With a split-unit heat pump, the outdoor unit can stay a lot more compact and lighter than with a monoblock. Useful if there are space constraints, for example. However, an indoor unit is additionally required because not all components are located in the outdoor unit. These are 5 hybrid and all-electric air-to-water heat pumps.
Itho Daalderop HP-S
The air/water heat pumps in the HP-S series from Itho Daalderop can be used for heating, cooling and possibly hot tap water. The HP-S uses refrigerant R-410a and is available with capacities of 6.5 kW, 9.5 kW and 12 kW. These are designated HP-S 55, HP-S 95 and HP-S 130, with additional BI-UNIT or BU-UNIT in the product name to distinguish between indoor and matching outdoor units.
The compact HP-S 55 and HP-S 95 have one fan. The HP-S 130 has a larger evaporator and two fans placed one above the other. The split units can be used both hybrid and all-electric. For an all-electric setup, a matching 200 and 300 liter storage tank has been developed for hot tap water. To bring and maintain this domestic hot water to temperature, the heat pump requires about two hours per 24-hour period at low speed.
Look here for more information about the Itho Daaldrop HP-S
Intergas Xtend
The Xtend is a hybrid 5 kW air/water heat pump from Intergas. It comes standard with an external open manifold and can be combined with virtually all common high-efficiency boilers. The indoor unit or Hybrid Heatpump Control Unit is remarkably small and therefore takes up very little space.
For the user, it's good to know that the Xtend can be controlled remotely thanks to the Intergas Gateway, the Comfort Touch thermostat and the Comfort Touch app that you install on a smartphone. As an installer, you can, among other things, diagnose remotely, change parameters and see an overview of possible malfunctions.
Scan the QR code on the indoor unit to go through the adjustment process. The refrigerant used is R-32 and the outdoor unit can be placed at fine further away from the facade. Prefer an all-electric air/water heat pump? Then you end up with the 7kW Intergas Xource.
Look here for more information about the Intergas Xtend
Remeha Mercuria Ace
A compact air/water heat pump available in hybrid and all-electric versions and with a capacity of 4.5 kW, 6 kW, or 8 kW in single phase. It uses refrigerant R-32. The system operates up to an outside temperature of -20 degrees Celsius. Should additional power be required at very low temperatures, additional heating can be provided electrically or, in the hybrid version, through the central heating boiler. Note that there are both split-unit and monoblock versions of the Remeha Mercuria Ace.
In addition to heating, the Mercuria Ace can also be used for cooling. The heat pump can be combined with an external free-standing or suspended boiler tank for supplying hot tap water. For installers, it is good to know that the heat pump has the new Ace platform (eSmart Inside operating system). Via Bluetooth and the Smart Start app on your smartphone, you connect wirelessly to go through all the installation steps that get the heat pump up and running.
Look here for more information about the Remeha Mercuria Ace
ATAG Energion S
Whereas the Energion M from ATAG are monoblocks, the heat pumps in the ATAG Energion S series are split units that use refrigerant R-32. The output is about 4, 5, or 8 kW, depending on the model. If you see Hybrid in the model name, this tells you that it is a hybrid heat pump. In principle, it can work with any boiler, although you can also choose a combination set that already includes an ATAG boiler. The indoor unit of this heat pump is mounted on the wall.
If instead of Hybrid you come across the designation Compact in the model name, then you know it is an all-electric heat pump. It has a floor-standing indoor unit with an integrated 180-liter boiler. Alternatively, you can substitute Compact for Plus. In that case, there is a compact wall-mounted indoor unit and a separate floor-standing boiler of your choice of about 190 or 280 liters. Several variations and combinations are possible within Hybrid, Compact, and Plus.
Look here for more information about the ATAG Energion S hybrid split and the all electric plit
LG Therma V Split
The outdoor unit of the Therma V Split air-to-water heat pump can be connected either to an indoor unit with integrated water tank, or to an indoor unit to which an external water tank is connected. Furthermore, the piping can be up to fifty meters long, allowing a lot of freedom in terms of placement of the outdoor unit and the indoor unit.
Depending on the version, capacities range from about 4 kW to 9 kW, while models are also available with higher capacities from 12 kW to 16 kW. Most versions use refrigerant R-32, there is a variant that uses R-410a and one that uses both R-410a and R-134a.
Then there is a hydrosplit version, where there are no refrigerant lines running through the home or building, which is the LG Therma V Hydrosplit. In short, there is a variant of this split-unit heat pump for almost every conceivable application.
Look here for more information about the Therma V Split and the hydrosplit variant
Vaillant aroTHERM pure
This compact split unit combines well with a boiler of your choice. With a floor area of about half a square meter, this is currently even Vaillant's smallest air/water heat pump. Instead of a hybrid version, all-electric is of course also possible. So that the aroTHERM pure can cool, heat and provide hot tap water.
Capacity ranges from 4 to 10 kW. The indoor unit can be installed with or without a backup heater needed to switch to all-electric (now or in the future). When installed including a backup heater, Vaillant refers to it as an all-electric ready hybrid setup.
For an all-electric installation, combine the indoor unit with a uniTOWER pure hydraulic tower, which has a 190-liter hot water cylinder. Alternatively, the aroTHERM pure can be combined with a uniSTOR hot water cylinder that can even supply up to 500 liters of hot tap water.
Click here for more information on aroTHERM pure
Bosch Compress 3400i
This heat pump is available in hybrid and all-electric versions, namely the Compress 3400i Hybrid and the Compress 3400i All-electric. Suitable for heating, cooling and possibly providing hot tap water. Seven different outputs are available, ranging from 4 kW to 14 kW. Refrigerant R-32 is used for the 230V version and R-410a for the 400V version.
To get an all-electric version, you combine the wall-mounted indoor unit with a separate boiler. What you can also do is choose a slightly different variant of this air-to-water heat pump, namely the Compress 3400i Tower All-electric. In this case, the indoor unit is already equipped with an integrated 190-liter water tank. Regardless of the variant chosen, users can easily control the system via the Bosch HomeCom Easy app on a smartphone.
Look here for more information on the Compress 3400i hybrid, the Compress 3400i all electric and the Compress 3400 all electric tower
