Heat pump comparison: 10 split models under the microscope

Heat pump comparison: 10 split models under the microscope

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To help you to choose a heat pump model, here is a comparison of 10 of the most popular and sold split heat pump models.

The heat pump models are manufactured by 10 different heat pump brandsand their nominal heating capacity is always 8kW or 8000W (more or less 10%). This power corresponds to the need of a house of about 110m2 well insulated in a standard European climate.

Here are the different models of split air-water heat pumps with R32 or R410A that we are talking about in this comparison:

heat pump comparison
Representation of the 10 heat pump models compared

The exact models compared are shown in the table below, with their respective power ratings A7/W35, A-7/W55 and A-7/35. If some data are missing, it is because we have not found them yet.

Hot thermal power in kW
BrandModelA7/W35 (kW)A-7/W55 (kW)A-7W35 (kW)
MitsubishiEcodan Hydrobox Zubadan Silence 8 R3288
DaikinAltherma 3R Size 8 ERGA08EVH + EHBH08E6V7,56,747,28
PanasonicAquarea Performance Bibloc Generation J Mono R32977,5
ToshibaESTIA HWT-801HW-E + HWT1101XWHT6W-E87,358,11
HitachiYutaki S2.0855,8
AtlanticAlfea Extensa A.I. R32 Size 87,55,35,7
ViessmannVitocal 200-S type 201D138,610,7
De DietrichDe Dietrich Alezio S 8 MR7,975,6
BoschBosch Compress 7000AW CS7001iAW70RS + AWE 5-98,45,35,9
LGTherma V Split R32 HU091MRU44 + HNO91MRNK5999
AVERAGE8,196,586257,359

Then the comparisons were made on :

  • The temperature ranges of operation
  • The hot water start max. in °C
  • The sound power (dBA) of the group exterior mainly
  • The energy efficiencies seasonal and energy classes
  • The dimensions interior and exterior blocks
  • The weight interior and exterior blocks
  • The price

Temperature ranges and max. hot water flow Comparison of the 10 air-to-water heat pumps

TEMPERATURES
ModelOperation (T°)Max. hot water flow (°C)
Ecodan Hydrobox Zubadan Silence 8 R32-28 / 3560
Altherma 3R Size 8 ERGA08EVH + EHBH08E6V-25 / 3555
Aquarea Performance Bibloc Generation J Mono R32-20 / 3560
ESTIA HWT-801HW-E + HWT1101XWHT6W-E-25 / 4365
Yutaki S2.0-20 / 3560
Alfea Extensa A.I. R32 Size 8-20 / 3555
Vitocal 200-S type 201D13-20 / 3560
De Dietrich Alezio S 8 MR-20 / 3560
Bosch Compress 7000AW CS7001iAW70RS + AWE 5-9-20 / 3562
Therma V Split R32 HU091MRU44 + HNO91MRNK5-25 / 3565
AVERAGE60,2

Sound power in dBA: comparison of different heat pump models (outdoor + indoor unit)

Sound power level (dBA)
BrandModelOutdoor unitIndoor unit
MitsubishiEcodan Hydrobox Zubadan Silence 8 R325641
DaikinAltherma 3R Size 8 ERGA08EVH + EHBH08E6V6242
PanasonicAquarea Performance Bibloc Generation J Mono R326930
ToshibaESTIA HWT-801HW-E + HWT1101XWHT6W-E6342
HitachiYutaki S2.05737
AtlanticAlfea Extensa A.I. R32 Size 86040
ViessmannVitocal 200-S type 201D1356
De DietrichDe Dietrich Alezio S 8 MR6553
BoschBosch Compress 7000AW CS7001iAW70RS + AWE 5-947
LGTherma V Split R32 HU091MRU44 + HNO91MRNK56044
AVERAGE59,541,125

