boiler that is 92% efficient, so significant energy savings are made which reduces energy bills.
- Heat pumps are a renewable energy source so are a great option for households looking to reduce their carbon footprint.
- Ideal for off-gas areas as users will see considerable running cost savings against oil boilers.
- Heat pumps don't use any fossil fuels or generate any fumes so won't affect the air quality in the local area.
- Maintenance is simple and low cost 

 

Footnotes:

[1] Air purification technologies may differ by products – see individual AC product information for further details. An air conditioner is not a replacement for any COVID control measure recommended by governments or medical professionals. Claim refers to the effect of AQtiv-Ion (optional on some models) which showed 99.9% reduction in COVID virus particles under lab conditions tested at Nara Medical University, Japan. ViroSense Z1 filter shows 99.0% effectiveness against Influenza A Virus (H3N2) tested at Japan Textile Product Quality and Technology Center using ISO18184 method. FrostWash technology also showed 99.0% reduction of virus particles on the heat exchanger tested at Kitasato Research Center of Environmental Science

[2] Air purification technologies may differ by products – see individual AC product information for further details.. Claim refers to the effect of ViroSense Z1-filter (optional on some models) which showed 99.0% reduction of Staphylococcus aureus NBRC12732 and Escherichia coli NBRC3301 bacteria particles under lab conditions tested at Nissenken Quality Evaluation Center Japan, and also FrostWash technology which showed 99.0% reduction of bacteria on the heat exchanger tested at Kitasato Research Center of Environmental Science Japan, and also AQtiv-Ion (optional on some models) which showed 99.0% reduction in E.Coli particles tested at Boken Quality Evaluation Institute Japan following JIS Z 2801 standard

[3] Air purification technologies may differ by products – see individual AC product information for further details. Claim refers to the effect of AQtiv-Ion (optional on some models) on various odors including a 90.0% reduction in formaldehyde, tested at Kinki Bunseki Center Japan

[4] Air purification technologies may differ by products – see individual AC product information for further details. Claim refers to the effect of AQtiv-Ion (optional on some models) on various allergens including House Dust Mites (98.7% reduction) tested at Viable Ltd. Following JIS-L-1920.standard, Cedar allergens (97.1% reduction), Mite allergens (79.7% reduction) and Dog allergens (94.9% reduction) all tested at the Institute of Tokyo Environmental Allergy Japan.

[5] FrostWash availability may differ by products – see individual AC product details for further information. Claim is based on 2 identical units tested for comparison; with and without FrostWash. Test chamber simulated approx. 2 years of dust and oil build up which may be experienced in a typical home environment. Airflow performance was tested before and after being in the chamber. Unit without FrostWash experienced an 18% drop in airflow performance. Unit with FrostWash experienced only 6% performance drop. Tested at Johnson Controls-Hitachi Tochigi factory, Japan Nov/Dec 2021.

[6] Compatible with Google Home and Amazon Echo

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