Seasonal energy efficiency: comparison of 10 heat pump models

YIELDS AND ENERGY CLASSES
BrandModelEtas 35ClassStep 55Class
MitsubishiEcodan Hydrobox Zubadan Silence 8 R32181%A+++135%A++
DaikinAltherma 3R Size 8 ERGA08EVH + EHBH08E6V179%A+++130%A++
PanasonicAquarea Performance Bibloc Generation J Mono R32193%A+++130%A++
ToshibaESTIA HWT-801HW-E + HWT1101XWHT6W-E182%A+++145%A++
HitachiYutaki S2.0177%A+++125%A++
AtlanticAlfea Extensa A.I. R32 Size 8177%A+++128%A++
ViessmannVitocal 200-S type 201D13182%A+++134%A++
De DietrichDe Dietrich Alezio S 8 MR178%A+++129%A++
BoschBosch Compress 7000AW CS7001iAW70RS + AWE 5-9203%A+++144%A++
LGTherma V Split R32 HU091MRU44 + HNO91MRNK5183%A+++126%A++
AVERAGE184%A+++133%A++

Comparison of the dimensions of the external and internal modules of the 10 heat pumps

External blockInterior block
BrandModelH(mm)L(mm)P(mm)H(mm)L(mm)P(mm)
MitsubishiEcodan Hydrobox Zubadan Silence 8 R321350950360800530360
DaikinAltherma 3R Size 8 ERGA08EVH + EHBH08E6V740884388840440390
PanasonicAquarea Performance Bibloc Generation J Mono R328651283320892500340
ToshibaESTIA HWT-801HW-E + HWT1101XWHT6W-E10501010370725450235
HitachiYutaki S2.0629799300712450285
AtlanticAlfea Extensa A.I. R32 Size 8716907349847448477
ViessmannVitocal 200-S type 201D1313771109546880450370
De DietrichDe Dietrich Alezio S 8 MR943950330679400410
BoschBosch Compress 7000AW CS7001iAW70RS + AWE 5-91380930440700485386
LGTherma V Split R32 HU091MRU44 + HNO91MRNK5834950330850490315
AVERAGE988,4977,2373,3792,5464,3356,8

Heat pump weight comparison: indoor unit and outdoor unit

WEIGHT
BrandModelOutdoor unit weight (kg)Indoor unit weight (kg)
MitsubishiEcodan Hydrobox Zubadan Silence 8 R3210244
DaikinAltherma 3R Size 8 ERGA08EVH + EHBH08E6V58,542
PanasonicAquarea Performance Bibloc Generation J Mono R326142
ToshibaESTIA HWT-801HW-E + HWT1101XWHT6W-E7527
HitachiYutaki S2.04437
AtlanticAlfea Extensa A.I. R32 Size 84245
ViessmannVitocal 200-S type 201D1314845
De DietrichDe Dietrich Alezio S 8 MR82,235
BoschBosch Compress 7000AW CS7001iAW70RS + AWE 5-98938
LGTherma V Split R32 HU091MRU44 + HNO91MRNK56037,6
AVERAGE76,1739,26

Price comparison of the 10 heat pumps

BrandModelPrice € T.T.C
MitsubishiEcodan Hydrobox Zubadan Silence 8 R325650
DaikinAltherma 3R Size 8 ERGA08EVH + EHBH08E6V8900
PanasonicAquarea Performance Bibloc Generation J Mono R328000
ToshibaESTIA HWT-801HW-E + HWT1101XWHT6W-E5930
HitachiYutaki S2.05198
AtlanticAlfea Extensa A.I. R32 Size 86197
ViessmannVitocal 200-S type 201D1310840
De DietrichDe Dietrich Alezio S 8 MR6100
BoschBosch Compress 7000AW CS7001iAW70RS + AWE 5-98693
LGTherma V Split R32 HU091MRU44 + HNO91MRNK55500
AVERAGE7100,8

Best air-to-water heat pump in this comparison: by category

According to the criteria of comparison such as the silence of the external unit, the highest hot water flow temperature in °C, the energy efficiency or the dimensions and weight of the elements, we give you the best models.

Quietest heat pump

With 47dBA of sound power, the Bosch Compress 7000 AW is the quietest model

Highest water flow temperature hot water

In terms of hot water flow temperatures, the LG Therma V and Toshiba Estia models both provide a temperature of 65°C, which is 5°C above the average 60°C.

Best seasonal energy efficiency on paper

The Bosch Compress 7000AW is also the model with the highest seasonal energy efficiency with a value of 203% for a hot water flow at 35°C.

Smaller outer block

It is the Hitachi brand with its Yutaki S2.0 model that offers the smallest outdoor unit. Indeed, with dimensions of 629 x 799 x 300mm it is the least high, the least wide, and the thinnest.

Smaller inner block

At the level of the interior block, it is rather the Toshiba Estia which presents the least cumbersome material especially at the level of the depth which is only 235mm against 285mm for the Hitachi model then more than 300 or 400mm for all others.

Lightest outer block

Atlantic and its model Alfea Extensa AI presents the lightest outdoor unit with only 42kg against more than 100kg for some other models.

Lightest interior module

This same Toshiba Estia indoor unit is also the lightest, weighing only 27kg.

The cheapest heat pump in this comparison

Finally, on the basis of the public prices including VAT, the lowest cost heat pump at the time of writing was the Hitachi Yutaki S 2.0 model which is around 5200€. About 20 to 25% cheaper than the average. However, prices vary a lot with the seasons and the desire of different suppliers to offer special offers or clearance sales. You could for example have great opportunities to seize in terms of heat pump destocking for Black Friday

Advantages and disadvantages of the 10 heat pumps compared

ModelBenefitsDisadvantages
Ecodan Hydrobox Zubadan Silence 8 R32- Extended operating temperature range -28 / 35°C but maintain 100% heating capacity to -15°C
- Low sound power 56dBA
- Affordable price: low bracket
- One of the most bulky and heavy equipment: outdoor unit of 1,35m height and 102kg
Altherma 3R Size 8 ERGA08EVH + EHBH08E6V- External block of small dimensions, with a neat design. Lightweight and space-saving material- Higher than average sound power at the outdoor unit 62dBA
- Price 2000€ above the average public price including VAT
Aquarea Performance Bibloc Generation J Mono R32- Lower than average outer block height
- Seasonal energy efficiency at 35°C slightly above average
- Sound power 10dBA above average at the outdoor unit 69dBA
- Price 1000€ above the average public price including VAT
- Larger than average outer block
ESTIA HWT-801HW-E + HWT1101XWHT6W-E- Highest hot water flow temperature 65°C
- Thinner-than-average interior module, small footprint and very light weight
- Attractive price below the average of the 10 models
- Higher than average sound power at the outdoor unit 63dBA
Yutaki S2.0- Lower than average sound power level 57dBA
- Smallest external unit, very slim with only 300mm thickness
- Space-saving and very light equipment
- Price: the cheapest
- Seasonal energy efficiency below average, and 16% lower than the best
Alfea Extensa A.I. R32 Size 8- The lightest and most compact outdoor unit
- Price a little below average
- Seasonal energy efficiency below average, and 16% lower than the best
- Lower than average hot water output, 55°C
Vitocal 200-S type 201D13- Sound power level better than average 56dBA
- Deutsche Qualität
- Heaviest outdoor unit 142kg, and bulky
- Most expensive rate > 10k€ public price
De Dietrich Alezio S 8 MR- Heat pump that comes closest to the average of the 10 models, and represents a good compromise
- Price a little lower than average
- Sound power 5dBA higher than average
- Low average seasonal energy efficiency
Bosch Compress 7000AW CS7001iAW70RS + AWE 5-9- Quietest outdoor unit with 47dBA
- Highest seasonal energy efficiency 203% at 35°C
- Deutsche Qualität
- Outdoor unit almost the most bulky with 1.38m height.
- 20% rate above average
Therma V Split R32 HU091MRU44 + HNO91MRNK5- Highest hot water flow temperature 65°C
- Heat pump also very close to the average values, representing a good compromise as the Dietrich
- Very affordable, below average price
- Not the most beautiful

Links to the technical data of the 10 heat pump models in this comparison

Heat pump modelLink to performance data
Mitsubishi Ecodan Hydrobox Zubadan Silence 8 R32see the file
Daikin Altherma 3R Size 8 ERGA08EVH + EHBH08E6Vsee the file
Panasonic Aquarea Performance Bibloc Generation J Mono R32see the file
Toshiba ESTIA HWT-801HW-E + HWT1101XWHT6W-Esee the file
Hitachi Yutaki S2.0see the file
Atlantic Alfea Extensa A.I. R32 Size 8see the file
Viessmann Vitocal 200-S type 201D13see the file
De Dietrich Alezio S 8 MRsee the file
Bosch Compress 7000AW CS7001iAW70RS + AWE 5-9see the file
LG Therma V Split R32 HU091MRU44 + HNO91MRNK5see the file

COMPARISON OF 10 SPLIT HEAT PUMPS

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